Pioneer GM-D8704 high-power, Class-FD 4-channel bridgeable car amplifier
Key Features
Power Output: Provides 100W RMS x 4 channels at 4 ohms, 150W x 4 at 2 ohms, and up to 300W x 2 when bridged at 4 ohms.
1-Ohm Stability: Features a stable 1-ohm circuit, allowing for the connection of multiple subwoofers with reduced risk of high input power damage.
Class-FD Technology: Combines the efficiency of a Class-D digital amplifier with high-quality sound parts, such as audio film capacitors, to ensure crystal-clear audio with minimal heat generation.
Variable Crossovers: Includes adjustable High Pass (HPF) and Low Pass Filters (LPF) ranging from 40 Hz to 500 Hz for precise speaker and subwoofer tuning.
Wired Bass Boost: Comes with a wired remote that allows for real-time bass level adjustments from 0 dB to 18 dB (at 50 Hz) specifically for Channel B.
Frequency Response: Covers a wide range from 10 Hz to 50 kHz, ensuring detailed sound across various music genres.
Compact Chassis: Dimensions of 252 mm x 60 mm x 215 mm allow for easy mounting in tight spaces like under seats.
Automatic Signal Sensing: Automatically detects input signals and switches between RCA and speaker-level inputs, turning the unit on when the receiver starts.
Protection Control System: Senses internal temperatures and automatically moderates input levels to prevent circuit shutdown and ensure long-term durability.
Product Description
An amplifier shouldn’t take up too much space, especially in your car. The GM-D8704 might just be what you’re looking for. It combines a 1-Ohm stable circuit, installation flexibility, and superior high-power output.
Variable HPF/LPF
For Extra flexibility, variable LPF & HPF make audio frequency more adjustable according to subwoofer characteristics and personal listening preferences
Bass Boost Remote
Every new class D Amplifier has a Bass Boost Remote Controller for optimal bass level adjustment according to listening preferences and music characteristics.
Highly Reliable Circuit Design
To prevent circuit shutdown, Pioneer’s new digital amplifier circuit “Protection Control System” senses its internal temperature and automatically moderates input level accordingly Stable Durable Circuitry lessens the risk of high input power for the unit to achieve 1-ohm connection. This design enhances the flexibility to connect multiple subwoofers to a system.
Specifications
Modal Name |
GM-D8704 |
No. of Channels |
4/3/2 |
Max. Wattage (4 ohms) |
200W X 4 |
Max. Wattage (2 ohms) |
300W X 4 |
Max. Wattage (1 ohm) |
1200W (Total) |
Wattage RMS (4 ohm <= 1% THD+N) |
100W x 4 (20-20kHz) |
Wattage RMS (2 ohm <= 1% THD+N) |
150W x 4 (1kHz) |
Wattage RMS (1 ohm <= 1% THD+N) |
>125WX4 (1kHz) |
Wattage RMS (4 ohm, Bridged) |
300W x 2 (1kHz) |
Distortion (100Hz, 4 ohm, 10w) |
< 0.05% |
S/N Ratio (IEC-A/IHF-A N/W) |
>95dB |
Frequency response |
10-50kHz (0,-3dB) |
Max. Input Level (RCA) |
6.5V (Low) |
Max. Input Level (SP-Input) |
16v (High) |
Load Impedance |
1-8 ohm |
Amplifier Class |
Class D |
Transistor |
MOSFET |
Input level control (RCA-IN) |
(200mv-6.5v) |
Input level control (SP-IN) |
(0.8v-16v) (High) |
Frequency |
50Hz (CH-B) |
Bass Boost |
0-18dB |
Bass Boost Remote |
Yes (CH-B) |
Low Pass Filter |
40-500Hz, -12dB/oct |
High Pass Filter |
40-500Hz, -12dB/oct |
Protection Indicator |
RED (Side Panel) |
Power Indicator |
BLUE (Side Panel) |
Speaker input cable |
20cm |
Bass Remote Cord |
5m |
Hex Wrench |
Yes |
Mounting screws |
4 piece |
Owner's manual |
Yes |
Chassis size (W x H x D) |
252 mm x 60 mm x 215 mm |