Rockford Fosgate Punch Power 50.1, 50.2 car audio amplifier Installation & Operation Manual

50.

1

power

50.

2

power

® c a r a u d i o for

competition Power amplifiers

Operation & Installation

new chrome heatsink

f a n a t i c s

®

®

Dear Customer,

Congratulations on your purchase of the world's finest brand of car audio amplifiers. At Rockford Fosgate we are fanatics about musical reproduction at its best, and we are pleased you chose our product. Through years of engineering expertise, hand craftsmanship and critical testing procedures, we have created a wide range of products that reproduce music with all the clarity and richness you deserve.

For maximum performance we recommend you have your new Rockford Fosgate product installed by an

Authorized Rockford Fosgate Dealer, as we provide specialized training through Rockford Technical Training

Institute (RTTI). Please read your warranty and retain your receipt and original carton for possible future use.

Great product and competent installations are only a piece of the puzzle when it comes to your system. Make sure that your installer is using 100% authentic installation accessories from Connecting Punch in your installation. Connecting Punch has everything from RCA cables and speaker wire to Power line and battery connectors. Insist on it! After all, your new system deserves nothing but the best.

To add the finishing touch to your new fanatic image order your Rockford Fosgate wearables, which include everything from T-shirts and jackets to hats and sunglasses.

To get a free brochure on Rockford Fosgate products and Rockford wearables, please call 602-967-3565 or FAX

602-967-8132. For International orders, FAX +001-1-602-967-8132 or call +001-1-602-967-3565.

PRACTICE SAFE SOUND™

C

ONTINUOUS EXPOSURE TO SOUND PRESSURE LEVELS OVER

100dB

MAY CAUSE PERMANENT HEARING LOSS

.

H

IGH POWERED AUTOSOUND SYSTEMS MAY PRODUCE SOUND PRESSURE LEVELS WELL OVER

130dB. U

SE

COMMON SENSE AND PRACTICE SAFE SOUND

.

If, after reading your manual, you still have questions regarding this product, we recommend that you see your Rockford Fosgate dealer. If you need further assistance, you can call us direct at 1-800-669-9899. Be sure to have your serial number, model number and date of purchase available when you call.

The serial number can be found on the outside of the box. Please record it in the space provided below as your permanent record.

This will serve as verification of your factory warranty and may become useful in recovering your amplifier if it is ever stolen.

Serial Number: _____________________________________________

Model Number: ____________________________________________

T

ABLE OF

C

ONTENTS

Introduction ................................................................................................................................................................ 1

Punch Accessory Pack ................................................................................................................................................. 1

Technical Design Features ............................................................................................................................................. 2

50.

2

Design Features ................................................................................................................................................... 5

50.

1

Design Features ................................................................................................................................................... 7

Installation Considerations ............................................................................................................................................ 9

Mounting Locations .................................................................................................................................................... 10

Battery and Charging ................................................................................................................................................. 10

Wiring the System ...................................................................................................................................................... 11

Using Passive Crossovers ............................................................................................................................................ 12

Table of Crossover Component Values .......................................................................................................................... 13

Using the XCard ......................................................................................................................................................... 14

Customizing the XCard ............................................................................................................................................... 14

XCard Resistor Chart ................................................................................................................................................... 15

50.

2

Installation ........................................................................................................................................................ 16

Using the 50.

2

Signal Switching Network ...................................................................................................................... 19

Using the 50.

2

Balanced Line Inputs ............................................................................................................................ 24

50.

1

Installation ........................................................................................................................................................ 26

Using the 50.

1

Signal Switching Network ...................................................................................................................... 31

System Diagrams ....................................................................................................................................................... 34

Rockford Fosgate Accessories ...................................................................................................................................... 38

Troubleshooting ......................................................................................................................................................... 40

Autosound 2000’s Quick Check for Troubleshooting ....................................................................................................... 43

50.

2

Specifications ..................................................................................................................................................... 46

50.

1

Specifications .................................................................................................................................................... 47

Warranty Information ................................................................................................................................................. 48

International Information ............................................................................................................................................. 49

G

E T T I N G

S

T A R T E D

Welcome to Rockford Fosgate! This manual is designed to provide information for the owner, salesperson and installer. For those of you who want quick information on how to install this product please turn to the Installation section of this manual or refer to the icons listed below. Other information can be located by using the Table of Contents. We, at Rockford Fosgate, have worked very hard to make sure all the information in this manual is current. But, as we are constantly finding new ways to improve our product, this information is subject to change without notice.

n c e d a d v a a t i o n

O p e r

Sections marked

ADVANCED

OPERATION

include in-depth technical information

A

L

L

A

I

N

S

T

T

I

O

N

Sections marked

INSTALLATION

include “slam dunk” wiring connections

TROUBLE- S

H

O

O

T

I

N

G

Sections marked

TROUBLESHOOTING

include recommendations for curing installation problems

I

NTRODUCTION TO

50 S

ERIES

Rockford Fosgate is distinguished as the global leader in building high performance amplifiers. Since the introduction of the

250m

2

and 250m, new performance standards were set for sound quality and flexibility and have risen to an even higher level with the introduction of the 50.2 and 50.1 “competition” amplifiers. The “50 series” utilize similar technologies of their predecessors like trans• nova, TOPAZ and DIAMOND; however, they have enhanced power supplies for driving very low impedances.

The 50.2 is a two-channel amplifier which is optimized to drive 1

Ω

stereo and 2

Ω

bridged loads. The 50.1 is a single

channel amplifier optimized to drive a 1

Ω

(single amp) or a 2

Ω

bridged load (pair of amps bridged to a single load).

The “50 series” use Rockford's innovative technologies for awesome sound quality, reliable performance and high output power into low impedances. This can be beneficial for serious competition vehicles.

P

U N C H

A

MPLIFIER

A

C C E S S O RY

P

A CK

The accessory pack shipped with the “50 series” Power amplifiers include the mounting hardware necessary to secure the amplifier to the vehicle and to attach the end caps to the amplifier.

Punch Power 50.2

Installation & Operation Manual

Punch Verification Certificate

(4) Amplifier mounting screws (#8 x

3

⁄

4

" phillips)

(8) Speaker & power connector screws (3/32" allen)

(4) End cap mounting screws (9/64" allen)

(1) Allen wrench 3/32"

(1) Allen wrench 9/64"

Punch Power 50.1

Installation & Operation Manual

Punch Verification Certificate

(4) Amplifier mounting screws (#8 x

3

⁄

4

" phillips)

(6) Speaker & power connector screws (3/32" allen)

(4) End cap mounting screws (9/64" allen)

(1) Allen wrench 3/32"

(1) Allen wrench 9/64"

– 1 –

T

ECHNICAL

D

ESIGN

F

EATURES

Many of the solutions to common design problems encountered by Rockford Fosgate engineers created entire new circuit designs as well as new ways to construct the Punch 50.

2 and 50.

1

Power Amplifiers. In our flagship amplifiers, no expense was spared in design and construction from the unique circuitry design to the manufacturing process that has proven to be the industry reference for many years. Described below are just some of the accomplishments achieved by our engineering and manufacturing staff.

◆ trans•nova

(TRANSconductance NOdal Voltage Amplifier)

The trans•nova (TRANS conductance NOdal Voltage Amplifier) is a patented circuit (U.S. Patent 4,467,288) that allows the audio signal to pass through the amplifier at low voltage. Each amplifier channel utilizes its own “fully floating” power supply and is configured to increase power gain. The increase in power gain allows the drive stage to operate at a lower voltage. A low voltage drive stage is the same principle used in high quality preamplifiers to produce high linearity and wide bandwidth.

E-I I-E

trans•nova circuitry

The resulting design utilizes an output stage with a simpler gain structure and a shorter total signal path than conventional high voltage (bi-polar) designs. The number of stages is reduced from five or more to three. The output stage is further refined into a trans-impedance stage (current to voltage converter) to achieve a short loop (fast) negative feedback. The output stage is driven cooperatively by a transconductance stage (voltage to current converter).

THE RESULT: Superior sound quality, greater efficiency and higher reliability.

◆ DIAMOND

(Dynamically Invariant AMPlification Optimized Nodal Drive)

DIAMOND (Dynamically Invariant AMplification Optimized Nodal Drive - patent pending) is an important advance in circuit design which reduces high frequency distortion. Amplifiers which utilize a large array of output MOSFETs cause a high capacitive load on the driver stage. This load can make the high frequencies sound harsh. The DIAMOND circuit eliminates high frequency distortion by allowing the driver to operate with 20dB or more of current headroom, whereas traditional drivers have only 6dB of current headroom.

THE RESULT: Lower distortion and greater inherent stability.

◆ TOPAZ

(Tracking Operation Pre-Amplifier Zone)

The TOPAZ (Tracking Operation Pre-Amplifier Zone) circuitry solves ground loop noise problems common to automotive amplifier design. This innovative new development allows vastly improved isolation of the input signal grounds from the power supply ground of the amplifier. This is accomplished by allowing the source unit to control the potential “environment” of the entire input structure or “zone” of the amplifier. This process improves the noise rejection of the amplifier by 30-40dB

– an astounding 20-100 times better than amplifiers without TOPAZ.

THE RESULT: Elimination of troublesome ground loop noise between source and amplifier.

– 2 –

◆ DSM

(Discrete Surface Mount Technology)

The DSM (Discrete Surface Mount) manufacturing process combines the advantages of both discrete components and integrated circuitry. Rockford Fosgate is the only American amplifier manufacturer to have invested millions into this process.

DSM components differ from conventional discrete components in different ways. They are more compact, more rugged, and they efficiently dissipate generated heat. Using them wherever appropriate allows the advantages associated with discrete circuitry to be retained while also providing room for both highly advanced processing features and generous PC board copper paths where needed. Their short lead-out structures allow maximum audio performance and highest signal-to-noise ratios to be obtained in amplifiers of desirable package size without resorting to “amplifier-on-a-chip” shortcuts. These advantages are shown below in Figure 1.

Figure 1

PC Board

Thru-Hole

Solder

Component

Solder

PC Board

Surface Mount

THE RESULT: Less connections, improved reliability, shorter signal paths, superior signal-to-noise ratio and awesome sonic performance.

◆ XCard

(Internal Crossover)

The Power amplifiers utilize internal active crossovers. These crossovers have many performance advantages such as using discrete components for exact frequency adjustments which are far superior to potentiometers. Additionally, the XCard can be configured for high-pass, low-pass and full range operation. With slight modification, many crossover frequencies and slope configurations can be achieved.

THE RESULT: Increased system design flexibility with a precise electronic crossover without the limitations of conventional potentiometer designs.

◆ Stereo Pass-Thru

The Pass-Thru output provides a convenient source for daisy-chaining an additional amplifier without the need for extra RCA cables or “Y” adapters. The 50.

1

Pass-Thru provides constant Full Range stereo output. The 50.

2

has the ability to provide constant Full Range stereo output as well as distribute one of its internal XCards to the Pass-Thru for a dedicated High-Pass or Low-Pass output.

THE RESULT: Convenient signal level output for adding extra amplifiers.

– 3 –

◆ Balanced Line Inputs (50.

2

)

Using the Balanced Line Inputs provides the last word in achievable rejection of noise induced in the cable between the source and the amplifier. The differential input circuitry (Figure 2) used in the balanced input system rejects whatever signals are common to both of the shielded, twisted-pair conductors. Balanced line is universal in concert installations where the stage and mixing consoles are hundreds of feet apart. Long signal cables and electrically-noisy environments make signal integrity and noise rejection an extremely difficult challenge.

THE RESULT: Quiet transmission of audio from source to amplifier.

Figure 2

Center

Conductor

RCA Input

Differential

Input

Outer

Shield

Differential inputs only amplify the difference between two conductors.

Note: the noise spikes appear on both the center conductor and the outer shield and therefore are not amplified.

◆ NOMAD

(NOn-Multiplying Advanced Decision)

The Power amplifiers use an analog computer process to absolutely maximize safe output power under all operating conditions. The innovative NOMAD (NOn-Multiplying Advanced Decision) system is the most sophisticated version of this technique ever used, bringing previously unavailable levels of accuracy, stability, temperature immunity and reliability to this critical process. NOMAD makes advanced decisions based on device voltages to precisely control the awesome levels of current available in the output MOSFETs to safe values – but only when absolutely needed.

THE RESULT: Extremely fast protection system that always protects the amplifier and never degrades the sound.

◆ MOSFET Devices

(Metal Oxide Semiconductor Field Effect Transistor)

Rockford Fosgate is one of the few manufacturers in any of the sound communities to utilize MOSFET devices in both the power

supply and the output stages. MOSFET (Metal Oxide Semiconductor Field Effect Transistor) devices offer several important inherent advantages over the 30 year old technology of bi-polar design. These advantages include: thermal stability, switching speed, ultra low output impedance and wider bandwidth linearity. In addition, MOSFET and vacuum tubes share many important operating characteristics. However, the MOSFET device is much faster, wider in bandwidth, measurably lower in distortion and far more linear than vacuum tubes.

THE RESULT: Operational characteristics of vacuum tubes without the performance limitations of tube design.

◆ ITS

(Increased Thermal Stability)

The ITS (Increased Thermal Stability) Power Supply design is new in Rockford Fosgate amplifiers. A major problem associated with any amplifier design is how to get rid of the heat generated by its circuitry. Clearly, it is highly desirable to minimize the amount of heat generated in the first place. The “50 series” Power amplifiers employ a new toroidal power transformer design in which the high current input leads are carried directly to the switching power MOSFETs. This both minimizes PC board heating and takes advantage of natural air cooling of these leads.

THE RESULT: Maximizes power supply efficiency by eliminating unnecessary heat generation.

– 4 –

50.

2

D

E S I G N

F

E AT U R E S

1.

Cast Aluminum Chrome Heatsink – The cast aluminum heatsink of the Punch Power amplifier dissipates heat generated by the amplifier's circuitry. The inherent advantage of casting provides a 30% improvement of cooling over conventional extrusion heatsink designs.

2.

End Caps – The unique end caps conceal the wiring and input cables, giving the amplifier a clean “stealth” look.

3 13 8 6 7 12 3

Speaker

+ L –

0

°

-180

°

Unbal.

Bal.

Gain

L (Mono)

Pass-

Thru

L

R

R

Bal.

Input

EZ - 180

°

- 0

°

Bridged

Gain

Speaker

+ R –

10 9

10

Power

16

REM

Dual B+

Dual GND

5 4 4

3.

Speaker Terminals – The heavy duty, gold-plated terminal block connectors (+ and –) will accept wire sizes from

8 AWG to 18 AWG. These gold-plated connectors are immune to corrosion that can cause signal deterioration.

4.

Power Terminals – The dual power and ground connectors on the Punch Power amplifier are gold-plated and will accommodate up to two 8 AWG wires maximizing the input current capability of the amplifier.

5.

REM Terminal – This gold-plated spade terminal is used for the AP (auto power) or remote turn-on of the Punch 50.

2

Power amplifier.

6.

RCA Input Jacks – The industry standard RCA jack provides an easy connection for signal level input. They are goldplated to resist the signal degradation caused by corrosion.

7.

Balanced Line Input– This input will allow the balanced inputs to be used in conjunction with the Punch 50.

2

Power amplifier to provide better noise rejection.

8.

Signal Input Switch – This switch allows selection of either the RCA or Balanced Line inputs.

9.

RCA Pass-Thru Jacks – The Pass-Thru provides a convenient source for daisychaining an additional amplifier. This eliminates the need for additional RCA cables or “Y” adapters. One of the internal crossovers can be designated to the Pass Thru output creating a dedicated low-pass, high-pass, or full range output.

– 5 –

10.

Input Sensitivity Controls – The input level controls are preset to match the output of most source units. They can be adjusted to match output levels from a variety of source units.

11.

Internal Crossovers – These built-in crossover cards are configurable for a multitude of operating frequencies. The orientation of the card in its socket determines its function of high-pass, low-pass or full range operation.

12.

E-Z Bridge Switch / 0

°

-180

°

Phase Switch – This dual purpose switch enables you to E-Z bridge the amplifier or invert the signal phase of the right channel.

13.

Phase Switch – This switch enables you to easily invert the phase of the left channel without having to disconnect the speaker wires.

14.

Crossover Switching – These internal switches allow the crossover to be distributed to the amplifier and Pass-Thru in many different configurations.

15.

Audiophile Bypass – One of the crossover switching configurations allows the internal crossover circuit to be bypassed, maintaining Audiophile sound quality due to a shorter signal path.

16.

LED Power Indicator – The LED gives a visual indication of the status of the amplifier, lighting when the unit is turned on.

Amplifier

XCard Options

Pass Thru

XCard 2

XCard 1

W

50.

2

E

R

A M P L I F I E R

P

O

25 Watts X 2 into 4 Ohms with less than 0.05% THD + N from 20-20kHz

50 Watts X 2 into 2 Ohms with less than 0.10% THD + N from 20-20kHz

®

®

ROCKFORD CORPORA

TION

MADE IN THE USA

Amplifier

XCard 1

Amplifier

XCard 2

11

XCard 2

Not Used

XCard 1

XCard 2

Audiophile Bypass

Pass Thru

Not Used

Amp Only

XCard 2

XCard 1

XCard 1

High-Pass

LP

14

&

15

Low-Pass

HP

Full Range

FULL

– 6 –

50.

1

D

E S I G N

F

E AT U R E S

1.

Cast Aluminum Chrome Heatsink – The cast aluminum heatsink of the Punch Power amplifier dissipates heat generated by the amplifier's circuitry. The inherent advantage of casting provides a 30% improvement of cooling over conventional extrusion heatsink designs.

2.

End Caps – The unique end caps conceal the wiring and input cables, giving the amplifier a clean “stealth” look.

6 9 13 7

12 11

Speaker

+ L –

L (Mono)

L Pass-Thru

R

Gain

R Pass-Thru

Power

L + R / L

(Mono)

X-Over

24dB/12dB/0dB

0

°

-180

°

3 8

REM

Dual B+

Dual GND

5 4 4

3.

Speaker Terminals – The heavy duty, gold-plated terminal block connectors (+ and –) will accept wire sizes from

8 AWG to 18 AWG. These gold-plated connectors are immune to corrosion that can cause signal deterioration.

4.

Power Terminals – The dual power and ground connectors on the Punch Power amplifier are gold-plated and will accommodate up to two 8 AWG wires maximizing the input current capability of the amplifier.

5.

REM Terminal – This gold-plated spade terminal is used for the AP (auto power) or remote turn-on of the Punch 50.

1

Power amplifier.

6.

RCA Input Jacks – The industry standard RCA jack provides an easy connection for signal level input. They are goldplated to resist the signal degradation caused by corrosion.

7.

Summed Stereo / Mono Switch – This switch is used to select whether 1 or 2 signal inputs will be used to drive the amplifier.

8.

Pass-Thru RCA Jacks – The Pass-Thru provides a convenient source for daisychaining an additional amplifier.This

eliminates the need for additional RCA cables or “Y” adapters. The Pass-Thru output is Full Range only.

9.

Input Sensitivity Control – The input level control is preset to match the output of most source units. It can be adjusted to match output levels from a variety of source units.

– 7 –

10.

Internal Crossover – This built-in crossover card is configurable for a multitude of operating frequencies. The orientation of the card in its socket determines the function of high-pass, low-pass or full range operation.

11.

Phase Switch – This switch enables you to easily invert the phase without having to disconnect the speaker wires.

12.

Crossover Switch – This multi-function switch enables you to select a 12dB per octave slope or 24dB per octave slope for the internal crossover. When switched to 0dB, the internal crossover circuit can be bypassed, maintaining

Audiophile sound quality due to a shorter signal path.

13.

LED Power Indicator – The LED illuminates when the unit is turned on.

®

ROCKFORD CORPORA

TION

MADE IN THE USA

®

W

50.

1

R

E

A M P L I F I E R

P

O

50 Watts X 1 into 4 Ohms with less than 0.10% THD + N from 20-20kHz

100 Watts X 1 into 2 Ohms with less than 0.15% THD + N from 20-20kHz

Full Range

FULL

Low-Pass

➝

➝

HP

High-Pass

➝

LP

➝

–

+

Do Not Chassis

Ground Any Speaker

.

XCard 1

10

– 8 –

I

NSTALLATION

C

ONSIDERATIONS

Tools Needed

The following is a list of tools you will need for installing the “50 Series” Power amplifiers:

Allen wrenches 9/64" & 3/32" (included)

Wire strippers

Battery post wrench

Electric hand drill and assorted bits

Wire Cutters

Voltmeter

Wire crimpers

Assorted connectors

This section focuses on some of the vehicle considerations for installing your new Punch amplifier. Checking your battery and present sound system, as well as pre-planning your system layout and best wiring routes will save installation time.

When deciding on the layout of your new system, be sure that each component will be easily accessible for making adjustments.

Before beginning any installation, be sure to follow these simple rules:

1. Carefully read and understand the instructions before attempting to install the amplifier.

2. For safety, disconnect the negative lead from the battery prior to beginning the installation.

3. For easier assembly, we suggest you run all wires prior to mounting your amplifier in place.

4. Route all of the RCA cables close together and away from any high current wires.

5. Use high quality Connecting Punch accessories for a reliable installation and to minimize signal or power loss.

6. Think before you drill! Be careful not to cut or drill into gas tanks, fuel lines, brake or hydraulic lines, vacuum lines or electrical wiring when working on any vehicle.

7. Never run wires underneath the vehicle. Running the wires inside the vehicle provides for best protection.

8. Avoid running wires over or through sharp edges. Use rubber or plastic grommets to protect any wires routed through metal, especially the firewall.

9. ALWAYS protect the battery and electrical system from damage with proper fusing. Install a fuseholder and fuse on the +12V power wire within 18" (45.7cm) of the battery terminal.

10. When grounding to the chassis of the vehicle, scrape all paint from the metal to ensure a good, clean ground connection. Grounding connections should be as short as possible and always be connected to metal that is welded to the main body, or chassis, of the vehicle.

– 9 –

M

OUNTING

L

OCATION S

The mounting location and position of your amplifier will have a great effect on its ability to dissipate the heat generated under normal operation. The design of our cast aluminum heatsink serves to easily dissipate the heat generated over a wide range of operating conditions. However, to maximize the performance of your amplifier, care should be taken to ensure adequate ventilation.

Trunk Mounting

Mounting the amplifier vertically on a surface with the fin grooves running up and down will provide the best cooling of the amplifier.

Mounting the amplifier on the floor of the trunk will work but provides less cooling capability than vertical mounting.

Mounting the amplifier upside down to the rear deck of the trunk will not provide proper cooling and will severely affect the performance of the amplifier and is strongly not recommended.

Passenger Compartment Mounting

Mounting the amplifier in the passenger compartment will work as long as you provide a sufficient amount of air for the amplifier to cool itself. If you are going to mount the amplifier under the seat of the vehicle, you must have at least 1"

(2.54cm) of air gap around the amplifier's heatsink.

Mounting the amplifier with less than 1" (2.54cm) of air gap around the heatsink in the passenger compartment will not provide proper cooling and will severely affect the performance of the amplifier and is strongly not recommended.

Engine Compartment Mounting

Rockford Fosgate amplifiers should never be mounted in the engine compartment. Not only will this void your warranty but could create an embarrassing situation caused by the ridicule from your friends.

B

ATTERY AND

C

HARGING

Amplifiers will put an increased load on the vehicle's battery and charging system. We recommend checking your alternator and battery condition to ensure that the electrical system has enough capacity to handle the increased load of your stereo system. Stock electrical systems which are in good condition should be able to handle the extra load of any Rockford amplifier without problems, although battery and alternator life can be reduced slightly. To maximize the performance of your Rockford

Fosgate amplifier, we suggest the use of a heavy duty battery and an energy storage capacitor.

– 10 –

W

I R I N G

T

H E

S

Y S T E M

CAUTION: Avoid running power wires near the low level input cables, antenna, power leads, sensitive equipment or harnesses. The power wires carry substantial current and could induce noise into the audio system.

1. Configure the internal XCard crossovers prior to installation. Refer to the “Using the Signal Switching Network” (page

19 for the 50.

2 and page 31 for 50.

1

) for further information.

2. Plan the wire routing. Take care when running signal level RCA cables to keep them close together but isolated from the amplifier's power cables and any high power auto accessories, especially electric motors. This is done to prevent coupling the noise from radiated electrical fields into the audio signal. When feeding the wires through the firewall or any metal barrier, protect them with plastic or rubber grommets to prevent short circuits. Leave the wires long at this point to adjust for a precise fit at a later time.

3. Prepare the Power cable for attachment to the amplifier by stripping 5/8" of insulation from the end of the wire. The use of 8 gauge power cable can interfere with the installation of the end caps. Proper wire dress can prevent this from occurring. To prevent the wire from fraying, strip the insulation at a 45

°

angle. Insert the bared wire into the B+ terminal with the long side of the insulation on the top. Bend the cable down at a 90

°

angle. Tighten the set screw to secure the cable in place. We recommend using (2) 8 gauge cables for power and for ground. This will give you the best performance possible.

STRIP WIRE

>

<

AMP

>

5/8"

>

>

INSULATION

4. Strip 3/8" from the battery end of the power cable and crimp a large ring terminal to the cable. Use the ring terminal to connect to the battery positive terminal. Do not install the fuse at this time.

5. Prepare a length of cable to be used for the ground connection. Strip 5/8" of insulation from the end of the cable as described above and connect to the appropriate terminal of the amplifier. Prepare the chassis ground by scraping any paint from the metal surface and thoroughly clean the area of all dirt and grease. Strip the other end of the wire and attach a ring connector. Fasten the cable to the chassis using a non-anodized screw and a star washer.

6. Prepare the REM turn-on wire for connection to the amplifier by stripping 1/4" of insulation from the wire end and crimping an insulated spade connector in place. Slide the connector over the REM terminal on the amplifier. Connect the other end of the REM wire to a switched 12 volt positive source. The switched signal is usually taken from the source unit's auto antenna or the accessory lead. If the source unit does not have these outputs available, the recommended solution is to wire a mechanical switch in line with a 12 volt source to activate the amplifier.

7. Securely mount the amplifier (with supplied screws) to the vehicle or amp rack. Be careful not to mount the amplifier on cardboard or plastic panels. Doing so may enable the screws to pull out from the panel due to road vibrations or sudden vehicle stops.

8. Connect the source signal to the amplifier by plugging the RCA cables into the input jack(s) at the amplifier. If using

Balanced Line Inputs, refer to page 24.

9. Connect the speakers. Strip the speaker wires 5/8" and insert into the appropriate terminal on the amplifier. Insert the bared wire into the speaker terminal and tighten the set screw to secure into place. Be sure to maintain proper speaker polarity. DO NOT chassis ground any of the speaker leads as unstable operation may result.

10. Perform a final check of the completed system wiring to ensure that all connections are accurate. Check all power and ground connections for frayed wires and loose connections which could cause problems from road vibrations.

– 11 –

11. After the final inspection is complete, install the power fuse and enjoy listening. During the initial listening period, you may need to “fine tune” any phasing and level settings within your particular vehicle. To aid in this procedure, play a track with high musical content and cruise around your neighborhood. After fully evaluating the transient response of your system and making any final adjustments, all your neighbors within a 1 mile radius will assume that you have just successfully completed another upgrade to your audio system for which they will probably spill thumbtacks on your driveway.

NOTICE!

Amplifiers using the trans• nova topology improve in sound quality after warming up. We recommend operating the 50.

2

and 50.

1

for approximately

15 minutes prior to evaluation under judging criteria or tune-ups to establish its normal operating temperature.

* Your friends will call it MAGIC, you can call it Rockford technology! *

U

SING

P

ASSIVE

C

ROSSOVERS

n c e d a d v a a t i o n

O p e r

A passive crossover is a circuit that uses capacitors and/or coils and is placed on speaker leads between the amplifier and speaker. The crossover delegates a specific range of frequencies to the speaker for optimum driver performance. A crossover network can perform one of three functions: High-Pass (capacitors), Low-Pass (inductors or coils) and Bandpass

(combination of capacitor and coil).

The most commonly used passive crossover networks are 6dB/octave systems. These are easy to construct and require one component per filter. Placing this filter in series with the circuit will reduce power to the speaker by 6dB/octave above or below the crossover point depending on whether it is a high-pass or low-pass filter. More complex systems such as 12dB/ octave or 18dB/octave can cause impedance problems if not professionally designed.

Passive crossovers are directly dependent upon the speaker's impedance and component value for accuracy. When passive crossover components are used in multiple speaker systems, the crossover's effect on the overall impedance should be taken into consideration along with the speaker's impedance when determining amplifier loads.

– 12 –

T

ABLE OF

C

ROSSOVER

C

OMPONENT

V

ALUES

L

6dB/Octave Low-Pass

C

6dB/Octave High-Pass

Freq.

Hertz

80

100

130

200

260

400

600

800

1000

1200

1800

4000

6000

9000

12000

L

4.1mH

3.1mH

2.4mH

2 OHMS

C

1000

µ

F

800

µ

F

600

µ

F

1.6mH

1.2mH

.8mH

.5mH

.41mH

.31mH

.25mH

.16mH

.08mH

400

µ

F

300

µ

F

200

µ

F

136

µ

F

100

µ

F

78

µ

F

66

µ

F

44

µ

F

20

µ

F

51

µ

H

34

µ

H

25

µ

H

14

µ

F

9.5

µ

F

6.6

µ

F

Speaker Impedance

4 OHMS

L

8.2mH

6.2mH

4.7mH

C

500

µ

F

400

µ

F

300

µ

F

L

16mH

12mH

10mH

8 OHMS

C

250

µ

F

200

µ

F

150

µ

F

3.3mH

2.4mH

1.6mH

1.0mH

.82mH

.62mH

.51mH

.33mH

.16mH

200

µ

F

150

µ

F

100

µ

F

68

µ

F

50

µ

F

39

µ

F

33

µ

F

22

µ

F

10

µ

F

6.8mH

4.7mH

3.3mH

2.0mH

1.6mH

1.2mH

1.0mH

.68mH

.33mH

100

µ

F

75

µ

F

50

µ

F

33

µ

F

26

µ

F

20

µ

F

16

µ

F

10

µ

F

5

µ

F

.10mH

68

µ

H

51

µ

H

6.8

µ

F

4.7

µ

F

3.3

µ

F

.20mH

.15mH

100

µ

H

3.3

µ

F

2.2

µ

F

1.6

µ

F

6dB/Octave High-Pass and Low-Pass Filters

L = Low-Pass (Inductor)

C = High-Pass (Capacitor)

For more information, see your Authorized Rockford Fosgate Dealer.

c e d a d v a n a t i o n

O p e r

– 13 –

U

SING THE

XC

ARD

The crossover functions are controlled through the use of an XCard and can be set for high-pass, low-pass or full range operation. The XCard shipped with your amplifier is set for Full Range. Each crossover card has two faces: one face operates

Full Range, the other has arrows to indicate the edge for selecting HP (high-pass) or LP (low-pass) operation. Orient the card with the desired operating edge, indicated by the arrow, toward the socket terminals inside the amplifier. Firmly, but carefully, plug the card into the socket.

LP

High-Pass

HP

HP

Low-Pass

LP

Full Range

FULL

↕

C

USTOMIZING THE

XC

ARD

a d v a n c e d r a t i o n

O p e

The crossover point can be altered by changing the 4 resistor values. Use the following formula to select the appropriate resistor value to be placed on the XCard.

3386 fo

= R (in k

Ω

) for .047mf cap

7234 fo

= R (in k

Ω

) for .022mf cap

The actual formula is: R =

1

2

π

foc

Where: R =

Ω fo = desired crossover frequency c = capacitor in farads ex: .047 x 10-6 for .047mf cap

Crossover Card

High Pass

Low Pass

Full Range

FULL

– 14 –

1.0kHz

1.2kHz

2kHz

3kHz

4kHz

5kHz

6kHz

7kHz

8kHz

200Hz

300Hz

400Hz

500Hz

600Hz

700Hz

800Hz

900Hz

55Hz

60Hz

65Hz

70Hz

75Hz

80Hz

85Hz

90Hz

Frequency

20Hz

25Hz

30Hz

35Hz

40Hz

45Hz

50Hz

XC

ARD

R

ESISTOR

C

HART

Our tests have shown that using 0.047mf capacitors for frequencies below 100Hz, and 0.022mf capacitors for frequencies above 100Hz, result in more linear crossover control. Refer to the Specifications page to determine the capacitor value of each supplied XCard.

Butterworth Alignment Q = .707

1% resistors used with 0.047mF capacitors

Butterworth Alignment Q = .707

1% resistors used with 0.022mF capacitors

R1

45.3k

Ω

42.2k

Ω

40.2k

Ω

37.4k

Ω

3.40k

Ω

2.80k

Ω

1.69k

Ω

1.10k

Ω

845

Ω

665

Ω

562

Ω

487

Ω

422

Ω

16.9k

Ω

11.3k

Ω

8.45k

Ω

6.65k

Ω

5.62k

Ω

4.75k

Ω

4.22k

Ω

3.74k

Ω

169k

Ω

133k

Ω

110k

Ω

95.3k

Ω

84.5k

Ω

75k

Ω

68.1k

Ω

61.9k

Ω

56.2k

Ω

52.3k

Ω

48.7k

Ω

R2

45.3k

Ω

42.2k

Ω

40.2k

Ω

37.4k

Ω

3.40k

Ω

2.80k

Ω

1.69k

Ω

1.10k

Ω

845

Ω

665

Ω

562

Ω

487

Ω

422

Ω

16.9k

Ω

11.3k

Ω

8.45k

Ω

6.65k

Ω

5.62k

Ω

4.75k

Ω

4.22k

Ω

3.74k

Ω

169k

Ω

133k

Ω

110k

Ω

95.3k

Ω

84.5k

Ω

75k

Ω

68.1k

Ω

61.9k

Ω

56.2k

Ω

52.3k

Ω

48.7k

Ω

R1

357k

Ω

287k

Ω

237k

Ω

205k

Ω

178k

Ω

162k

Ω

143k

Ω

130k

Ω

121k

Ω

110k

Ω

102k

Ω

95.3k

Ω

90.9k

Ω

84.5k

Ω

86k

Ω

7.15k

Ω

6.04k

Ω

3.57k

Ω

2.37k

Ω

1.76k

Ω

1.43k

Ω

1.21k

Ω

10.2k

Ω

909

Ω

80.6k

Ω

35.7k

Ω

23.7k

Ω

17.8k

Ω

14.3k

Ω

12.1k

Ω

10.2k

Ω

9.9k

Ω

1.0kHz

1.2kHz

2.0kHz

3.0kHz

4.0kHz

5.0kHz

6.0kHz

7.0kHz

8.0kHz

200Hz

300Hz

400Hz

500Hz

600Hz

700Hz

800Hz

900Hz

55Hz

60Hz

65Hz

70Hz

75Hz

80Hz

85Hz

90Hz

Frequency

20Hz

25Hz

30Hz

35Hz

40Hz

45Hz

50Hz

R2

357k

Ω

287k

Ω

237k

Ω

205k

Ω

178k

Ω

162k

Ω

143k

Ω

130k

Ω

121k

Ω

110k

Ω

102k

Ω

95.3k

Ω

90.9k

Ω

84.5k

Ω

86k

Ω

7.15k

Ω

6.04k

Ω

3.57k

Ω

2.37k

Ω

1.76k

Ω

1.43k

Ω

1.21k

Ω

10.2k

Ω

909

Ω

80.6k

Ω

35.7k

Ω

23.7k

Ω

17.8k

Ω

14.3k

Ω

12.1k

Ω

10.2k

Ω

9.9k

Ω n c e d a d v a a t i o n

O p e r

– 15 –

50.

2

I

NSTALLATION

50.

2

Power Connections (Option #1)

Power

REM Dual B+ Dual GND

Connect to remote turn-on lead of source unit.

Connect to chassis ground of vehicle*

Less than 18"

+ –

Connect to B+ of battery with a 40 amp fuse.

*Keep wire as short as possible.

50.

2

Power Connections (Option #2)

Power

REM Dual B+ Dual GND

Connect to remote turn-on lead of source unit.

Connect to chassis ground of vehicle*

Less than 18"

+ –

Connect to B+ of battery with a 40 amp fuse.

*Keep wire as short as possible.

– 16 –

Optional energy storage capacitor

I

O

N

A

L

L

A

T

I

N

S

T

Stereo Operation

RCA

Input

Unbal.

L (Mono) R

Speaker

+ L –

0

°

-180

°

Gain

Bal.

Pass

Thru

L R

Bal.

Input

E Z - 1 8 0

°

- 0

Bridged

°

Gain

Speaker

– R +

–

–

1

Ω

Min.

1

Ω

Min.

+

• RCA inputs are connected to both left and right channels

• Signal Input Switch selected to Unbalanced for RCA input

• Left Phase Switch set to 0

°

• Right Phase Switch set to 0

°

• Gain for left and right channels operate independently

• Impedance for each channel should be 1

Ω

minimum

• XCard can be High-Pass, Low-Pass or Full Range position

+

Stereo/Mono Operation

RCA

Input

Unbal.

L (Mono) R

Speaker

+ L –

0

°

-180

°

Gain

Bal.

Pass

Thru

L R

Bal.

Input

E Z - 1 8 0

°

- 0

°

Bridged

Gain

Speaker

– R +

–

+

1

Ω

min.

1

Ω

min.

+

–

+

Speaker

Terminal

+ –

2

Ω

min.

• RCA inputs are connected to both left and right channels

• Signal Input Switch selected to Unbalanced for RCA input

• Left Phase Switch set to 0

°

•

Right Phase Switch set to 180

°

for stereo/mono operation

• All speaker polarity on right channel is inverted to correct for signal phase

• Gain for left and right channels set equally to balance the subwoofer

• Impedance for each channel should be 1

Ω

minimum

• Impedance for bridged channel should be 2

Ω

minimum

• XCard is in Full Range position

• Passive Crossovers are needed for proper stereo/mono operation

– 17 –

–

Speaker

Terminal

L

L

A

T

I

O

N

I

N

S

T

A

Bridged Operation

RCA Input

+

Speaker

Terminal

Unbal.

L (Mono) R

Speaker

+ L –

0

°

-180

°

Gain

Bal.

Pass

Thru

L R

Bal.

Input

E Z - 1 8 0

°

- 0

°

Bridged

Gain

Speaker

– R +

+ –

–

Speaker

Terminal

2

Ω

min.

• RCA inputs are connected to both left and right channels

• Signal Input Switch selected to Unbalanced for RCA input

• Left Phase Switch set to 0

°

• Right Phase Switch set to 180

°

• Inverting the right signal will allow the bridged woofer to operate correctly

• Gain for left and right channels set equally to balance the subwoofer

• Impedance for bridged channel should be 2

Ω

minimum

• XCard is in High-Pass, Low-Pass or Full Range position

EZ-Bridged Operation

Mono

Input

+

Speaker

Terminal

Unbal.

L (Mono)

R

Speaker

+ L –

0

°

-180

°

Gain

Bal.

Pass

Thru

L R

Bal.

Input

E Z - 1 8 0

°

- 0

°

Bridged

Gain

Speaker

– R +

+ –

–

Speaker

Terminal

2

Ω

min.

• RCA input is connected to L (Mono) input

• Signal Input Switch to Unbalanced for RCA input

• Left Phase Switch at 0

°

• Right Phase Switch set to E-Z Bridge for the following to occur:

L (Mono) RCA input to drive both the left and right channels

Left Gain will control both the left and right channels

Right Phase will be inverted 180

°

which will allow the bridged woofer to operate correctly

• Impedance for bridged channel should be 2

Ω

minimum

• XCard is in the High-Pass, Low-Pass or Full Range position

– 18 –

A

L

L

A

T

I

N

S

T

I

O

N

U

S I N G T H E

50.

2

S

IGNAL

S

W I T C H I N G

N

E T W O R K

L

A

T

I

O

N

I

N

S

T

A

L

The Punch 50.

2

Power amplifier has a crossover switching network which enables you to:

• “Audiophile Bypass” the 50.

2

and Pass-Thru

• Configure a 12dB per octave filter for both 50.

2 and Pass-Thru

• “Audiophile Bypass” the 50.

2

and configure a 12dB per octave filter for the Pass-Thru

• Configure a 24dB per octave filter for the 50.

2

and “Audiophile Bypass” the Pass-Thru

• Configure a 12dB per octave bandpass filter for the 50.

2

and “Audiophile Bypass” the Pass-Thru

The crossover switching network allows the crossover to be distributed to the amplifier and Pass Thru in many different configurations. The orientation of both switches configure the distribution pattern to where the crossover signal will be routed.

Amplifier

XCard Options

Pass Thru

XCard 1 XCard 2

W

50.

2

E R

A M P L I F I E R

P O

25 Watts X 2 into 4 Ohms with less than 0.05% THD + N from 20-20kHz

50 Watts X 2 into 2 Ohms with less than 0.10% THD + N from 20-20kHz

®

®

ROCKFORD CORPORATION

MADE IN THE USA

Amplifier

XCard 1

Amplifier

XCard 2

Not Used

Audiophile Bypass

Not Used

XCard 1 XCard 2

Audiophile Bypass

Not Used

Amp Only

Pass Thru

XCard 1 XCard 2

High-Pass

Low-Pass

Full Range

– 19 –

*Bridging Note: The Punch 50.

2

can be bridged in many configurations. Refer to your owner's manual to determine which mode will work best in your system.

“Audiophile Bypass” as it affects the output of the 50.

2

and Pass-Thru.

XCard 1

XCard not required.

XCard 2

VOL

AUD

PWR

DISC

AMFM ST LD RDM

Ch

RPT

D.SCN

1

CLOCK

DSPL

SCAN

2

AUTO

P.SCN

RPT

3

RDM

4

ILLUM

LOUD

DIM

5

PAUSE

6

SEL

TUNE

R

Unbal.

Speaker

+ L –

0

°

-180

°

Gain

Bal.

Pass

Thru

L (Mono)

R

L R

Bal.

Input

EZ-180

°

-0

°

Bridged

Gain

Speaker

– R +

+

–

Full Range Full Range

20Hz

20kHz

+

Full Range

–

20Hz

20Hz

20kHz

• 50.

2

bypasses the circuitry of XCard 1 and XCard 2

• Pass-Thru bypasses the circuitry of XCard 1 and XCard 2

• The 50.

2

and Pass-Thru are in Audiophile Bypass mode which maintains signal integrity resulting in a better sounding amplifier

• The XCards do not need to be inserted to allow the 50.

2

or Pass-Thru to operate

20kHz

+

–

T

I

L

A

O

N

S

T

I

N

A

L

– 20 –

Configure a 12dB per octave filter for both the 50.

2

and Pass-Thru.

250x

2

2

XCard*

HP

Pass Thru

XCard*

LP

VOL

AUD

PWR

DISC

AMFM ST LD RDM

Ch

RPT

® ®

D.SCN

1

CLOCK

DSPL

SCAN

2

AUTO

P.SCN

RPT

3

RDM

4

ILLUM

LOUD

DIM

5

PAUSE

6

SEL

TUNE

R

XCard 1 XCard 2

Unbal.

L (Mono) R

Speaker

+ L –

0

°

-180

°

Gain

Bal.

Pass

Thru

L R

Bal.

Input

EZ-180

°

-0

°

Bridged

Gain

Speaker

– R +

+

–

12dB/Octave High-Pass

20Hz 80Hz

20kHz

+ –

12dB/Octave Low-Pass

20Hz 80Hz 20kHz

• 50.

2

uses output from XCard 1

• Pass-Thru uses output from XCard 2

+

12dB/Octave High-Pass

–

20Hz 80Hz

20kHz

L

L

T

A

A

T

I

N

S

I

O

N

– 21 –

“Audiophile Bypass” the 50.

2

and configure a 12dB per octave filter for the Pass-Thru.

XCard not required.

Pass Thru XCard

LP

VOL

AUD

PWR

DISC

AMFM ST LD RDM

Ch

RPT

D.SCN

1

CLOCK

DSPL

SCAN

2

AUTO

P.SCN

RPT

3

RDM

4

ILLUM

LOUD

DIM

5

PAUSE

6

SEL

TUNE

R

XCard 1 XCard 2

L

L

T

A

A

T

I

N

S

I

O

N

Unbal.

L (Mono) R

Speaker

+ L –

0

°

-180

°

Gain

Bal.

Pass

Thru

L R

Bal.

Input

EZ-180

°

-0

°

Bridged

Gain

Speaker

– R +

+

–

Full Range

20Hz

20kHz

+ –

12dB/Octave Low-Pass

20Hz 80Hz 20kHz

20Hz

Full Range

+

–

20kHz

• 50.

2

bypasses the circuitry of XCard 1

• Pass-Thru uses output from XCard 2

• The 50.

2

is in Audiophile Bypass mode which maintains signal integrity resulting in a better sounding amplifier

• XCard 1 does not need to be inserted to allow the 50.

2

to operate

– 22 –

– 23 –

L

L

T

A

A

T

I

N

S

I

O

N

U

SING THE

50.

2

B

ALANCED

L

INE

I

NPUTS

The Balanced Line Inputs can be utilized with the optional Balanced Line Transmitter. Unlike standard RCA cables that use two wires to carry the audio signal and ground, balanced lines use three. In a balanced line, the output signal and its inverted replica travel down a pair of wires where the ground connects via the shield. As the amplifier receives the signals, it cancels out whatever signals are common to both wires. The use of balanced lines helps in preventing radiated noise pickup in the signal cables and has been proven effective in studio installation where long cable runs and magnetic fields make maintaining signal integrity difficult.

Connecting the BLT

®

BALANCED LINE TRANSMITTER

®

– L. SIG

+ L. SIG

–18V

+18V

– R. SIG

+ R. SIG

SHIELD

BALANCED LINE

OUTPUT LED

INPUT

L R

Speaker

+ L –

L

L

(Mono)

R R

0 – 180

°

Bass

EQ

Balanced

Unbalanced

L

Pass Thru

R

Pass Thru

Balanced

Input

EZ Bridged

Gain

180

°

- 0

°

Speaker

– R +

• Signal Input Switch to Balanced for Balanced Line Input

• Gain for Left and Right channels set to minimum

CAUTION!! You must turn the gain controls to minimum when using the Balanced Line Transmitter. If the input gains need to be adjusted, this can now be done in the Balanced Line Transmitter.

– 24 –

Level Setting the BLT

VOL

AUD

PWR

DISC

AMFM ST LD RDM

Ch

RPT

® ®

1kHz Test Tone @ “0dB”

D.SCN

1

CLOCK

DSPL

SCAN

2

AUTO

P.SCN

RPT

3

RDM

4

ILLUM

LOUD

DIM

5

PAUSE

6

SEL

TUNE

R

9.3

VAC

+

–

®

BALANCED LINE TRANSMITTER

®

L

R

R

L

a d v a n c e d a t i o

O p e r n

• Disconnect Speaker(s) from the 50.

2

• CD Software used to set levels is a test tone of 1kHz at “0dB” or “All Bits High”

• Source Unit set to 3/4 volume (or maximum unclipped output)

• Remove BLT Cover to access test pads and gain pots

• AC Voltmeter set to AC Volts

• AC Voltmeter “–” connected to RCA shield of BLT

• AC Voltmeter “+” connected to test pad inside the BLT

• Adjust BLT Gain from 2.9 VRMS min. to 9.3 VRMS max per test pad (see chart below)

Be sure the time index reads greater than 30 seconds on source unit.

Gain Overlap

+0dB*

BLT Output (AC Volts)

2.9 VRMS

+5dB

+10dB

5.2 VRMS

9.3 VRMS

Performance Characteristics

Best S/N Ratio, Reduced SPL

(Used for Optimum Sound Quality)

Good S/N Ratio & SPL

(Use for Audiophile Listener)

Best Compromise between S/N Ratio & SPL

(Used for Average Listener)

*Absence of gain overlap will reduce SPL and may not permit amplifier to reach full output power due to various CD software.

– 25 –

50.

1

I

NSTALLATION

50.

1

Power Connections (Option #1)

REM Dual B+ Dual GND

Connect to remote turn-on lead of source unit.

Less than 18"

+

Connect to chassis ground of vehicle*

–

Connect to B+ of battery with a 40 amp fuse.

*Keep ground connections as close to each other as possible.

50.

1

Power Connections (Option #2)

REM

Connect to remote turn-on lead of source unit.

Dual B+ Dual GND

Connect to chassis ground of vehicle*

Less than 18"

+

–

Connect to B+ of battery with a 40 amp fuse.

*Keep ground connections as close to each other as possible.

– 26 –

Optional energy storage capacitor

I

O

N

L

L

A

T

I

N

S

T

A

Mono Operation

RCA Input

L (Mono) R

Speaker

– +

Gain

L Pass Thru R Pass Thru

Power

X-Over

24dB/12dB/0dB

0

°

-180

°

L + R / L (Mono)

RCA Inputs

– +

1

Ω

minimum

• Signal Input Switch set to L+R for RCA input

• Phase Switch set to 0

°

• Impedance should be 1

Ω

minimum

• XCard can be set for High-Pass, Low-Pass or Full Range

L

L

A

T

I

O

N

I

N

S

T

A

– 27 –

Speaker – +

Speaker – +

– 28 –

L

L

A

T

I

O

N

I

N

S

T

A

Speaker – +

Speaker – +

– 29 –

L

L

A

T

I

O

N

I

N

S

T

A

Speaker – +

Speaker – +

– 30 –

L

L

A

T

I

O

N

I

N

S

T

A

U

S I N G T H E

50.

1

S

IGNAL

S

W I T C H I N G

N

E T W O R K

“Audiophile Bypass” the 50.

1

VOL

AUD

PWR

DISC

AMFM ST LD RDM

Ch

RPT

® ®

CLOCK

D.SCN

DSPL

SCAN

1 2

AUTO

P.SCN

RPT

3

ILLUM

RDM

LOUD

DIM

4 5

PAUSE

6

SEL

TUNE

R

L (Mono) R

Speaker

– +

Gain

L Pass Thru R Pass Thru

Power

X-Over

24dB/12dB/0dB

0

°

-180

°

L + R / L (Mono)

RCA Inputs

20Hz

–

+

Full Range

20kHz

20Hz

Full Range

20kHz

+ –

• Xover is set to 0dB

• The 50.

1

is in Audiophile Bypass mode which maintains signal integrity resulting in a better sounding amplifier

• Pass-Thru has Full Range output only

• The XCard does not need to be inserted to allow the 50.

1

to operate

XCard not required.

XCard

L

L

A

T

I

O

N

I

N

S

T

A

– 31 –

Configure a 12dB per octave filter for the 50.

1

VOL

AUD

PWR

DISC

AMFM ST LD RDM

Ch

RPT

® ®

CLOCK

D.SCN

1

DSPL

SCAN

2

AUTO

P.SCN

RPT

3

ILLUM

RDM

LOUD

DIM

4 5

PAUSE

6

SEL

TUNE

R

L (Mono) R

Speaker

– +

Gain

L Pass Thru R Pass Thru

Power

X-Over

24dB/12dB/0dB

0

°

-180

°

L + R / L (Mono)

RCA Inputs

–

+

12dB/Octave Low-Pass

Full Range

20Hz 20kHz

20Hz

• Xover is set to 12dB

• Pass-Thru has Full Range output only

20kHz

+ –

LP

XCard

L

L

A

T

I

O

N

I

N

S

T

A

– 32 –

Configure a 24dB per octave filter for the 50.

1

VOL

AUD

PWR

DISC

AMFM ST LD RDM

Ch

RPT

® ®

D.SCN

1

CLOCK

DSPL

SCAN

2

AUTO

P.SCN

RPT

3

RDM

4

ILLUM

LOUD

DIM

5

PAUSE

6

SEL

TUNE

R

L (Mono) R

Speaker

– +

Gain

L Pass Thru R Pass Thru

Power

X-Over

24dB/12dB/0dB

0

°

-180

°

L + R / L (Mono)

RCA Inputs

–

+

24dB/Octave Low-Pass

Full Range

20Hz

20kHz

+ –

20Hz

20kHz

• Xover is set to 24dB

• Pass-Thru has Full Range output only

• By switching the crossover to 24dB, the signal is routed through the XCard twice

LP

XCard

L

L

A

T

I

O

N

I

N

S

T

A

– 33 –

S

YSTEM

D

IAGRAMS

100 Watt System

(rated @ 4 ohms)

Total Power Delivery (RMS)

Tweeters 100 Watts

Midrange

Woofers

100 Watts

200 Watts

VOL

AUD

PWR

DISC

AMFM ST LD RDM

Ch

RPT

® ®

D.SCN

1

CLOCK

DSPL

SCAN

2

AUTO

P.SCN

RPT

3

RDM

4

ILLUM

LOUD

DIM

5

PAUSE

6

SEL

TUNE

R

80Hz HP 80Hz HP

Pass-Thru

TX-4183

3kHz-20kHz

18dB/octave HP

PWR-14X

PWR-14X

TX-4183

PWR-54

4

Ω

80Hz-20kHz

24dB/octave HP

50.

2

TX-4183

PWR-54

4

Ω

TX-4183

PWR-14X

3kHz-20kHz

18dB/octave HP

PWR-14X

80Hz-20kHz

24dB/octave HP

80Hz LP

80Hz LP

50.

2

4

Ω

RFR-1410

20Hz-80Hz

24dB/octave LP

– 34 –

– 35 –

– 36 –

500 Watt System

(rated @ 4 ohms)

Total Power Delivery (RMS)

Tweeters 400 Watts

Midrange

Midbass

Woofers

400 Watts

400 Watts

800 Watts

VOL

AUD

PWR

DISC

AMFM ST LD RDM

Ch

RPT

D.SCN

1

CLOCK

DSPL

SCAN

2

AUTO

P.SCN

RPT

3

RDM

4

ILLUM

LOUD

DIM

5

PAUSE

6

SEL

TUNE

R

P/T*

Front Left

Front Right

P/T*

50.

2

4

Ω

PWR-14X

50.

2

3kHz-20kHz

24dB/octave HP

3k HP

3k HP

3kHz-20kHz

24dB/octave HP

3k HP 3k HP

4

Ω

PWR-14X

P/T*

50.

2

400Hz HP 3k LP

4

Ω

PWR-54

400Hz-3kHz

12dB/octave BP

P/T*

50.

2

4

Ω

PWR-64

80Hz HP 400Hz LP

P/T*

80Hz LP

XCard

80Hz LP for all

4 rear amps

50.

1

400Hz HP 3k LP

P/T*

400Hz-3kHz

12dB/octave BP

4

Ω

PWR-54

50.

2

P/T*

50.

2

50.

1

4

Ω

PWR-64

80Hz HP

400Hz LP

80Hz-400Hz

12dB/octave BP

80Hz-400Hz

12dB/octave BP

20Hz-80Hz

24dB/octave LP

RFR-1810

*P/T (Pass-Thru) is used to daisy-chain amplifiers.

RFR-1810

20Hz-80Hz

24dB/octave LP

– 37 –

R

OCKFORD

F

OSGATE

A

CCESSORIES

®

Balanced Line Transmitter (FG-BLT)

The Balanced Line Transmitter converts signal RCA cables from the source unit to balanced signals. The BLT improves sound quality in the system by eliminating noises generated by vehicle electrical systems. The BLT is available for Rockford Fosgate products that offer a balanced input.

VOL

AUD

PWR

DISC

AMFM

ST LD RDM

Ch

RPT

D.SCN

1

CLOCK

DSPL

SCAN

2

AUTO

P.SCN

RPT

3

RDM

4

ILLUM

LOUD

DIM

5

PAUSE

6

SEL

TUNE

R

NOISE

®

BALANCED LINE TRANSMITTER

®

BALANCED LINE

OUTPUT LED

INPUT

L R

Speaker

+ L –

L

L

(Mono)

R R

Gain

Phase

0 – 180

°

Bass

EQ

Balanced

Unbalanced

L R

Pass Thru Pass Thru

Balanced

Input

EZ Bridged

Gain

180

°

- 0

°

Speaker

– R +

ATTENTION: We recommend your Authorized Rockford Fosgate Dealer install your new accessory.

– 38 –

®

Energy Storage Capacitors

Energy Storage Capacitors are used to provide extra current needed by amplifiers to reproduce musical transients.

The capacitors also have the natural ability to filter AC ripple caused by the alternator, reducing the chance of noise in the system. The capacitors are available in a variety of values and will maximize both the sound quality and performance that Rockford Fosgate amplifiers can deliver.

Power

REM Dual B+ Dual GND

Battery +

® t h e c o n n e c t i n g

®

®

1.0

punch

cap

1 farad • 20 VDC • 95°C

®

• Recommended capacitance is 1 farad per 1000 watts

XCard Crossovers

Additional crossover card frequencies are available for specialized requirements. You can get the following

XCards from your Authorized Rockford Fosgate Dealer.

XM50 = 50Hz

XM70 = 70Hz

XM80 = 80Hz

XM100 = 100Hz

XM150 = 150Hz

XM200 = 200Hz

XM275 = 275Hz

XM400 = 400Hz

XM4.5k

= 4,500Hz

XM6.5k

= 6,500Hz

XM00 = Blank card for custom crossover

Crossover Card

High Pass

Low Pass

Full Range

FULL

ATTENTION: We recommend your Authorized Rockford Fosgate Dealer install your new accessory.

– 39 –

T

ROUBLESHOOTING

Symptom

Amplifier does not turn on.

(Power LED is off)

TROUBLE- S

H

O

O

T

I

N

G

Diagnosis

Voltage applied to the REM terminal of the amplifier is not between 10.5 and 15.5

volts or there is no voltage present.

Voltage to the B+ terminal of the amplifier is not between 10.5 and 15.5 volts or there is no voltage present.

Amplifier is not properly grounded.

Remedy

Check the alternator, battery, fuse, and wiring and repair as necessary. If the voltage is above 15.5 volts, have the electrical system inspected by an authorized car service center.

Check the alternator, battery, fuse, and wiring and repair as necessary. If the voltage is above 15.5 volts, have the electrical system inspected by an authorized car service center.

Check wiring and repair as necessary.

Amplifier has no sound.

(Power LED is on)

RCA Input from source unit is not connected or not functioning properly.

When using the BLT, Balanced Line Input from BLT is not connected or not functioning properly.

Check connections, substitute with known working source and cables and repair or replace as necessary.

Check connections, substitute with known working BLT and cables and repair or replace as necessary.

Unbalanced/Balanced Line switch is not selected for corresponding input.

Check switch position and correct as necessary.

Amplifier is in E-Z Bridge operation but incorrect signal input, speaker wiring, and/ or left channel 180

°

phase selection is chosen.

XCards are missing or not placed properly in crossover slots and/or switches are not properly selected.

Check signal, speaker wiring, and left channel phase selection installation and correct as needed.

Check crossover switches and XCard positions and repair or replace as necessary.

Speaker leads are shorted to each other or to the chassis of the vehicle.

Speakers are defective.

Disconnect existing speakers and test with known working speakers and wires. If amplifier plays, check and repair wiring and installation of speakers as necessary.

Disconnect existing speakers and test with known working speakers. If amplifier plays, check and repair speakers as necessary.

– 40 –

Symptom

Speaker Output Low or Distorted

Diagnosis

Input gain(s) for amplifier incorrectly set.

Source unit output too low or source unit has no output.

Remedy

Readjust input gains of amplifier.

Check system with known working source and repair or replace original source as needed.

Check speaker polarity and phase switch position and correct as needed.

TROUBLE- S

I

N

G

H

O

O

T

Phase selection of amplifier incorrectly selected or speakers wired out of polarity from the left to right channel.

XCards are missing or not placed properly in crossover slots and/or switches are not properly selected.

Low battery voltage or large voltage drops to the amplifier under load.

Check crossover switches and XCard positions and repair or replace as necessary.

Check the alternator, battery, fuse or circuit breaker and power and ground wiring and repair as necessary.

Amplifier Noise

(Turn-on Pop)

No output from Pass-Thru output of amplifier.

Voltage spike from output of preceding component is entering amplifier through input signal.

Voltage spike from remote turn-on lead is entering through REM input terminal.

RCA Input from source unit is not connected or not functioning properly.

When using the BLT, Balanced Line Input from BLT is not connected or not functioning properly.

Unbalanced/Balanced Line switch is not selected for corresponding input.

XCards are missing or not placed properly in crossover slots.

Disconnect input signal to amplifier and turn amplifier on and off. If noise is eliminated, connect REM lead of amplifier to source unit with a delay turn-on module.

Use different 12 volt source for REM lead of amplifier (i.e., battery direct). If noise is eliminated, use relay to isolate amplifier from noise turn-on output.

Check connections, substitute with known working source and cables and repair or replace as necessary.

Check connections, substitute with known working BLT and cables and repair or replace as necessary.

Check switch position and correct as necessary.

Check crossover switches and XCard positions and repair or replace as necessary.

– 41 –

Symptom

Low or distorted output from the

Pass-Thru output of the amplifier.

Diagnosis

Input gain(s) for amplifier incorrectly set.

Source unit output too low.

Remedy

Readjust input gains of amplifier.

Check system with known working source and repair or replace original source as needed.

Check crossover switches and XCard positions and repair or replace as necessary.

TROUBLE- S

H

O

O

T

I

N

G

XCards are missing or not placed properly in crossover slots and/or switches are not properly selected.

Low battery voltage or large voltage drops to the amplifier under load.

RCA cable or amplifier connected to Pass-

Thru output is defective.

Check the alternator, battery, fuse or circuit breaker and power and ground wiring and repair as necessary.

Check connections, substitute with known working amplifier or cables and repair or replace as needed.

• If noise persists, see your local Authorized Rockford Fosgate Dealer.

– 42 –

A

UTOSOUND

2000's

Q

UICK

C

HECK FOR

T

ROUBLESHOOTING

C

AR

A

UDIO

S

YSTEMS

Preface:

All audio systems exhibit noise; however, if the level of noise is low enough, and the signal level high enough, noise should not be a problem. This means that it is very important that the signal level throughout the system be optimized BEFORE dealing with your noise problem. Using a scope (or a small portable amplifier) and Track 99 (1kHz at all high bits) of Rockford Fosgate CD RF-

CD101 (Autosound 2000's CD #101) or Tracks 24 through 29 of Rockford Fosgate CD RF-CD102 (Autosound 2000's CD #102), adjust the system so that when the maximum usable signal level of the deck is fed into the system, all the preamp level components clip at the same time. However, we recommend up to as much as a 3:1 voltage overlap with the power amplifiers; i.e. an amplifier with a 2 volt minimum sensitivity can be driven by up to 6 volts of signal.

Noise Overview:

Car audio electrical accessories are notorious for interfering with car audio systems. The interference commonly arises from three areas:

1) Power line noise (5%), which can be attenuated with in-line noise filters,

2) Inadequate power supply isolation (45%), which can be cured with transformer signal coupling, additional isolated power supplies, or changing out components, or

3) Inductive interference (45%) – including loop area inductive noise picked up by the signal cables – which can be remedied by relocating or rewiring components, rerouting signal cables, or using twisted cable or balanced transmission systems.

Autosound 2000 1-2-3 Method of Logical Troubleshooting

I.

MUTE THE AMP(S). Insert a muting plug (shorted male RCA connector) into each amplifier channel. Turn up the amp sensitivity. Start the car and turn on the headlights, air conditioning, brake lights, etc. Listen for noise in each speaker. Be very picky here!

A.

If still noisy, substitute a small test speaker with short leads for the speakers, crossovers, and speaker leads in the car. If still noisy, substitute an isolated power supply (120 VAC to 13.8 VDC bench supply or a small motorcycle battery) for the car's alternator. If the amplifier is noisy with the test speaker, you have a BAD amp. Send it in. It really doesn't matter if it is quiet or noisy while running on the isolated supply because you have a BAD amp. Send it in for repair and if it was quiet on the isolated supply, indicate so on the repair tag.

B.

If your muted amp is quiet, you've just joined 99.5% of car audio. Amps are usually very clean and do NOT pick up unwanted noise! Continue on to Step II.

II.

DECK TO AMP. Using a new set of signal cables, connect one channel from the output of the deck directly into one channel of your clean amp. Run the cables outside the car and as far away as possible from the metal of the car. (For noise purposes, consider a 2" thick cushion of electromagnetic energy emanating from every metal surface in the car.)

A.

If still noisy, congratulations, in all probability your equalizer, electronic crossover, DSP, whatchamacallit, are just fine. This means that you can't get your deck playing quiet with your amp, right? Go to Step III.

B.

If all is quiet, congratulations, in all probability your deck and amplifier(s) are fine – you obviously have a problem with your equalizer, electronic crossover, DSP, etc. Skip on down to “Time for the Processors.”

III. MOVE THE DECK. If you're at this step, it's time to turn your system into an “amplified deck” by temporarily relocating the deck right ON TOP of the clean amplifier. Then using very, very short signal cables, connect the output of the deck into the input of the amp and test for noise. Play a zero bit track – silence – and make sure all is completely quiet.

A.

If still noisy, you're in a heap of trouble. We suggest that you try another deck and give us a call so that we can put your name into the record books. It's a bad car audio day for you.

– 43 –

B.

If the deck is quiet, then congratulations, you're on your way to a successful installation. It is now time to slowly, methodically, reinstall the deck back into its final position. Test for noise each step of the way. If the noise returns, suspect the signal cables. Forget shielding because it will have only a very, minimal effect within the audio band. We highly suggest using twisted pair cables or a balanced transmission system for cable induced noise.

Time for Processors:

By the end of Step III, you should have the deck playing quietly with the amp, with the quiet cables quietly routed. So it's time to add the signal processors – one at a time – back into the system. Simply repeat Steps II and III with the equalizer, then the electronic crossover, etc. However, before MOVING THE SIGNAL PROCESSORS to the amplifier, we highly suggest that you power the noisy process from an isolated power supply rather than the car's +12 volts DC and chassis ground. Make sure to also connect the turnon lead to the isolated power supply. If the processor is now quiet, then it is highly probable that the component has inadequate isolation. Solutions include changing components or permanently adding an external isolated power supply (Call Autosound 2000 at 209-465-3450 for info on isolated power supplies).

Summation:

During the design stage of your vehicles, try to avoid using extra batteries and high output alternators. Extra batteries are nothing but loads as soon as the engine is started and high output alternators usually make more noise than stock alternators. Also, extra batteries installed in the trunk of a car will ALWAYS force extra ripple current to flow over the car.

Install Stiffening Capacitors ® as close to the power supply input of your amplifier as possible. The big caps will feed the switching power supplies of your amps and minimize the inductive losses in your power wiring. Plus, they will help your peak system response.

In problem cases, we highly recommend the use of twisted pair cable rather than coaxial cable for RCA leads. This practice will greatly minimize cable induced noise – especially in four channel amps!

Don't forget that your system is only as good as its worst component. Do NOT use components with inadequate power supply isolation or you will be asking for problems.

The best electrical ground on a car is the CHASSIS of the car. Do NOT run ground leads up to the case of the alternator or the negative battery post. Keep ALL ground leads as short as possible.

With properly isolated components, it does NOT matter where the component is grounded. We're sorry to say that with inadequately isolated components, it matters! With poorly isolated components, different grounds can cause different noises.

The deck is the signal reference ground for the entire sound system. The deck usually has THREE connections to the car's chassis:

The black ground lead, the base of the antenna, and the metal-to-metal bond between the case of the deck and the chassis of the car. With three grounds, there is usually NO cause to worry about the ground of a deck.

Amplifiers are usually designed with adequate power supply isolation. This means that it should not matter where a deck is grounded. (Decks are grounded three times and amps float. This is car audio!)

The more components installed on a signal path, the more chances for noise to enter a system. The more electrical accessories on a car, the more noise will be produced by the alternator.

This information was compiled from more than 20 years of working in car audio. If you would like more information on this topic, or any other technical aspects of car audio, please call 800-548-8200 and ask for a subscription to Autosound 2000 Tech Briefs

— the monthly magazine for the technically inclined.

– 44 –

D

YNAMIC

P

OWER

M

EASUREMENTS

About the Dynamic Power Measurements

The Audio Graph PowerCube is a test instrument used to measure the output of an amplifier in accordance with IHF-202 industry standards. The IHF-202 standard is a dynamic power measurement and was developed as a means of measuring power in a manner that best represents the Real World operation of an amplifier. Many manufacturers, including Rockford Fosgate, at times will measure amplifier power into a fixed resistor (4 ohm, 2 ohm). While this method is useful in some types of evaluation and testing, it is not representative of an amplifier that is connected to a speaker and playing music.

Music

Music is dynamic; the sound waves are complex and constantly changing. In order to simulate this, the IHF-202 standard calls for the input signal to the amplifier to be a 1kHz bursted tone. This signal is input (on for 20 milliseconds) and reduced 20dB for 480 milliseconds. The signal is gradually increased in level until the amplifier's output exceeds 1% Total Harmonic Distortion

(THD). At 1% distortion becomes audible, therefore, any power produced above that level is considered unusable. Many manufacturers represent their amplifiers' output power in excess of 10% distortion. They use many names for this measurement, such as Total Maximum Power or Maximum Output Power. This is not indicative of the actual usable output power.

Listening to Loudspeakers - Not Resistors

A loudspeaker is not a resistor. A resistor's value (resistance measured in ohms) is fixed. A loudspeaker's impedance is dynamic.

It is constantly changing in value, dependent upon the frequency of the input signal. Therefore, measuring power with the amplifier loaded into a 4 ohm resistor is not the same as measuring power with the amplifier connected to a 4 ohm speaker. Most people do not listen to music through a resistor.

A 4 ohm speaker may experience a drop in impedance 4-6 times lower than its nominal (printed) impedance. A speaker will also create phase shifts in the signal that is passed through it. These phase shifts happen because a speaker is an inductor (voice coil) and a capacitor (compliance of the surround/spider), as well as a resistor (voice coil wire).

To simulate a speaker the Audio Graph PowerCube measures output power into 20 different loads. It tests at 8 ohms, 4 ohms,

2 ohms and 1 ohm. Each of these impedances is also tested at –60

°

, –30

°

, 0

°

, +30

°

and +60

°

phase angles. These different impedances and phase angles represent the shifts in impedance and phase that can occur in a typical loudspeaker.

Information Cubed

The data acquired in the testing procedure is then graphed in the form of a 3-dimensional cube, hence the name PowerCube.

The

Phase Angle is expressed on the horizontal axis, the Output Voltage is presented on the vertical axis and the Impedance is displayed on the Z axis. Output

Power, in watts, is listed on the left hand side for each impedance at each phase angle.

What is an Amplifier?

An amplifier by definition is a voltage generating device, recreating the signal which is input to it identically but with increased volume. It will be connected to a reactive load (the speaker). The impedance of this load and phase of the signal passing through the load will vary, dependent upon the frequency of the input signal (music).

Audio Graph – The PowerCube™

MODEL BEING

TESTED

VOLTAGE FROM

BATTERY

Amplifier:

Serial No:

PUNCH 200.

2

14.4V x 2

Owner : ROCKFORD CORPORATION x2 = STEREO

MONO = BRIDGED MONO

Rated Power : 100 W @ 4 Ohms

8

Ω

*

*

*

*

–60

–30

°

0

°

30

°

60

°

4

Ω

–60

°

–30

°

0

°

30

°

60

°

2

Ω

–60

°

–30

°

0

°

30

°

60

°

1

Ω

–60

°

–30

°

0

°

30

°

60

°

°

85 W

84 W

84 W

84 W

86 W

162 W

157 W

156 W

157 W

162 W

273 W

258 W

251 W

256 W

271 W

390 W

356 W

346 W

352 W

390 W

{

POWER

IN

WATTS

–60

°

(Cap)

{

PHASE ANGLES

0

°

(Ind) +60

°

1

Ω

• Example of a Punch 200.

2

PowerCube

{

2

Ω

Impedance

4

Ω

50V

30V

10V

8

Ω

Therefore, a perfect amplifier will be able to maintain the same output voltage regardless of load characteristics and will not alter the signal it is reproducing. A perfect amplifier when measured by the Audio Graph PowerCube would present data that forms a perfect cube. Unfortunately, amplifiers are not perfect. The laws of physics generally prevent it. A great amplifier is about the best one can hope to attain.

As you can see by the PowerCube and as you will experience by listening, your Punch amplifier is a GREAT AMPLIFIER!

– 45 –

50.

2

S

PECIFICATIONS

Dynamic Power Rating (IHF-202 Standard) - Measured at 14.4V

Per channel into a 4

Ω

load

Per channel into a 2

Ω

load

Per channel into a 1

Ω

load

2-channel bridged into a 2

Ω

load

Continuous Power Rating (Competition Standard) - Measured at 13.8 Battery Volts

RMS continuous power per channel, all channels driven into a 4

Ω

load from 20 to 20,000Hz with less than

0.05% THD (Total Harmonic Distortion)

RMS continuous power per channel, all channels driven into a 2

Ω

load from 20-20,000Hz, with less than 0.10% THD

RMS continuous power per channel, all channels driven into 1

Ω

load from 20-20,000Hz, with less than 0.3% THD

RMS continuous power bridged into a 2

Ω

load from 20-20,000Hz, with less than 0.3% THD

Common Mode Rejection Ratio (CMRR):

Signal-to-Noise Ratio:

Frequency Response:

Bandwidth:

Damping Factor @ 4

Ω

(at output connector):

Slew Rate:

IM Distortion (IHF):

Input Impedance:

Source Unit Compatibility (+15dB gain overlap)

Input Sensitivity (+0dB gain overlap):

Pass-Thru Output (ref. 1V input @ 1kHz):

B+ Fuse Size: (External to amplifier)

Fuse Type:

Crossover Slope

Factory Crossover Frequency:

Factory Default Crossover Setting:

Dimensions: (including end caps)

Specifications subject to change without notice.

– 46 –

50 Watts

90 Watts

150 Watts

300 Watts

25 Watts

50 Watts

100 Watts

200 Watts

Typically 40dB

>100dB (A-weighted)

20Hz-20,000Hz

±

0.5dB

10Hz–250kHz

±

3dB

>200

50V ms

<0.05%

20k Ohms

28V max. input

Variable from 300mV to 5V

Variable from 100mV to 960mV

40 Amp or two 20 Amp

AGU

12dB/octave Butterworth

80Hz (0.047mf)

Full Range

9-5/8"W x 13-9/32"L x 2-5/8"H

(24.4cm) x (33.73cm) x (6.6cm)

50.

1

S

PECIFICATIONS

Dynamic Power Rating (IHF-202 Standard) - Measured at 14.4V

Mono into a 4

Ω

load

Mono into a 2

Ω

load

Mono into a 1

Ω

load

2-channel Bridged (using 2 Punch 50.

1

) into a 2

Ω

load

Continuous Power Rating (Competition Standard) – Measured at 13.8 Volts

RMS continuous power mono, into a 4

Ω

load from 20-20,000Hz with less than 0.05% THD

RMS continuous power mono, into a 2

Ω

load from 20-20,000Hz with less than 0.10% THD

RMS continuous power mono, into a 1

Ω

load from 20-20,000Hz with less than 0.3% THD

RMS continuous power bridged, (using 2 Punch 50.

1

Power amplifiers in the same system) into a 2

Ω

load from 20-20,000Hz with less than 0.3% THD

100 Watts

200 Watts

325 Watts

650 Watts

50 Watts

100 Watts

200 Watts

Signal-to-Noise Ratio:

Frequency Response:

Bandwidth:

Damping Factor @ 4

Ω

(at output connector):

Slew Rate:

400 Watts

>100dB (A-weighted)

20Hz-20,000Hz

±

0.5dB

10Hz–250kHz

±

3dB

>200

IM Distortion (IHF):

Input Impedance:

Source Unit Compatiblity (+15dB gain overlap):

Input Sensitivity (+0dB gain overlap):

Pass-Thru Output:

B+ Fuse Size: (External to amplifier)

Fuse Type:

Crossover Slope:

Factory Crossover Frequency:

Factory Default Crossover Setting:

Dimensions:

50V ms

<0.05%

20k Ohms

28V max. input

Variable from 300mV to 5V

Unity Gain

40 Amp or two 20 Amp

AGU

12dB or 24dB/octave Butterworth

80Hz (0.047mf)

Full Range

Specifications subject to change without notice.

9-5/8"W x 13-9/32"L x 2-5/8"H

(24.4cm) x (33.73cm) x (6.6cm)

– 47 –

L

IMITED

W

ARRANTY

I

NFORMATION

Rockford Corporation offers a limited warranty on Rockford Fosgate products on the following terms:

• Length of Warranty

3 years on electronics

2 years on source units

90 days on electronic B-stock (receipt required)

30 days on speaker B-stock (receipt required)

• What is Covered

This warranty applies only to Rockford Fosgate products sold to consumers by Authorized Rockford Fosgate Dealers in the United

States of America or its possessions. Product purchased by consumers from an Authorized Rockford Fosgate Dealer in another country are covered only by that country’s Distributor and not by Rockford Corporation.

• Who is Covered

This warranty covers only the original purchaser of Rockford product purchased from an Authorized Rockford Fosgate Dealer in the United States. In order to receive service, the purchaser must provide Rockford with a copy of the receipt stating the customer name, dealer name, product purchased and date of purchase.

• Products found to be defective during the warranty period will be repaired or replaced (with a product deemed to be equivalent) at Rockford's discretion.

• What is Not Covered

1. Damage caused by accident, abuse, improper operations, water, theft

2. Any cost or expense related to the removal or reinstallation of product

3. Service performed by anyone other than Rockford or an Authorized Rockford Fosgate Service Center

4. Any product which has had the serial number defaced, altered, or removed

5. Subsequent damage to other components.

6. Any product purchased outside the U.S.

7. Any product not purchased from an Authorized Rockford Fosgate Dealer

• Limit on Implied Warranties

Any implied warranties including warranties of fitness for use and merchantability are limited in duration to the period of the express warranty set forth above. Some states do not allow limitations on the length of an implied warranty, so this limitation may not apply. No person is authorized to assume for Rockford Fosgate any other liability in connection with the sale of the product.

• How to Obtain Service

Please call 1-800-669-9899 for Rockford Customer Service. You must obtain an RA# (Return Authorization number) to return any product to Rockford Fosgate. You are responsible for shipment of product to Rockford.

Ship to: Electronics

Rockford Corporation

Warranty Repair Department

2055 E. 5th Street

Tempe, AZ 85281

RA#:_________________

Ship to: Speakers

Rockford Acoustic Design

(Receiving-speakers)

609 Myrtle N.W.

Grand Rapids, MI 49504

RA#:_________________

– 48 –

I

N

T

E

R

N

A

T

I O

N

A

L

I

N

F

O

R

M

A

T

I O

N

– 49 –

LEA DETENIDAMENTE LAS SIGUIENTES INSTRUCCIONES DE INSTALACIÓN DEL PRODUCTO. EVITARA POSIBLES DAÑOS

A VD., AL VEHÍCULO O AL PRODUCTO.

I

NTRODUCCIÓN

Rockford Fosgate se distingue como el lider indiscutible en la construccion de amplificadores de altas prestaciones. Desde la introduccion de los modelos 250m 2 y 500m se han fijado nuevos standards en calidad de sonido y flexibilidad que ahord han sido superados con los amplificadores de “competicion” 50.

2

y 50.

1

. Las “Serie 50” utiliza una tecnologia similar a sus predecedores, como trans• nova, TOPAZ y DIAMOND; las fuentes almentacion se han mejorado para permitir el funcionamiento a muy bajas impedancias.

El 50.

2

es un amplificador de dos canales optimizado para funcionar con cargas de 1

Ω

en estereo y 2

Ω

en mono. El 50.

1

es un amplificador de un solo canal optimizado para trabajar con cargas de 1

Ω

(un solo amplificador) o 2

Ω

(dos amplificadores puenteados en un solo canal).

La “Serie 50” utiliza las tecnologias innovadoras de Rockford para conseguir una impresionante calidad de sonido, funcionamiento duradero y alta potencia de salida sobre bajas impedancias. Todo esto son ventajas para los vehiculos de competicion.

U

BICACIÓN DE LOS

A

MPLIFICADORES

Maletero

Monte el amplificador vertical con las altas de refrigeración de arriba a abajo. Es el método correcto para asegurarse la máxima disipación de calor.

Habitáculo

El amplificador montado en el habitáculo funcionara bien en la medida en que se le proporcione ventilación suficiente para refrigerarse. Si piensa en montarlo debajo de un asiento deberá dejar como minimo un espacio de 3cm alrededor del refrigerador.

Instalación

• Por seguridad desconecte el cable de masa de la bateria antes de empezar la instalación.

Terminal B+

El cable de alimentación deberá tener un fusible como máximo a 30cm de la bateria. Prepare los terminales del cable e instale el portafusibles en el vano motor (si la bateria estuviera alli ubicada). Recuerde que toda la instalación debe ser impermeable.

Terminal GND (Masa o negativo)

Prepare un trozo de cable para usarlo como toma de masa. Prepare el chasis rascando toda la pintura y suciedad que pudiera haber hasta dejar la chapa viva. Conecte el chasis a masa con un tornillo.

Terminal REM (Remoto)

Conecte el terminal REM a un punto de 12V con interruptor. Normalmente se usa la salida Remote o de alimentación de antena del Radio Cassette. Si el Radio Cassette no la tuviera o no estuviera disponible se recomienda tomar de la caja de fusibles 12V y colocar un interruptor para asi activar el amplificador.

– 50 –

Operación mono/estéreo

RCA

Input

Unbal.

L (Mono) R

Speaker

+ L –

0

°

-180

°

Gain

Bal.

Pass

Thru

L R

Bal.

Input

E Z - 1 8 0

°

- 0

°

Bridged

Gain

Speaker

– R +

–

+

1

Ω

min.

1

Ω

min.

+

–

+

Speaker

Terminal

+ –

–

Speaker

Terminal

2

Ω

min.

• Los conectores de entrada RCA se conectan a ambos canales derecho e izquierdo

• El conmutador de señal de entrada se colocara en Unbalanced para las entradas RCA

• El conmutador de fase del canal izquierdo estará en 0 grados

• El conmutador de fase del canal derecho estará en 180 grados cuando se requiera operación mono/estéro

• La Ganancia de los dos canales derecho e izquierdo deberán ser exactamente iguales para balancear correctamente el subgrave

• La impedancia minima para cada canal es de 1 Ohm

• La impedancia minima cuando se trabaje en puente será de 2 Ohm

• Deberá seleccionarse una XCard (tarjeta del divisor de frecuencias) de banda completa

• Crossovers pasivos se requieren para operar el amplificador en estereo/mono

– 51 –

ATTENTION: Veuillez lire les instructions suivants pour l'nstallation de ce produit. Ne pas les suivre pourrait causer des blessures ou endommager le véhicule.

I

NTRODUCTION

Rockford Fosgate se distingue en étant le leader mondial de la fabrication d'amplificateurs de haute puissance. Depuis l'introduction du 250m

2

et du 500m, de nouvelles normes en matière de qualité sonore et de flexibilité ont été fixées. Avec l'introduction des modèles “competition” 50.

2

et 50.

1

, ces normes seront à nouveau améliorées. Cette série “50” utilise des technologies similaires à ses prédecesseurs tels que trans• nova, TOPAZ et DIAMOND; ils sont toutefois munis d'alimentations renforcées pour pouvoir alimenter des impédances très basses.

Le 50.

2

est un amplificateur à deux canaux optimisé pour des charges de 1

Ω

stéréo et de 2

Ω

mono. Le 50.

1

est un

amplificateur mono optimisé pour une charge de 1

Ω

(un ampli) ou 2

Ω

(deux amplis 50.

1

pontés ensemble).

La serie “50” utilise les technologies innovatives de Rockford qui lui donne cette impressionante qualité sonore, cette fiabilité et cette incroyable puissance à de basses impédance. Ceci constitue un avantage sérieux pour des véhicules de compétition.

M

ONTAGE

Montage dans le coffre

Monter l'ampificateur verticalement avec les rainures de haut en bas ce qui lui permet de refroidir plus facilement.

Montage dans l'habitacle

Monter l'ampificateur dans l'habitacle ne pose aucun problème, du moment qu'il y ait assez d'air pour le refroidir. Si vous montez l'ampli en dessous de siège, prévoyez 3cm d'air autour du radiateur.

Installation

Pour votre sécurité, déconnectez la borne négative de la batterie du véhicule avant de commencer l'installation.

Terminal B+

Il est impératif qu'il y ait un fusible sur le câble d'alimentation positif le plus près possible de la borne (maximum 30cm).

Préparez les extrémités du câble et installez le porte fusible sous le capot. Les connexions doivent être étanches.

Terminal GND

Préparez une longueur de câble pour la connexion à la masse. Préparez le châssis en grattant la peinture de la surface métallique et nettoyez la saleté et l'huile. Attachez le câble au châssis avec une vis.

Terminal REM

Connectez le fill REM à une commande 12 volts positive de la source. La commande 12 volts est habituellement prise sur la sortie antenne électrique de la source ou la commande accessoire. Si la source ne dispose pas de ces sorties, nous vous recommandons d'installer un interrupteur qui fournira un positif 12 volts au REM de l'ampificateur.

– 52 –

Opération stéréo/mono

(Tri-mode)

RCA

Input

Unbal.

L (Mono) R

Speaker

+ L –

0

°

-180

°

Gain

Bal.

Pass

Thru

L R

Bal.

Input

E Z - 1 8 0

°

- 0

°

Bridged

Gain

Speaker

– R +

–

+

1

Ω

min.

1

Ω

min.

+

–

+

Speaker

Terminal

+ –

–

Speaker

Terminal

2

Ω

min.

• Les entrées RCA sont connectées aux canaux gauche et droit

• L'interrupteur “Signal Input” doit se trouver dans la position

“Unbalanced” pour utiliser l'entrée RCA

• L'interrupteur “Left Phase” doit se trouver dans la position “0

°

”

• L'interrupteur “Right Phase” doit se trouver dans la position “180

°

” pour operation en tri-mode

• Les gains des canaux gauche et droit sont réglés de la même manière pour équilibrer le subwoofer

• L'impédance de chaque canal devrait être de minimum 1

Ω

• L'impédance du canal mono devrait être de minimum 2

Ω

• Les XCards sont introduites sur fall range

• Il est conseillé d'utiliser les filtre passifs lorsqu'on fait fonctionner l'amplificateur en tri-mode

• NE connecter AUCUN des câbles HP à la masse au risque d'un fonctionnement instable.

• Les filtres passifs sont nécessaires pour une utilisation correcte stereo/mono

– 53 –

Bitte lesen Sie diese Gebrauchsanleitung zuerst sorgfältig durch. Das kann Sie vor dem falschen Einsatz, Ausfallen oder sogar

Beschädigung des Produktes oder Ihres Fahrzeuges schützen.

E

INLEITUNG

Rockford Fosgate ist bekannt als einer der weltweit führenden Hersteller von “high performance” Auto-HiFi Versstärkern.

Spätestens seit der Vorstellung der 250m 2 and 500m haben wir neue Ma

β stäbe für hervorragende Klangqualität und mehr

Flexibilität gesetzt. Um so schwerer fiel es uns, diesen Level nochmals zu erhöhen. Heute sind wir stolz, darauf Ihnen die 50.

2 und 50.

1

“competition” – Verstärker, vorstellen zu können. Die “50 ziger Serie” vereinigt neueste Technologien wie trans• nova, TOPAZ und DIAMOND, mit extrem laststabilen Netzteilen, um auch an niedrigen Impedanzen arbeiten zu können.

Die 50.

2

ist ein 2-Kanal Verstärker der an einer last von 1 Ohm Stereo und Mono gebrückt an 2 Ohm optimale Leistung zeigt. Die 50.

1

ist eine Endstufe die optimal an 1 Ohm arbeitet (single amp) oder beim Zusammenschlie

β en von zwei

Verstärkern (ein Paar 50.

1

, gebrückt an eine Lautsprecherlast) an 2 Ohm.

Die “50 zieger Serie” verwendet Rockford's innovative Technologien für einzigartige Klangqualität, zuverlässige Arbeitsweise und unendliche Leistung an niedriger Impendanz. Ihr Vorteil beim Bau von ernstzunehmenden Wettberwerbs-Fahrzeugen!

E

INBAUORT

Im Fahrzeugkofferraum

Der vertikale Einbau der Endstufen, das bedeutet, da

β

die Kühlrippen von oben nach unten verlaufen, gibt dem Verstärker die beste Kühlung.

Auf der Beifahrerseite

Sollte der Verstärker auf der Beifahrerseite montiert werden, so ist es sehr wichtig, für eine ausreichende Kühlung zu sorgen.

Sollte der Verstärker z.B. unter dem Beifahrersitz montiert werden, sollte dem Kühlkörper mindestens ein Luftspalt von 3cm bleiben, um so für eine ausreichende Kühlung zu sorgen.

Einbau

Zur Sicherheit klemmen Sie den Negativ-Pol der Batterie während des gesamten Einbaues ab.

B+ Anschlu

β

Die Plus-Leitung mu

β

ca. 40cm nach dem Plus-Pol der Batterie abgesichert sein. Preparieren Sie die Kabellängen und montieren Sie den Sicherungshalter im Motorraum. ALLE Verbindungen müssen wasserdicht sein.

GND Anschlu

β

Preparieren Sie Ihr Kabel für die Negativ Leitung (Erdung). Preparieren Sie die Anschlu

β stelle des Erdungskabels, indem Sie das Metall gründlich reinigen und vom Lack befreien. Befestigen Sie nun die Erdung an dieser Stelle mit einer Schraube.

REM Anschlu

β

Verbinden Sie das Ein-und Ausschaltkontroll-Kabel mit Ihrem Radio (12 Volt positiv). Normalerweise verwenden Sie hierfür die Ant.-Remote Ihres Radios oder ein eigens dafür vorgesehenes Kabel (Amp-Remote). Sollte Ihr Radio diesen Anschlu

β nicht besitzen, so verwenden Sie ein 12 Volt Spannung, die Sie durch eine Schalter ein - und ausschalten können.

– 54 –

Stereo/Mono Betrieb

RCA

Input

Unbal.

L (Mono) R

Speaker

+ L –

0

°

-180

°

Gain

Bal.

Pass

Thru

L R

Bal.

Input

E Z - 1 8 0

°

- 0

Bridged

°

Gain

Speaker

– R +

– +

1

Ω

min.

1

Ω

min.

+

–

+

Speaker

Terminal

+ –

–

Speaker

Terminal

2

Ω

min.

• Chinch Eingänge des rechten und linken Kanales anschlieben

• Signal Eingangsschalter auf “unbalanced” für den Betrieb mit

Chinch-Kabel stellen

• Linken Phasen Schalter auf 0

°

stellen

• Rechten Phasen Schalter auf 180

°

stellen für den Stereo/Mono

Betrieb

• Die Lautsprecher-Phase des rechten Kanales umkehren, um eine

Phasenkorrektur zu erreichen

• Gain Regler des linken Kanales angleichen, um die Lautstärke des

Subwoofers einzustellen

• Impendanz für jeden Kanal sollte minimum 1 Ohm betragen

• Impendanz im Brückenbetrieb sollte minimum 2 Ohm betragen

• XCard sollte auf Full Range gesteckt werder

• Passive Frequenzweichen werden für korrekte Stereo/Mono

Operationen benötigt

– 55 –

PREGO LEGGERE LE SEGUENTI ISTRUZIONI PER L'INSTALLAZIONE DI QUESTO PRODOTTO, IL NON SEGUIRLE POTREBBE

RISULTARE SERIAMENTE DANNOSO PER LA PERSONA O PER IL VEICOLO.

I

NTRODUZIONE

Rockford Fosgate é conosciuta per essere il leader indiscusso nella realizzazione di amplificatori ad elevatissime prestazioni.

Con l'introduzione dei modelli 250m

2

e del 500m Rockford ha stabilito dei nuovi standard di mercato per qualitá timbrica e versatilltá. Con l'introduzione dei modelli “competizione” 50.

2

e 50.

1 questi standard sono arrivati a livelli ancora superiori.

La “serie 50” impiega le stesse tecnologie dei propri predecessori, come trans• nova, TOPAZ e DIAMOND, tuttavia lo stadio di alimentazione migliorato consente di pilotare carichi ad impedenza molto piú bassa.

Il 50.

2

é un amplificatore a due canali ottimizzato per pilotare carichi di 1

Ω

stereo e di 2

Ω

in mono. Il 50.

1

é un amplificatore ad un canale (mono) ottimizzato per pilotare carichi di 1

Ω

(singolo amplificatore) o di 2

Ω

a ponte (due amplificatore ponticellati funzionanti sullo stesso sistema di altoparlanti).

La “serie 50” impiega tutte le piú innovative tecnologie proprie di Rockford per ottenere una superba qualitá timbrica, grande affidabilitá, ed elevatissima potenza su carichi molto bassi. Tutto questo á di grande beneficio per le auto che ambiscono a vincere le gare.

D

OVE

P

OSIZIONARLO

Nel Bagagliaio

Montando l'amplificatore su una superficie in verticale con le alette direzionate dall'alto verso il basso si garantirá un miglior raffreddamento dell'amplificatore.

Nell'abitacolo

Montare l'amplificatore nell'abitacolo si avrá un funzionamento regolare se si garantisce un flusso d'aria sufficiente. Per l'installazione sotto un sedile, é necessario avere uno spazio di almeno 3 cm attorno a tutto l'amplificatore.

Installazione

Per sicurezza, scollegare il polo negativo della batteria dell'auto prima di iniziare l'installazione.

Terminale B+

(cavo positivo)

Il cavo positivo deve essere protetto da un fusibile a non piú di 45 cm dalla batteria. Terminare il cavo e installare il fusibile nel vano motore. Tutte le connessioni devono essere a prova d'acqua.

Terminale GND

(cavo negativo)

Decidere la lunghezza del cavo e terminarlo. Preparare la massa grattando la vernice dal telaio dell'auto ed eliminando tracce di olio o sporco. Fissare il cavo di massa al telaio con una vite.

Terminale REM

(Consenso di accensione)

Collegare il cavo REM ad un positivo presente solo ad autoradio accesa (normalmente il cavo pilota dell'antenna elettrica o il cavo accessori dell'autoradio). Se la sorgente non dovesse essere equipaggiata con queste uscite, la soluzione raccomandabile é di inserire un interruttore su un cavo positivo e connettersi all'amplificatore.

– 56 –

Stereo/Mono Operation

RCA

Input

Unbal.

L (Mono) R

Speaker

+ L –

0

°

-180

°

Gain

Bal.

Pass

Thru

L R

Bal.

Input

E Z - 1 8 0

°

- 0

°

Bridged

Gain

Speaker

– R +

– +

1

Ω

min.

1

Ω

min.

+

–

+

Speaker

Terminal

+ –

–

Speaker

Terminal

2

Ω

min.

• RCA inputs non sono collegati ad entrambi, i canli destro e sinistro

• Interruttore di segnale input selezionato per il non bilanciamento per l'input RCA

• Fase sinistra dell'interruttore posizionata su 0

°

.

• Fase destra dell'interruttore posizionata su 180

°

per l'operazione stereo/mono

• Tutta la polaritá dell'altoparlante del canale destro é invertita per correggere il segnale di fase

• Gain per i canali destro e sinistro posizionati ugualmente per bilanciare i subwoofer

• Impedenza per ogni canale deve essere minimo 1

Ω

• Impedenza per i canali a ponte deve essere minimo 2

Ω

• XCard é posizionata per tutto il range

• Crossover passivi sono indispensabili per un corretto funzionamento stereo/mono

– 58 –

MAN-1528-B

10/97

MADE IN THE USA

This product is designed, developed and assembled in the USA by a dedicated group of American workers. The majority of the components used in the construction of this product are produced by American companies. However, due to the global nature of their manufacturing facilities and the loudspeaker parts industry in general, some parts may be manufactured in other countries.

Rockford Fosgate

Rockford Corporation

546 South Rockford Drive

Tempe, Arizona 85281 U.S.A.

In U.S.A., (602) 967-3565

In Europe, Fax (49) 4202-9750-50

In Japan, Fax (81) 559-79-1265