Crunch GPX2000.5

The Crunch GPX2000.5 is a powerful 5-channel amplifier designed to build a complete car audio system using just one power amplifier. Four channels power the front and rear speakers, while the separate fifth channel is specifically designed to drive a subwoofer.

Crunch combines two amplifier technologies: The four speaker channels operate in Class A/B, while an efficient Class D channel is used for the subwoofer. The subwoofer channel is stable down to 1 ohm and delivers up to 500 watts RMS. This makes the GPX2000.5 suitable even for high-power subwoofer systems.

A wide range of filter options is available for customization to the specific speaker system. The front and rear channels feature adjustable high-pass filters, while the subwoofer channel is equipped with a low-pass filter, a subsonic filter, and variable bass boost. The included bass level remote control allows you to conveniently adjust the subwoofer level from the driver’s seat.

Technical Specifications

• Amplifier Type: 5-Channel Hybrid Amplifier

• Amplifier Technology: Class A/B + Class D

• Channels: 5

• Front/Rear Channels: Class A/B

• Subwoofer channel: Class D
  

RMS Power (Front & Rear):

• 4 x 75 watts RMS at 4 ohms

• 4 x 125 watts RMS at 2 ohms
  
  

RMS Power of Subwoofer:

• 1 x 200 watts RMS at 4 ohms

• 1 x 350 watts RMS at 2 ohms

• 1 x 500 watts RMS at 1 ohm
  
  

Maximum Power (Front & Rear):

• 4 x 150 watts into 4 ohms

• 4 x 250 watts into 2 ohms
  
  

Maximum subwoofer power:

• 1 x 400 watts at 4 ohms

• 1 x 700 watts at 2 ohms

• 1 x 1,000 watts at 1 ohm
  
  

Speaker impedance:

• Front & Rear: 2–8 ohms

• Subwoofer: 1–8 ohms
  
  

Frequency range:

• Front & Rear: 10 Hz – 40 kHz (-3 dB)

• Subwoofer: 10 Hz – 250 Hz (-3 dB)
  
  

Filters & Equalization:

• High-pass filter (front and rear): 32–2000 Hz

• High-pass slope: 12 dB/octave

• Subwoofer low-pass filter: 32–300 Hz

• Low-pass slope: 12 dB/octave

• Subsonic filter for subwoofer: 10–60 Hz

• Subsonic slope: 12 dB/octave

• Bass Boost: 0–12 dB

• Bass boost frequency: 40–60 Hz
  
  

Additional technical specifications:

• Total Harmonic Distortion (Front & Rear): < 0.2% at 1 kHz

• Subwoofer distortion factor: < 0.2% at 100 Hz

• Signal-to-noise ratio: > 90 dB

• Input sensitivity: 0.4 – 6 V

• Input impedance: 10 kOhm

• RCA inputs

• Input selector switch for CH2/CH4/CH5

• Bass Level Remote Control

• Operating voltage: 12 V

• Permissible voltage range: 9–15 V

• Fuse rating on the amplifier: 2 x 40 A

• Dimensions (W x H x L): 254 x 46 x 360/390 mm