Coustic AMP400S Manual de usuario
INTRODUCTION
Welcome to Coustic’s world of power and clarity. The new Coustic 2-Channel amplifiers deliver the cleanest
music you’ve ever heard at any power level in the 12-volt environment. Besides the sleek contoured
design, these amplifiers have all the latest and most sophisticated audio features. This manual offers you
a guided tour of all these exciting features. For the best sonic reproduction, please follow the installation
suggestions and recommendations as closely as possible. The time you spend will prove to be worthwhile
when you sit back and enjoy the high fidelity music!
To further explore the potential of your Coustic amplifier, we recommend you match it with our dynamic
full-range speakers or subwoofers and electronic crossovers.
Whatever you need for your ultimate car audio system, look to Coustic for a wide range of car audio
components to meet the most critical demands.
That’s because . . . Coustic is Performance Tuned!
Please take a moment to register your purchase online at coustic.com.
Please also record the serial number of your amplifier in the space provided below and keep this manual
for future reference, as well as your sales receipt as proof of ownership. (The serial number of your
amplifier is marked on the bottom of its metal chassis.)
Serial Number:
Date of Purchase:
FEATURES
• Patented state-of-the-art power supply and output stage
• High mass extruded aluminum heatsink for maximum thermal management and bulletproof
reliability
• Adjustable, HP/LP Crossover - 40Hz-350Hz, 12dB/oct for maximum system design flexibility
• Stereo Gain Control for precision matching between your amplifier and radio
• Fully adjustable Bass Boost - 40Hz, 0-18dB to enhance the low frequency experience in your vehicle.
• Remote subwoofer level control included allows you to fine tune the bass from the driver’s position
when you switch between different musical styles
• High Level Input with patented Intelli-Sense™ auto turn-on for easy installation with factory radios
• CEA 2006 Compliant. All power ratings are not created equal. CEA 2006 Compliance ensures
that the power of this amplifier is measured according to strict standards dictated by the Consumer
Electronics Association.
SPECIFICATIONS
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RMS per channel @
4Ω (≤ 1% THD+N) 50 Watts 75 Watts 100 Watts 150 Watts
RMS per channel @
2Ω (≤ 1% THD+N) 100 Watts 150 Watts 200 Watts 300 Watts
RMS bridged channels
@ 4Ω (≤ 1% THD+N) 200 Watts 300 Watts 400 Watts 600 Watts
Signal to Noise Ratio 80 dBA 80 dBA 80 dBA 80 dBA
Frequency Response 20Hz to 20kHz (-3dB) 20Hz to 20kHz (-3dB) 20Hz to 20kHz (-3dB) 20Hz to 20kHz (-3dB)
Maximum Input Signal 5V 5V 5V 5V
Maximum Sensitivity 100mV 100mV 100mV 100mV
THD+N
(Distortion) <0.25% (reference:1W
output) <0.25% (reference:1W
output) <0.25% (reference:1W
output) <0.25% (reference:1W
output)
AMP400S AMP600S AMP800S AMP1200S
INSTALLATION
Disconnect the ground at the vehicle battery before proceeding.
1. Connect the amplifier to the battery
For maximum amplifier performance, we suggest 4 gauge wire and a 1 Farad stiffening capacitor. A
fuse or circuit breaker is required at maximum distance of 18” from the battery to protect the battery,
the vehicle, and more importantly you. It is highly recommended that installation be carried out by an
authorized dealer.
2. Connect the amplifier remote turn-on
Connect the remote input terminal of the amplifier to the remote output terminal of the source unit (only
if using RCA inputs) to establish amplifier remote on/off through the power on/off of the source unit.
If the source unit does not provide a remote output, connect to a switched 12-volt source, e.g. ignition
switch.
3. Connect the amplifier ground to the vehicle chassis
For maximum amplifier performance we suggest 4 gauge wire. Find a solid piece of metal and scrape
the paint away where the ground will be attached (NO FACTORY BOLTS). Connect the ground cable to the
amplifier at this point.
- NOTE -
For optimum performance and
sound reproduction, prepare
and secure the ground
properly. Remove any surface
material before securing to
your chassis, ensuring a
metal-to-metal ground point.
4. Remote Gain Control
Included is a remote gain control, which is a volume control that is active with the low pass filter engaged.
This control should be mounted near the driver in an easily accessed location. This is not a gain knob, this
is a level control. The level control will attenuate the amp or increase its output to the level of the gain
setting. It is used to adjust bass output between music sources or tracks (see picture below for connection
location).
5. Connecting signal cables to the amplifier
There are two ways to supply the signal to our amplifiers. To get maximum performance, we suggest
connecting a high quality RCA to the corresponding outputs at the source unit and inputs of the
amplifier. If a source unit is being used without RCA outputs, use the high-level inputs for signal which will
turn the amplifier on via our Intelli-Sense™ circuitry (Four-channel amps will only engage on the front
high-level inputs).
6. Reconnect the battery ground to the vehicle battery
Double check all the previous installation steps. Make certain the wiring and component connections are
securely attached to the amp +BATT, remote and ground. If everything is in order, complete the
installation by reconnecting the battery ground to the vehicle battery.
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WIRING DIAGRAM (CHARGING SYSTEM)
1 Farad
Stiffening
Capicitor
WIRING DIAGRAM (5.1 SURROUND SOUND EXAMPLE)
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WIRING DIAGRAM (SINGLE 4-CHANNEL AMPLIFIER SYSTEM)
WIRING DIAGRAM (MULTI AMPLIFIER SYSTEM)
8
Located on the Input Panel, the objective of input GAIN adjustment is to match the output of the source
unit with the input of the amplifier. The output voltage of individual source units can vary. Some source
units have an output of 200 mV and others have 5 Volts or more. To cater to these variations, the ampli-
fier has an adjustable gain level that ranges from 100 mV to 5 volts. Adjusting this control
requires some experimenting. Basically, you want all the gain at the beginning of the system, NOT at the
end (amplifier). Turn your source unit up and keep your amplifier gains at the minimum lowest possible
setting (counter-clockwise) with maximum output. This will give you the best sound and signal-to-noise
ratio.
Besides better sonic reproduction, proper input gain also helps to prolong the reliability span of your
amplifier by eliminating excessive internal temperature generated by incompatible source unit output
and amplifier input.
Note : Turning the input gain up does not indicate more power. Just more noise. The input gain control
is not a power control.
If the Remote Gain is used, connect the plug of the Remote Gain to the port on the panel of the
amplifier.
1. Turn the input GAIN all the way down (counter clockwise).
2. Set the volume control of the source unit to approximately 3/4 of its maximum output.
3. Turn the balance control of the source unit to its center position (flat).
4. Leave the tone (bass/treble) controls at their usual position.
5. Play a CD or tape track with great dynamic range.
6. Use the Bass Boost Control on the amp to enhance the bass performance (if desired), not the bass
on the head unit.
7. To locate the optimum gain setting, ask the person assisting you to turn the input GAIN control
clockwise until audio distortion starts to develop. Turn the gain control backwards slightly to
minimize the distortion.
8. If you constantly switch between CD/tape and radio, you will need further adjustment since radio
output level differs from that of CD or tape. In this case, you need to locate a balanced gain setting
which is best for both the output level of radio and that of CD or tape.
SYSTEM TUNING (INPUT GAIN ADJUSTMENT)
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