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Features
Controls
Connections
Features
CEA 2006 Compliant: The Pioneer GM-D8604 4-channel amplifier
power ratings are measured according to the Consumer Electronics Association's
CEA-2006 standards. These standards allow you to accurately compare the rated
power output of all CEA-2006 compliant amplifiers, even from different brands.
Manufacturers who adhere to the standards can display the CEA-2006 logo on their
products and packaging. CEA-2006 Specifications:
- Power Output:
- 100 watts x 4 at 4-ohms with <1% THD+N
- 150 watts x 4 at 2-ohms with <1% THD+N
- 300 watts x 2 at 4-ohms with <1% THD+N (bridged)
- Signal to Noise Ratio: 75 dBA
Class-FD Amp: A Class-D amplifier offers higher power in
a smaller chassis than conventional Class-AB amp designs. Pioneer's exclusive
Class-FD design not only delivers full-range Class-D amplification, but is more
efficient than other designs. The result is clear full-range sound in a small
amplifier. The ultra-compact design provides many installation options.
Channel Layout: The GM-D8604 is a 4-channel amplifier; both
halves are bridgeable, so it can be wired as 4-channel, 3-channel, or 2-channel.
Rather than front and rear, the two sections of the amp are labeled A and B (on
both the inputs and outputs).
Auto Turn-on: When using a high voltage speaker level input,
a signal sensing circuit will automatically turn the amp on and off along with
the source unit.
Controls
Input Select Switch: The amplifier's input select switch allows
you to choose between 4-channel and 2-channel mode. The 4-channel mode requires that
two pair of RCA inputs be connected to the amplifier's A and B inputs, while the
2-channel mode only requires one pair connected to the A inputs.
Gain Control: There are independent gain controls for the A
and B amplifier sections, each is continuously variable from 200 mV to 6.5 V.
Crossovers: The A and B sections also have independent crossover
controls, each has:
- Crossover Select Switch: three position switch; LPF
(Low Pass Filter), Off (crossover is bypassed), HPF (High Pass Filter)
- Frequency: continuously variable from 40 to 500 Hz
Connections
Power: The power and ground connections are set screw terminals
that will accommodate up to 4-gauge wire. The included 3mm Allen wrench is used to
tighten and loosen the terminals. Pioneer recommends different power and ground wire
gauges based on the length of the wire:
- 8-Gauge: up to 14' 9"
- 6-Gauge: up to 23' 7"
- 4-Gauge: up to 37' 5"
Remote Turn-on: The remote connection is a set screw terminal
that will accommodate up to 8-gauge wire. The included 3mm Allen wrench is used to
tighten and loosen the terminals.
Speaker Connections: The speaker output screw terminals will
accommodate up to 8-gauge wire. The included 3mm Allen wrench is used to tighten
and loosen the terminals.
Signal Input: The amplifier features two pair of stereo RCA
inputs (A/B). If no line level signal is available, use the included speaker wire
to RCA adapters.
RCA Output: The one pair of preamp output jacks provide a
convenient way to daisy-chain an additional amplifier without running another
set of RCA cables from the front of the vehicle to the amplifier location. The
output is identical to the A channel input and is not affected by the internal
crossover.
