Crunch GPX1000.4

The Crunch GPX1000.4 is a classically designed 4-channel amplifier featuring Class A/B technology and is suitable for a wide range of car audio applications. With four independently controllable amplifier channels, you can, for example, power a complete front and rear speaker system. Alternatively, the channels can be bridged to drive higher-power speakers or a subwoofer.

At 4 ohms, the GPX1000.4 delivers 4 x 70 watts RMS, while at 2 ohms it delivers up to 4 x 125 watts RMS. In bridged mode, it can deliver up to 2 x 250 watts RMS at 4 ohms.

Adjustable high-pass and low-pass filters are available to accommodate different speaker configurations. The high-pass filters can be set for both channel pairs in the range from 50 to 250 Hz. For channels 3 and 4, a low-pass filter is also available, with a range of 50 to 250 Hz. A three-level switchable bass boost provides additional bass enhancement when needed.

Thanks to its combination of four channels, bridge mode, and integrated crossovers, the GPX1000.4 is suitable for both traditional multichannel systems and setups combining speakers and subwoofers.

Technical Specifications:

• Amplifier Type: Class A/B Analog

• Number of channels: 4
  
  

RMS power:

• 4 x 70 watts RMS at 4 ohms

• 4 x 125 watts RMS at 2 ohms

• 2 x 250 watts RMS bridged at 4 ohms
  
  

Maximum power:

• 4 x 140 watts MAX at 4 ohms

• 4 x 250 watts MAX at 2 ohms

• 2 x 500 watts MAX, bridged at 4 ohms
  
  

Filters and Sound Settings:

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

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

• High-pass filter slope: 12 dB/octave

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

• Low-pass filter slope: 12 dB/octave

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

Additional technical specifications:

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

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

• Total harmonic distortion: < 0.5% at 1 kHz

• Signal-to-noise ratio: > 90 dB

• Input sensitivity: 0.1 – 7 V

• Input impedance: 10 kOhm

• RCA inputs

• Stereo Signal Output for Channel 1/2

• Operating voltage: 12 V (9–15 V)

• Fuse rating: 2 x 20 A

• Dimensions (W x H x L): 254 x 46 x 300/330 mm
  
  

Features:

• Analog Class A/B Circuit

• 4-Channel Operation

• 2-channel bridge mode supported

• Two adjustable high-pass filters

• Adjustable low-pass filter for channels 3 and 4

• Three-Level Bass Boost

• RCA inputs

• RCA signal output

• Flexible use for front/rear speakers or speaker/subwoofer combinations