AudioBahn A4KDN Manuel utilisateur
4000 WATT RMS CLASS D
COMPETITION AMP
A4KDN
OPERATING INTSTRUCTIONS
PLEASE RETAIN MANUAL FOR FUTRE USE AND REFERENCE
QUALITY, RELIABILITY, & PURE BLISS
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
website at www.audiobahn.com, or email us at [email protected] to learn about all the
details.
Table of Contents
Table of Contents
2
Introduction
Features and Specifications
Control and Functions
Planning / Mounting Your System
Adjusting and Tuning
Troubleshooting
Wiring Diagram
Warning and Disclaimer
Bridging 2 Amplifiers
3
4
5-10
11
12
16
15
17
13-14
Warranty 18-19
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 very 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.
Great products and proper installation are only a small piece of the puzzle when it comes to
your system. Make sure that your installer is using only 100% authentic installation accessories
from the Audiobahn Connections. The Audiobahn line has everything ranging from the smallest
terminal, to power wires up to 0 gauge, and 4 channel RCA cables.
To get a free brochure on Audiobahn products in the U.S. call (714) 988-0400 or e-mail us at
WARNING
Continuous exposure to sound pressure levels over 100 dB 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 a warranty repair or exchange.
Model Number:___________________ Date of Purchase: _____________________
3
Features and Specifications
4
> 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
> Phase Shift Control 0~180 degree
> Input Impedance 10K Ohm
> Source Voltage (Automobile battery) 11~16V DC
> Maximum DC current (1 Ohm, 1% THD +n) 456 amperes DC
> Dimensions : WxHxL
11.97" x 2.76" x 23.54"
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.
Controls and Functions
�
Controls and Functions
�
This plug connects the amplifier and the remote bass knob using the supplied cable.
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.
These inputs are for signal cables from the source. Always use high quality, shielded RCA cables.
1. Bass Boost Gain Remote Control
2. Input Sensitivity Control
3. Low level Input RCA Jacks
Controls and Functions
�
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.
By using the bass boost function, bass notes at 45Hz are emphasized as much as 18dB.
Allows you to change the phase of your subwoofer from 0 to 180 degrees to help compensate for timing
differences between drivers.
4. Low Level LINE OUT RCA Jacks
5. Bass Boost Control
6. Phase Shift Control
�
Controls and Functions
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.
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.
7. Low-Pass Filter Control
8. Sub Sonic Control
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.
Controls and Functions
These terminals are used to wire your subwoofer(s) to the amplifier.
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)
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.
10. Speaker Terminals
11. B- Terminal (Chassis Ground)
12. B+ Terminal (Battery Positive)
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