Owner's manual

Amplifier provide high-performance sound reinforcement for you mobile audio equipment. it's versatility enables compatibility with optional Equalizers, Frequency Dividing Network

Crossovers, and other audio processors in a customized system. The Multi-Mode bridging capabilities allow flexibility in hosting several different speaker configurations.

To achieve optimum performance, it is highly recommended that you read this Owners

Manual defore beginning installation.

-

2 OHM STABLE OPERATION FOR MAXIMUM EFFICIENCY

STATE-OF-THE-ART HEAT SINK FOR SUFFICIENT POWER DlSSiPATlON

GOLD PLATED LOW LEVEL INPUTS AND SCREW TERMINAL

CONNECTIONS FOR POWER, GROUND AND SENSING

FLOATING GROUND INPUTS

INPUT SENSlTiVllY CONTROL FOR PERFECT MATCH WlTH CAR STEREO

REMOTE TURN-ON WlTH LED INDICATOR

VARIABLE LINE LEVEL INPUT ADJUSTMENT

SOFT TURN-ON CIRCUIT

CIRCUIT OVERLOAD PROTECTION

WARNING

High powered audio systems in a vehicle are capable of generating "Live Concert" high levels of sound pressure. Continued exposure to excessively high volume sound levels may cause hearing loss or damage. Also, operation of a moter vehicle whiie listening to audio equipment at high volume levels may impair your ability to hear external sounds such as; horns, warning signals, or emergency vehlcles. thus constituting to a potential traffic hazard.

In the interest of safety, Consumer Electronics recommends listening at lower volume levels whiie driving.

w

Before beginning the installation, consider the following:

- a. If you plan to expand your system by adding other components sometime in the future. ensure adequate space is left. and cooling requirements are met. b. Should you use high or low inputs?

Your Amplifier has been designed to accept either High-Level (speaker outputs from your radio) or Low-Level (Pre-Amp outputs from your radio) signal source.

If your radio/source is equipped with Pre-Amp outputs, it is possible to utilize them to drive the Amplifier and connecting (Amplifier) to the 2 rear speakers. Then, use the built-in power of your radio to drive the 2 front speakers.

NOTE:

DISTORTION

LEVEL IS CONSIDERABLY LOWER FROM PRE-AMP (LOW LEVEL) OUTPUTS, THAN SPEAKER

(HIGH LEVEL) OUTPUTS.

C. Are your components matched? The peak power rating of your speakers must be equal or greater than the Amplifier's. They also must be 2-8 Ohms llmpedance (This information as normally printed on the speaker magnet). d. Consider both the length of your leads, and routing when determining the mountlng location. Pre-Amp input Jacks requir a length of high quality shielded male to male RCA patch cord.

The mounting position of your Amplifier will have a great effect on its ability to dissipate the heat generated during normal operation. It has ample heat sink for heat dlssipation, and also designed with a thermal shut-down (for heat protection) circuit, making air to be directed over the cooling fins will improve heat dissipation dramatically. DO NOT enclose the amplifier in a smaii box of cover it so that air cannot flow around fins.

Temperatures in car trunks have been measured as high as 175'F(80'c) in the summer time. since the thermal shut-down point for the Ampiifier is 185'F(85'c) it is easy to see that it must be mounted for maximum cooling capability. To achieve maximum advantage of convection ais flow in an enclosed trunk, mount the amplifier in a vertical position, on a vertical surface.

Cooling requirements are considerably relaxed when mounting Inside the passenger compartment since the driver will not often allow temperatures to reach a critical point.

Floor mounting under the seat is usually satisfactory as long as there is at least 1 inch(2cm) above the Amplifier's fins for ventilation.

' a. Select a suitable location that is convenient for mounting, is accessible for wiring, and

.4

has ample room for air circulation and cooling. b. Use the amplifier as a template to mark the mounting holes. Remove the Amplifier and drill 4 holes, use extreme caution, inspect underneath surface before drilling. c. Secure the Amplifier using the screws provided.

A. CONNECTING THE POWER (Fig. 1)

CAUTION:

AS

A

PRECAUTION. IT IS

ADVISABLE TO

DISCONNECT

THE

VEHICLE'S

BATERY

BEFORE

MAKING CONNECTION

TO THE

+I2

SUPPLY WIRING.

418 GAUGEOhicker if planning for additional Amplifiers) wire is recommended both the power and ground wires. 12 Gauge, for the remote ture-on wire. Both types are available at most Mobile Audio Dealers or Installation Shops.

(I) GROUND: To Vehicle Chassis

To avoid unwanted ignition noise caused by ground loops, it is essential that the

Amplifier be grounded to a clean, bare, metal surface of the vehicles chassis.

NOTE:

GROUND WIRE SHOULD NOT BE EXTENDED MORE THAN 3

FT.(l

METER).

(2) +12Volt(Fused) Constant Power: To Battery

(+)

Due to the power requirements of the Amplifier, this connection should be made directly to the positive

(+) terminal of battery. For safety measure. install an in-line Fuse

Holder (not included) as close to the battery positive

(+) terminal as possible with an ampere rating; not to exceed total value of fuses in Amp.

Y

(3) Remote Turn-One Input : To Power Antenna output of Car Stereo

This Amplifier is turned "0N"remotely when the vehicle's stereo is turned 'ON"

NOTE:

IF YOUR RADIO DOES NOT HAVE

+I2

WHEN

ME

RADIO IS TURNED

ON.

THE 'REM' TERMINAL

ON THE AMPLIFIER CAN BE CONNECTED TO

VEHICLE'S ACCESSORY CIRCUIT THAT

IS LIVE

WHEN THE KEY IS

'ON-.

Fig 1

B. LOW LEVEL INPUT

Use a pair of shielded stereo audio cables with RCA type jacks. Most trunk-mount amplifier installations require 20-foot RCA cables. Most under-seat and pickup truck installations use l l f o o t cables.

Connect the left channel RCA output from your receiver or CD player to the RCA input on the amplifier labeled L. Connect the right channel RCA output from your receiver or CD player to the RCA input on the amplifier labeled R.

C. BASS BOOST

By using the bass boost function the deepest bass notes at 45Hz are emphasized.

D. CONNECTING HlGH LEVEL INPUTS (Fig.2)

NOTE:

DO NOT CONNECT THESE HlGH LNEL INPUT WIRES IF YOU ARE USING THE LOW LNEL INPUT RCA JACKS.

CAUTION

NOTE THAT

ONLY

PoslnvE (+)WIRES ARE

USED. DO NOT CONNECT

120

SIGNM O O U N D

PA4-240

PDWER INPUT

SIGWAL GROUND

Fig 2 b

-6-

E. CONNECTING LOW LEVEL INPUTS (RCA Jacks)

NOTE:

-

DO NOT USE IN CONJUNCTION WlTH HIGH LEVEL INPUT WIRES.

Wire routing is CRITICAL for NOISE FREE PERFORMANCE. Obselve the following:

1. Always use high quality RCA type shielded cables.

2. Always use the shortest length possible. If the cable is too long, make an "S" type loop (not a coiled loop) in the center of the cable to take up any excess.

3. Never cut the shielded cable and re-splice it.

4.

Never route any Amplifier input cables near or parallel to speaker outputs. high energy ignition wires, or near computer controlled ignition circuit units Computer units may be found behind or under the dash panel in late model cars).

Thls METER LAMP will illuminate when the amplifier is turned "ON". If It falls to illuminate, check the power connections to the Amplifier and fuses.

PROTECTION CIRCUIT

Should the Amplifier be "SHORT CIRCUITED" overloaded or overheated. the protect circuit will "SHUT-DOWN" the Amplifier.

CAUTION

THIS AMPUFIER IS DESIGNED TO OPERATE WlTH A MINIMUMLOAD IMPEDANCE OF 2 OHMS IN STEREO,

OR 4 OHMS IN MONO )BRIDGED, MULTI-MODE) CONFIGURATION.

SUBJECTING TO IMPEDANCE'S LOWER THAN RECOMMENDED, MAY CONSTITUTE TO POTENTIAL DAMAGE TO THE

MOSFET POWER SUPPLY. FOLLOW INSTRUCTIONS ON SECTION. 'WIRING CONNECTIONS' FOR FURTHER

INFORMATION.

In order to achieve maximum signal-to -noise performance, this control adjusts the signal level from your Car Stereo/Source, to match the Amplifier's sensitivity. It is NOT a volume control.

To adjust, proceed as follows: a. Set INPUT LEVEL Control at mid-point.

b.

Listen for audible distortion as you increase the Car Stereo VOLUME control. If none

Is heard, turn the adjustment level control toward to "MAX" in stages, until the onset of audible distortion is heard, then decrease to "MIN" level prior to the immediate point of audible distortion. c. If distortlon is immediately heard, turn control to "MIN" until the sound is clear. w

NOTE:

NOT PERFORMING ABOVE ADJUSTMENT PROCEDURE AND/OR SIMPLY SEmNG THIS CONTROL AT OR NEAR

'MAX'

POSITION. MAY INDUCE ELECTRICAL AUDIO NOISE INTO

ME

SYSTEM.

Fig 3

w

I

SYMPTOMS

I

CHECK POINTS

NO SOUND

In the power

METER LAMP illuminated?

AMP NOT

SWITCHING

IN ONE

CHANNEL

TURNING OFF

MEDIUMIHIGH

VOLUME

PROTECTION

LAMP ON

1

CURE

1

Check fuses in amplifier.

Be sure Turn-on lead is connected

Check signal leads. Check gain control.

Check TunerJDeck volume level.

Clean contacts on fuse holders.

Check for speaker short or amplifier overheating.

Repair power wire or connections.

Is the Diagnosic

LED illuminated?

No power to power wire

No power to remote wire with receiver on

Fuse broken

Check Speaker Leads

Check Audio Leads

Check speaker load impedance

Temperature shutdown

Speaker wires short circuit

Check connections to radio.

Check fuse

Inspect for short circuit or an open connection.

I

Reverse Left and Right RCA inputs to determine if it is occurring before the amp.

Be sure proper speaker load impedance recommendations

1 are observed.

(If you use an ohmmeter to check speaker resistance, please remember that DC resistance and

AC impedance may not be the same.)

Turn radio down

Separate speaker wires and insulate

investigate the layout of you automobile thoroughly before drilling or cutting any holes.

Take care when you work near the thanks, lines, or hydraulic lines, and electrical wiring.

Don't mount this system so that the wire connections ate unprotected are subject to pinching or damage from nearby objects.

The 12V DC power wire must be fused at the battery positive terminal connection.

Before making or breaking power connections at this system power terminals. disconnect the +12 V wire at the battery end.

Confirm your radio/cassette player and/or other equip is turned off while connecting the input jacks and speaker terminals. if you need to replace the power fuse, replace it only with a fuse identical to that supplied with the system. Using a fuse of different type or rating may result in damage to this system which isn't covered by the warranty.

-

-

w

FEATURES AND SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE.