Crunch GPX1500.4

The Crunch GPX1500.4 is a powerful analog 4-channel amplifier from the Groundpounder GPX series. With up to 4 x 200 watts RMS at 2 ohms, this power amplifier offers ample power reserves for demanding front and rear speakers or high-performance multi-way systems. Alternatively, the channels can be bridged, providing up to 2 x 400 watts RMS at 4 ohms.

Thanks to its built-in high-pass and low-pass filters, the GPX1500.4 can be flexibly adapted to various car audio configurations. An adjustable high-pass filter is available for channels 1 and 2, while channels 3 and 4 can be operated with either a high-pass or low-pass filter. In addition, channels 3 and 4 feature a switchable bass boost with settings of 0, 6, or 12 dB.

The high input sensitivity, ranging from 0.1 to 7 volts, allows for easy adaptation to various signal sources. A wired bass-level remote control is also included, enabling convenient level adjustment from the driver's seat.

Technical Specifications:

• Amplifier Type: 4-Channel Analog Amplifier

• Amplifier Class: Class A/B

• Channels: 4
  
  

RMS power:

• 4 x 110 watts RMS at 4 ohms

• 4 x 200 watts RMS at 2 ohms

• 2 x 400 watts RMS bridged at 4 ohms
  
  

Maximum power:

• 4 x 220 watts MAX at 4 ohms

• 4 x 375 watts MAX at 2 ohms

• 2 x 750 watts MAX, bridged at 4 ohms
  
  

Additional technical specifications:

• Permissible speaker impedance in stereo mode: 2–8 ohms

• Frequency response: 5 – 40,000 Hz (-3 dB)

• Total Harmonic Distortion (THD at 5 W): < 0.07%

• Signal-to-noise ratio: > 91 dB

• Input sensitivity: 0.1 – 7 V

• Input impedance: 10 kOhm
  
  

Crossover networks:

• High-pass filter, channels 1/2: 50–250 Hz

• High-pass filter, channels 3/4: 50–250 Hz

• High-pass slope: 12 dB/octave

• Low-pass filter, channels 3/4: 50–250 Hz

• Low-pass slope: 12 dB/octave

• Bass Boost Channels 3/4: 0 / 6 / 12 dB (selectable)
  
  

Features:

• RCA signal inputs

• Separate input level control for channels 1/2 and 3/4

• FULL/HPF Switching for Channel 1/2

• FULL/LPF/HPF Switching for Channels 3/4

• Connector for bass level remote control

• Bass Level Remote Control Included

• Operating and Protection Circuit Indicator

• Bridge operation possible
  
  

Power Supply & Dimensions:

• Operating voltage: 12 V DC, negative terminal to ground

• Permissible operating voltage range: 6.8 – 20 V

• Fuse rating: 3 x 30 A

• Dimensions (W x H x L): 254 x 46 x 358/392 mm