AudioBahn A4KDN Specifications

AudioBahn A4KDN Specifications
QUALITY, RELIABILITY, & PURE BLISS
4000 WATT RMS CLASS D
COMPETITION AMP
A4KDN
OPERATING INTSTRUCTIONS
PLEASE RETAIN MANUAL FOR FUTRE USE AND REFERENCE
The Audiobahn Way
To bring the product to market that excites the consumer through
sound and vision from an orientation of integrity and customer service. We
make you look as good as you sound. We strive to take car audio to an
extreme the world has never seen, and a world that never stops evolving.
Audiobahn was established in 1997 with one long-term goal in mind,
"Build it Bigger, Badder, & Better, and the people will take notice!" We
back this statement with an engineering team that has brought home several
Innovations, Design & Engineering Showcase Awards, and a marketing team
from around the world that spends countless hours developing our no
compromise products to satisfy the most discriminating enthusiasts.
Our global manufacturing facilities feature ISO9002 ratings (the highest
level of quality control awarded in the electronics manufacturing industry), fully
robotic assembly lines and a state of the art, California based R & D
laboratory.
Due to overwhelming response from our competitors, and our goal to
participate in even more events this year, we created *"TEAM AUDIOBAHN."
This organization is designed to create a support network along with shirts and
perks for team members. "TEAM AUDIOBAHN" is not only for the diehard
competitor, but also for anyone that loves car audio as much as we do. With
four levels of play, one is right for you to get started in the Audiobahn family.
Our Technical Department and entire staff look to strive above and
beyond the rest of the pack by going that extra mile to help you out. Whether
you happen to be a veteran competitor, or a beginner car audio enthusiast
who does not know a voice coil from a spider. We are all her to help you get
the best system you can with what you have.
Judge for yourself, and remember what it's all about, "If it's not
Bigger, Badder & Better, it's not Audiobahn." If audio is your life,
Audiobahn is the brand for you! We make you look as good as you sound.
People never stop trying to get the best product, so we will never stop making
it.
*To learn more about "TEAM AUDIOBAHN" please give us a call, see our website at
www.audiobahn.com, or email us at [email protected] to learn about all the details.
Table of Contents
Table of Contents
Introduction
3
Features and Specifications
4
Control and Functions
5-10
Planning / Mounting Your System
11
Wiring Diagram
12
Bridging 2 Amplifiers
13-14
Adjusting and Tuning
15
Troubleshooting
16
Warning and Disclaimer
17
Warranty
18-19
2
Introduction
Dear Customer,
Congratulations on your purchase of the worlds finest brand of car audio products. Here at
Audiobahn Inc. we are devoted to making our musical reproduction the vert best, and we are
pleased you have chosen 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 Audiobahn product installed by an
Authorized Audiobahn Dealer, as we provide specialized training through our Audiobahn
Installer Training Programs. Please read your warranty, keep your receipt, and original carton
for possible future use.
To get a free brochure on Audiobahn products in the US call (714) 988-0400 or e-mail us at
[email protected]
WARNING
Continuous exposure to sound pressure levels over 100dB may cause permanent
hearing loss. High powered autosound systems may produce sound pressure levels
well over 135dB. Need we say more! Use common sense.
If after reading this manual you still have questions regarding your product, we
recommend that you see your nearest Audiobahn Dealer. A list of Authorized
Audiobahn Dealers can be found on our web page. If you need further assistance, feel
free to call us at (800) 488-8595 and ask for the Technical Department. Be sure to have
the model number, date of purchase, and invoice number available when you call.
The model number can be located on the outside of the carton. Record this in the space
provided below along with the date of purchase. It is a good idea to keep your receipt
with this as you will need it in the case of needing a warranty, repair service or
exchange.
Model Number:___________________ Date of Purchase: _____________________
3
Features and Specifications
> Class D MOSFET Amplifier
> Multi-Stranded Power Supply Toroids
> Double-Sided Glass Epoxy Circuit Board
> Remote Bass Control with BLUE Backlight Knob
> Large Display Volt meter with BLUE Illumination
> 4-Way protection circuitry: Thermal, Short circuit, Over load , and DC Offsct
> Dual Cooling FANS
> Cobalt BLUE Illumination
> Chrome Flame FAN Grills
> High Gloss Chrome-Plated Finish
> Nickel-plated Block Terminals
> RMS Power , INTO 4 Ohms
2000W Mono
> RMS Power , INTO 2 Ohms
3000W Mono
> RMS Power , INTO 1 Ohms
4000W Mono
> THD at 1 Watt , 4 Ohm
0.05%
> Input sensitivity
200mV-8V
> Frequency response, at 1 Watt, 4 Ohm
15Hz~150Hz (+/-3dB)
> Variable Low Pass Filter
50Hz~150Hz, 24dB/Octave
> Variable Subsonic Filter
15Hz~40Hz, 24dB/Octave
> Variable Bass Boost Control
0~ +18dB
0~180 degree
> Phase Shift Control
> Input Impedance
10K Ohm
> Source Voltage (Automobile battery)
11~16V DC
> Maximum DC current (1 Ohm, 1% THD +n)
456 amperes DC
11.97" x 2.76" x 23.54"
> Dimensions : WxHxL
NOTE:
As the A4KDN amplifier is a competition grade Class D Amplifier, no
fuses are included on the amplifier. It is recommended to fuse the
power wire no further then 18” away from the battery. The fuse rating
you need to use will vary depending on the setup of your system,
impedance the amplifier is running, and use of the system.
4
Controls and Functions
5
Controls and Functions
1. Bass Boost Gain Remote Control
This plug connects the amplifier and the remote bass knob using the supplied cable.
2. Input Sensitivity Control
This control adjusts the amplifier's input sensitivity. The input sensitivity is variable from 200 Millivolts to 8
volts. Turning clockwise increases sensitivity. Turning counterclockwise decreases sensitivity. This knob
is not a volume control for the amplifier. The amplifier can be driven to full power with a wide range of
input signals. A lower signal level will require increased sensitivity to reach full power. A higher signal
level will require decreased sensitivity.
3. Low level Input RCA Jacks
These inputs are for signal cables from the source. Always use high quality, shielded RCA cables.
6
Controls and Functions
4. Low Level LINE OUT RCA Jacks
The LINE OUT allows you to build a multiple amplifier system without having to use splitter cords or
Y-adapters to distribute the signal. Now it is simply a matter bringing one set of RCAs into the first
amplifier, then using the line out RCA jacks as the feed to the next amplifier.
5. Bass Boost Control
By using the bass boost function, bass notes at 45Hz are emphasized as much as 18dB.
6. Phase Shift Control
Allows you to change the phase of your subwoofer from 0 to 180 degrees to help compensate for timing
differences between drivers.
7
Controls and Functions
7. Low-Pass Filter Control
For use as a dedicated subwoofer channel, set the filter switch to the "LPF" (Low Pass Frequency).
Adjust the variable crossover frequency with control knob as desired. The amplifier input circuit filters out
everything above 50Hz ... 150Hz (dependant on the adjustment of the frequency control), so only the
lowest bass notes are amplified.
8. Sub Sonic Control
The sub sonic control will cut all frequencies below what it is set to from going to your sub(s). This will
prevent your subs from playing any frequencies that may harm them.
9. Bridged Connection
This is the connection used to bridge 2 two of the same class D amplifiers together. Later in this manual it
is explained how to bridge the amps and what settings to use.
CLIPPING INDICATOR
Included on the front of this amplifier is a clipping indicator. You will
notice that the lights on the front of the amplifier light up blue. This
happens during normal good operation. If the light start to turn red, it
indicates that the amplifier is clipping. This can lead to permanent
damage to both your amplifier and any speakers hooked up to it.
Clipping can be caused by low voltage supply to the amplifier, having
the gain / level or bass boost setting adjusted to high, or too low of a
ohm load causing the amplifier to overdrive itself.
8
Controls and Functions
10. Speaker Terminals
These terminals are used to wire your subwoofer(s) to the amplifier.
11. B- Terminal (Chassis Ground)
To avoid unwanted ignition noise caused by ground loops, it is essential that the amplifier be grounded to
a clean, bare, metal of the vehicle's chassis. This metal surface should be solid, strong and connected
directly to the frame of the car.
Note: GROUND WIRE SHOULD NOT BE EXTENDED MORE THAN 3 FEET (1 METER)
12. B+ Terminal (Battery Positive)
GROUND
(CHASSIS GROUND)
Due to the power requirements of the amplifier, this connection should be made directly to the positive (+)
terminal of the battery. For safety purposes, install an in-line fuse holder (not included) as close to the
battery positive (+) terminal as possible with an ampere rating not to exceed the total value of fuses in the
amplifier.
9
Controls and Functions
13. Remote Turn-on Input
The remote terminal needs to be wired to the car's stereo or source unit remote turn on wire. This
amplifier is turned on remotely when the vehicle's stereo is turned on.
NOTE: iF YOUR RADIO DOES NOT HAVE A +12 VOLT OUTPUT LEAD WHEN THE CAR IS TURNED
ON, THE "REMOTE" TERMINAL ON THE AMPLIFIER CAN BE CONNECTED TO THE VEHICLE'S
ACCESSORY CIRCUIT THAT IS LIVE WHEN THE KEY IS TURNED ON.
14. LED Indicators
PWR (Power): This BLUE LED will illuminate when the amplifier is turned on. If it fails to illuminate, check
the fuses and power connections to the amplifier.
PROT (Protection): The amplifier protection circuitry will disable the amplifier if there is an imput overload,
short circuit, or extremely high temperature conditions are detected. When the protection mode is in
operation, the LED indicator on the side panel will be illuminated RED, indicating the amplifier has gone
into a self-preservation mode.
If you observe that the protection LED is lit, please check the system carefully to determine what has
caused the protection circuit to engage. The amplifier can be reset by turning the remote power off and
then on again. If the amplifier shut down due to a thermal overload condition, please allow time for the
amp to cool down before restarting. If the amplifier shut down because of an input overload or short
circuit, be sure to repair these conditions before attempting to power up the amplifier again.
10
Planning and Mounting Your System
Planning Your System
Before beginning the installation, consider the following:
a. If you plan to expand your system by adding other components sometime in the
future, ensure that adequate space is left, and cooling requirements are met.
If your radio/source is equipped with Pre-Amp outputs, it is possible to utilize them
to drive an 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.
b. Are your components matched? The RMS power rating of your speakers must be
equal or greater than the amplifier's. They also must be 1-8 Ohms impedance
(this information is normally printed on the speaker magnet).
c. Consider both the length of your leads, and routing when determining the mounting
location. Pre-Amp input Jacks require a length of high quality shielded male to male
RCA patch cord.
Mounting Your System
The mounting position of your amplifier will have a great effect on its ability to dissipate
the heat generated during normal operation. It has an ample heat sink for heat
dissipation, and also is designed with a thermal shut-down (for heat protection) circuit,
having enough air directed over the cooling fins will improve heat dissipation dramatically.
DO NOT enclose the amplifier in a small box or cover it so that air can not flow around
the fins. Temperatures in car trunks have been measured as high as (155 F) in the
summer time. Since the thermal shut-down point for the amplifier is (158 F) it is easy
to see that it must be mounted for maximum cooling capability. To achieve the maximum
advantage of convection air flow in an enclosed trunk, mount the amplifier in a horizontal
position. Cooling requirements are considerably relaxed when mounting inside the
passenger compartment since the driver will not allow temperatures to reach a critical
point. Floor mounting under the seat is usually satisfactory as long as there is at least 1
inch (2.54 cm) above the amplifier's fins for ventilation.
a. Select a suitable location that is convenient for mounting, accessible for wiring, and
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 holes. Use extreme caution. Inspect underneath the surfaces before drilling!
c. Secure the amplifier using the screws provided.
CAUTION: Before connecting any wires to the amplifier, disconnect the ground lead from
the battery. Leave the ground lead disconnected until you are done wiring the
amplifier.
11
Wiring Diagram
12
BRIDGED
Master
BRIDGED
Slave
HEAD UNIT
Bridging 2 Amplifiers
IF BRIDGED SWITCH POSITION IS ON SLAVE, ALL CONTROLS ARE NON-FUNCTIONAL.
ALL CONTROLS ARE NOW CONTROLLED BY THE MASTER AMPLIFIER.
DES. 423,503
13
Bridging 2 Amplifiers
When bridging the amps together follow these wiring instructions:
1. Positive (+) of the MASTER amp goes to Positive (+) of the sub
2. Positive (+) of the SLAVE amp goes to the Negative (-) of the
sub
3. Connect the Negative (-) terminals of both amps together
US 6,656,000B2
14
Adjusting and Tuning
ADJUSTING THE GAIN / LEVEL SETTING
Below you will find information on adjusting the amplifiers gains. Adjusting the gain correctly is essential to
proper operation of the amplifier. If the gain is not adjusted properly it can and will lead to damage of
the amplifier and connected speakers and will void your MANUFACTURER WARRANTY. The gain on
an amplifier is not a volume control. It is a signal level setting that tells the amplifier how strong of a signal is
coming from the head unit. Your amplifier has an input sensitivity of 200mV-8V. The minimum setting is 8V
and the maximum setting is 200mV. Minimum meaning the head unit or processor has an 8V output and the
maximum meaning it has a 200mV output.
When using Low-Level (RCA) inputs you MUST know what the pre-out or line-out voltage of your head unit
is rate din Volts. This is not the wattage rating. This can be found in the manaul of the head unit or by
contacting the manufacturer. If you are using a line-driver or another type of processor that adjusts the output
voltage of the signal to the amplifier you will nee dto know what the output is adjusted to. the gain on the
amplifier needs to be set proportionately to th pre-out or line-out voltage rating of the head unit or processor.
If the signal strength is 4V then the gain would be adjusted to about 45-50%. Below is a list of commonly
found voltage ratings and their appropriate gain adjustments. When adjusting the gains you want to start with
the bass boost setting on the amp set to minimum and bass adjustments on the head unit or processor are
set at 0 or flat. As these other settings for bass adjustments are increased, the gain setting will need to be
adjusted lower.
_ 70%
2V >
_ 45%
4V >
_ 32.5
5V >
>
8V _ 5% (Bass boost must be left at minimum on the amp and 0 or flat on the head unit or processor)
_ Can not be used with this amplifier
10V >
If your amplifier includes Hi-Level (speaker wire) inputs and you are using them for the audio signal
connection, please use the below steps to adjust the amplifier. Start with a song with good bass that you
know very well.
1. Use a screwdriver to turn GAIN (8V/0.2V) fully counterclockwise to 8V
2. Turn the auto sound system's volume control to about 3/4 of its full range. Any higher normally leads to the
signal being distorted.
3. Turn up the amplifiers gain / level control until the sound begins to distort, then immediately gain / level
down to a point just before where the distortion began.
4. Adjust the auto sound system's volume control to a comfortable listening level and you are good to go.
Note: The steps to adjusting the gain / level control need to be repeated when you adjust any bass boost
settings on the amplifier, processors or significantly on the head unit. Adjusting bass boost settings
significantly without adjusting the gain / level can lead to a distorted signal and damage to the amp and
speakers.
IMPORTANT NOTE: If you should have any questions concerning the installation or
settings on your amplifier or are unsure of anything discussed in this manual, please
contact out Technical Support department at 1-800-488-8595 for help. It is much
better to take 5 minutes today to get it right then to adjust the settings incorrectly and
have a problem with your amp or speakers.
15
Troubleshooting
SYMPTOMS
NO SOUND
AMP NOT
SWITCHING
ON
CHECK POINTS ��
�
CURE
Is the power
LED illuminated ?
( NO )
Check fuses in amplifier.
Be sure Turn-on lead is connected
Check signal leads. Check gain
control.
Check Tuner/Deck volume level.
Clean contacts on fuse holders.
Is the Diagnostic
LED illuminated ? ( YES )
Check for speaker short or
Amplifier overheating.
No power to power wire
Repair power wire or connections.
No power to remote
wire with receiver on
Check connections to radio.
Replace fuse.
Fuse broken
Inspect for short circuit or an
open connection.
NO SOUND
IN ONE
CHANNEL
Check Speaker Leads
AMP
TURNING OFF
MEDIUM/HIGH
VOLUME
Check speaker load
impedance
Be sure proper speaker load
impedance recommendations
are observed.
(If you use an ohmmeter to check
speaker resistance, please
remember that DC resistance and
AC impedance may not be the
same.)
STATUS
LAMP ON
Temperature shut down
Turn radio down
Check Audio Leads
Speaker wires short
16
Reverse Left and Right RCA inputs
to determine if it is occurring
before the amp.
Separate speaker wires and
insulate
Technical Assistance(800)488-8595 /[email protected]
Warning / Disclaimer
WARNING
Investigate the layout of your automobile thoroughly before drilling or cutting any holes.
Take care when you work near the gas tanks, lines, hydraulic lines, and electrical wiring.
Do not use the power amplifier unmounted. Attach the system securely to the automobile
to prevent damage, particularly in the event of an accident. Do not mount the system
so that the wire connections are unprotected or 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 the system power terminals,
disconnect the +12V wire at the battery end. Confirm your radio/head unit and/or other
equipment 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 is not covered by the warranty.
Disclaimer
Specifications are subject to change with out notice.
For the most updated Specifications call Audiobahn,
your local Authorized Audiobahn Dealer,
or check the Audiobahn website.
www.audiobahninc.com
17
Technical Assistance (800)488-8595 /[email protected]
Warranty
Audiobahn Consumer
Product Warranty Policy
Audiobahn products are manufactured with the highest quality components and some of
the most advanced technology available. Because of this, we recommend that you have
your new products installed by an Authorized Audiobahn Dealer.(A list of Authorized
Audiobahn Dealers can be found on our web page).
Warranty Period: One year from the original date of purchase.
Warranty Coverage: This warranty covers manufacturer defects only. The warranty is
applicable to the original purchaser, and is non-transferable. You must have a receipt from
an Authorized Audiobahn Dealer that shows the location of purchase, price paid, and
date of purchase.
(Products purchased by consumers from an Authorized Audiobahn Dealer outside the
United States, are covered only by that countries Distributor and not by Audiobahn).
Notes:
Complete subwoofer enclosures (Audiobahn will replace defective subwoofers,
plexiglass, or neon only. Do not send the entire enclosure, unless the enclosure is
defective itself. You must receive prior authorization and an RA# before sending in any
complete enclosure).
Audiobahn will only replace L.E.D.(s) found to be defective at the time of purchase.
�Audiobahn
warranties do not cover the following:
�
�
Any product not purchased from an Authorized Audiobahn Dealer (including Internet �
dealers)
�
�
Damage caused by abuse, misuse, accident, water / flood, or theft (including any �
cosmetic damage to the body of the product)
�
Damage caused by improper installation
�
Any cost or expense related to removal or reinstallation
�
Any unauthorized services
�
Any product that has the serial number removed, altered, or defaced
�
Subsequent damage to any other components
�
Pinched, cut, or stripped wires
�
Any product that is new, and/or found to be in working condition
�
L.E.D. indicators on electronics
�
18
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