About the Pioneer GM-D8604
Pioneer's sharp-looking GM-D8604 4-channel amplifier can send 100 watts RMS to each of your front and rear speakers, for powerful music that'll get you and your car rockin'. Highly efficient Class D technology keeps this powerful amp running as cool as it looks, and allows for a compact chassis that fits in a lot of out-of-the-way spaces. If you're building a big system in stages, you can use this versatile amp at first to drive a pair of speakers with the front two channels while bridging the rear channels together to power a subwoofer with up to 300 watts RMS. Later on, you can get Pioneer's big mono amp to drive your subs, and switch this amp over to run all four of your full-range speakers.
Connecting and tuning made simpleIf your car stereo doesn't have RCA outputs, you can use the speaker-level inputs to hook this amp into your system — the amplifier switches its input mode automatically when it detects the high-level signal. And the built-in high- and low-pass filters let you adjust the sound for your car's interior, whether you're driving speakers or subs.
- 4-channel car amplifier
- 100 watts RMS x 4 at 4 ohms (150 watts RMS x 4 at 2 ohms)
- 125 watts RMS x 4 at 1 ohm
- 300 watts RMS x 2 bridged at 4 ohms (250 watts RMS x 2 bridged at 2 ohms)
- CEA-2006 compliant
- full-range Class D amp technology
- variable high- and low-pass filters (40-500 Hz, 12 dB per octave)
- preamp inputs and outputs
- speaker-level inputs via supplied RCA-type adapters
- fuse rating: 30A x 2
- 4-gauge power and ground leads recommended wiring and hardware not included with amplifier
- 11"W x 2-3/8"H x 7-7/8"D
- warranty: 1 year
- Our 60-day money-back guarantee
- MFR # GM-D8604
What's in the box:
- 4-Channel amplifier
- Two 30 amp ATO fuses (installed)
- Two 8" Speaker-level input adapters
- 3mm Allen wrench
- Four 5/8" Self-tapping screws
- Owner's manual (English/ French/ Spanish)
- Warranty information
More details on the Pioneer GM-D8604
Features & specs
|RMS Power Output (Watts x Channels)||
100 x 4 |
|Peak Power Output (Watts x Channels)||600 x 2|
|Power at 2 Ohms (Watts x Channels)||150 x 4|
|Bridged Power (Watts x Channels)||300 x 2|
|Minimum Impedance Bridged||2|
|Minimum Impedance Unbridged||1|
|Best Frequency Response||10-50k Hz|
|THD at Rated RMS Power||1%|
|Signal to Noise Ratio||75 dB|
|Low-Pass Crossover Frequency||40-500 Hz|
|Low-Pass Slope (dB/octave)||12 dB/octave|
|High-Pass Crossover Frequency||40-500 Hz|
|High-Pass Slope (dB/octave)||12 dB/octave|
|Bass Boost Frequency||N/A|
|Speaker Level Inputs||RCA|
|Preamp Outputs||1 pair|
|Parts Warranty||1 Year|
|Labor Warranty||1 Year|
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.
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
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.
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