Description
GM-DX971
Limited Edition Mono Subwoofer Amplifier — 1,200 watts RMS x 1 at 1 ohm
Pioneer’s extra-efficient GM-DX971 Class-D digital amplifiers mark a dramatic improvement in power output capability, yet are 50% smaller than the current GM-Series Class-AB amplifiers. That makes them more versatile in terms of installation as well as performance.
Improved Circuit Design
To prevent circuit shutdown, Pioneer’s digital amplifier circuit “Protection Control System” senses its internal temperature and automatically moderates input level accordingly. The stable and durable circuitry lessens the risk of high input power to the unit so that it can achieve a 1 Ω connection. This design provides the flexibility to connect multiple subwoofers to a system.
Variable Low-Pass Filter
For extra flexibility, a variable LPF makes audio frequency more adjustable according to subwoofer characteristics and personal listening preferences. The GM-DX971 LPF is adjustable from 40 Hz to 240 Hz.
Turn Up the Bass
Every new Pioneer Class-D amplifier has a wired bass boost remote control for optimal bass level adjustment according to listening preferences and music characteristics.
General GM-DX971
| Number of Channels | Mono |
|---|---|
| Wattage RMS (4 Ω <= 1 % THD+N) | 500 W x 1 |
| Wattage RMS (2 Ω <= 1 % THD+N) | 800 W x 1 |
| Wattage RMS (1 Ω <= 1 % THD+N) | 1,200 W x 1 |
| Frequency Response | 10 Hz to 240 Hz |
| Total Harmonic Distortion (1 kHz, 4 Ω) | <0.5 % (100 Hz) |
| Signal-to-Noise Ratio (IHF-A-Weighted) | >100 dB |
| Dimensions (W x H x D) | 11-7/8″ x 2-3/8″ x 8-15/32″ |
Detailed & Features
| Amplifier Class | Class D |
|---|---|
| Load Impedance Allowance (Ω) | 1 to 8 |
| Protection Control System | x |
| MOSFET Output Section | x |
| Balanced Isolator Input Circuit | x |
| RCA Inputs | 2-Ch. |
| RCA Outputs (Pass-Through) | x |
| Speaker Level Input | x |
| Automatic Signal Sensing and Turn-On | x |
| Hi-Volt Input Level Control n(200 mV to 6.5 V) |
x |
| Block-Type Terminal nPower/Ground Terminals |
x n(4 to 8-gauge) |
| Block-Type Terminal Speaker Terminals |
x n(8 to 16-gauge) |
| Crossover Type | Variable LPF |
| Crossover Frequency | 40 Hz to 240 Hz |
| Crossover Slope | -12 dB/oct. |
| Bass Boost Frequency | 50 Hz |
| Bass Boost Level | 0 dB to 18 dB |
| Bass Boost Remote | x |
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