Features
Specifications
Controls and Indicators
Inputs/Outputs
Wiring Recommendation

Features

Class D Technology: Class D amplifier design is used to maximize efficiency, while maintaining the ability to drive difficult loads. The class D design allows this unit deliver a lot of power without generating as much heat as other amplifier designs, and it can drive a 1-ohm load.

Phase Shift Adjustment Control: The phase shift adjustment control allows you to shift the phase at 40Hz from 0 to 180 degrees. When this amplifier is used to power a subwoofer (or subwoofers), the phase shift control can be used to prevent phase cancellation of low frequencies that are output by the subwoofer and full-range or component speakers in your system. Matching the phase of your subwoofers with the phase of other speakers in your system ensures bass response does not suffer due to phase cancellation.

Crossover: This amplifier includes a continuously variable 18dB/octave, 50-300 Hz low-pass crossover. Since this amplifier is made specifically for driving subwoofers, the crossover is always active; it is not possible to obtain full range output from this amplifier.

Bass Boost: Bass response may be boosted from 0 to +10dB for frequencies around 40 Hz.

Test-tone: The amplifier includes a built-in oscillator that can be activated to check system performance; if the test-tone button is pressed and tones are heard through your speakers, the amplifier is in good working condition.

Protection circuitry:

• Over current: shuts off the amp when the input signal is too high
• Offset: shuts off the amp when the output voltage is too high
• Thermal: shuts off the amp when the operating temperature is too high

Line-out: One set of RCA stereo jacks are provided for easy connection to a second amp; the output signal is a full-range pass through signal from the inputs.

Specifications

Specifications:

• Supply voltage for power ratings: 14.4V DC
• RMS power at 4 ohms: 300 watts x 1 (20-300Hz, at 0.2% THD)
• RMS power at 2 ohms: 600 watts x 1 (20-300Hz, at 0.6% THD)
• RMS power at 1 ohms: 1000 watts x 1 (20-300Hz, at 1.2% THD)
• Max power output at 4 ohms: 600 watts x 1
• Max power output at 2 ohms: 1200 watts x 1
• Operating voltage: 10.5-16V allowable
• Current consumption (at rated output): 40 A
• Phase Shift Adjustment Range: 0-180 degrees (at 40 Hz)

Controls and Indicators

Controls:

• Crossover frequency control: an inset rotary control that sets the crossover cut off frequency from 50 to 300Hz
• Phase control: an inset rotary control used to vary the phase shift at 40Hz from 0 to 180 degrees
• Low Boost control: an inset rotary control used to set the bass boost from 0 to +10dB at 40 Hz
• Level control: an inset rotary control used to set the amplifier's input sensitivity to match the level of the incoming signal
• Test Tone button: allows for system condition check; if tones are heard when the button is pressed,  the system is in good condition

Indicators:

• Over Current LED: illuminates in red when receiving a powerful signal
• Offset LED: illuminates in red when the voltage going out to the speaker terminal or the pin jack is too high
• Thermal LED: illuminates in red when the temperature rises to an unsafe level
• Power LED: illuminates green when the unit is on

Inputs/Outputs

Inputs

• +12V (power): screw terminal (0.555" wide)
• GND (ground): screw terminal (0.555" wide)
• REM (remote turn-on): push-pin spring terminal (accepts 16- to 22-gauge wire)
• Speaker-level inputs: push-pin spring terminals (accept 16- to 22-gauge wire)
• Line-In: two RCA jacks
• Line-Out: two RCA jacks
• Fuse: three 25 amp fuses (inserted)

Outputs

• Speaker outputs: screw terminals (0.35" wide)

Wiring Recommendation

Wiring Recommendation: This amplifier uses three 25-amp fuses, so its fuse rating (75-amps total) exceeds that of typical 4 gauge wiring kits, which tend to include a 60-amp fuse. The highest AGU fuse values carried by Crutchfield are 70 and 80 amps. To accommodate the entire 75-amp fuse rating, the fuse included with a pre-packaged wiring kit should be replaced with an 80-amp AGU fuse (sold separately).