Our Product Research Team
At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere.
That's because we have our own in-house Product Research team — they open the box,
verify contents, check the owner's manual, and record dimensions, features and specs.
We stay on top of new products and technologies to help people make informed choices.
Inputs and Outputs Notes
Class A/B MOSFET Power Amplifier:
The Audiobahn A6004T
is a Class A/B amplifier that uses MOSFET high-speed switching devices for its amplification stage
and power supply.
High-gloss Chrome-plated Finish:
This amplifier has a high-gloss chrome-plated finish. A
pair of white cotton gloves is included with the amplifier to prevent
fingerprint smudges when handling and mounting the amp.
Cooling Fan: This amp has a built-in air intake and a cooling fan on top, ensuring
cool, reliable operation.
Variable Subsonic Filter: The
subsonic filter (variable from 20Hz to 50Hz) allows the amplifier to block
ultra-low frequencies that your speakers can't reproduce, improving the efficiency
of your speaker system. The front (1 & 2) and rear (3 & 4) channels have
independent subsonic filters. No slope information is given for the subsonic filter.
Internal Crossovers: The front
and rear channels have separate crossovers. Each crossover can be independently
set for low-pass, high-pass, or full-range operation.
In low-pass mode, the crossover is adjustable from 50Hz to 120Hz. In
high-pass mode, the crossover is adjustable from 50Hz to 750Hz. In both modes,
the crossover has a slope of
Bass Boost: The front and rear
channels each have a bass boost switch which allows you to select a +18dB gain in bass output, centered at 50Hz. If you connect the optional ABR-100T remote bass boost control
(item # 037ABR100T),
the gain is adjustable from 0dB to +18dB.
Soft-Start Circuitry: The
amplifier automatically turns on a few seconds after you turn your vehicle's
ignition switch to ACC or ON. This eliminates the potentially damaging loud
"thump" when multiple components power up simultaneously.
Optional Digital Voltmeter:
This amp can be used with an the optional ADM-100T remote-mount digital voltmeter
(item # 037ADM100T).
Protection Circuitry: This amp
has 4-way protection circuitry, and will automatically shut down when it detects
one of the following conditions: excessive heat (+158°F), input overload, short circuit,
or DC offset. The protection LED will glow to indicate a problem that needs to be rectified.
Inputs and Outputs
Set-Screw Terminals: The A6004T
is equipped with nickel-plated set-screw terminals for power and ground that can
accept up to 4-gauge bare wire. The remote turn-on and the speaker output
set-screw terminals can accept up to 8-gauge bare wire. Two Allen wrenches (3mm
for power/ground and 2.5mm for remote turn-on and speakers) are supplied to
tighten/loosen the set screws.
Line Outputs: The line outputs
can be used to feed signals to another amplifier without having to split the
signal or use Y-adapters. They are not affected by the built-in low-pass or
Speaker-Level Inputs: Using the
supplied speaker-level input harness, you can connect the amplifier to all 4
channels of a
receiver or factory radio without preamp outputs. You will need to splice the
receiver/radio's speaker wires to the harness, then simply plug the harness into
the 5-pin high-input jack on the amplifier. Note: For 4-channel speaker
level inputs, the 4 positive speaker leads and chassis ground are connected to
the 5-wire harness.
DVM/Remote: Two female RJ-11
telephone-type jacks are provided for the optional Audiobahn ADM-100T remote-mount
digital voltmeter and the ABR-100T remote bass boost control.