Crunch CM1

The Crunch CM1 is a powerful and exceptionally compact single-channel Class-D digital amplifier designed specifically to drive subwoofers. Despite its small dimensions of just 90 x 43 x 140 mm, this monoblock delivers an impressive 420 watts RMS into 2 ohms and is ideal for high-performance bass systems in tight spaces.

Thanks to modern Class D technology, the CM1 achieves an efficiency of up to 85% and combines high output power with efficient energy utilization. The high-quality die-cast aluminum heat sink, featuring an elegant diamond-cut logo, provides an attractive appearance and aids in heat dissipation. Thanks to its compact design, the amplifier can be easily integrated under the dashboard, behind trim panels, or in small storage compartments.

To ensure precise adjustment to the subwoofer being used, the Crunch CM1 features an adjustable low-pass filter, a subsonic filter, stepless phase control, and a bass boost of up to 12 dB. The included bass level remote control allows you to conveniently adjust the bass level right from the driver's seat.

In addition to standard RCA inputs, the amplifier offers high-level inputs with EPS technology for integration into factory-installed sound systems. An automatic power-on function via DC offset or signal detection (VOX) simplifies retrofitting. Removable power and speaker connectors also allow for easy installation, even in tight spaces.

Technical Specifications

Amplifiers and Power

• Model: Crunch CM1

• Product Line: Crunch MINI Series

• Amplifier Type: Digital Mono Power Amplifier

• Amplifier Technology: Class D

• Number of channels: 1 channel (mono)

• RMS power at 4 ohms: 1 x 250 watts

• RMS power at 2 ohms: 1 x 420 watts

• Maximum power at 4 ohms: 1 x 500 watts

• Maximum power at 2 ohms: 1 x 840 watts

• RMS power ratings at 14.4 volts operating voltage

• Permissible speaker impedance: 2–8 ohms

• Minimum impedance: 2 ohms

• Efficiency: up to 85%

• Suitable for driving one or more subwoofers with the appropriate total impedance
  
  

Audio Properties and Filters

• Total Harmonic Distortion (THD) at 5 watts: less than 0.02%

• Signal-to-noise ratio: over 90 dB

• Integrated active crossover

• Low-pass filter: 40–150 Hz

• Low-pass filter slope: 12 dB/octave

• Subsonic filter: 10–40 Hz

• Phase control (phase shift): continuously adjustable from 0–180°

• Bass Boost: 0–12 dB

• Bass boost frequency: 50 Hz

• Input sensitivity adjustable via the gain control

• Connection for an external bass level remote control is available

• Bass level can be easily adjusted using the included remote control
  
  

Signal Inputs and Connections

• Low-level inputs: Stereo RCA

• RCA input sensitivity: 200 mV to 5.8 V

• High-level inputs: via the included RCA high-level adapter

• High-level input sensitivity: 600 mV to 18 V

• EPS (Error Protection System): included

• EPS Technology to Prevent Error Messages in Compatible Vehicle Diagnostic Systems

• Can be connected to aftermarket and compatible factory radios

• Automatic power-on via high-level inputs using DC offset

• Automatic power-on via RCA inputs using VOX signal detection

• Classic remote power-on input available

• Removable power connector

• Detachable speaker connector

• Connector for wired bass level remote control

• Power/Protect Status Indicator
  
  

Power Supply and Circuit Protection

• Operating voltage: 10.5–16.5 volts DC

• Short-term operation is possible even if the voltage drops to 7 volts (for a maximum of 5 seconds)

• Suitable for 12-volt vehicle electrical systems with a negative ground

• Equipment fuses: 2 x 30 amps

• Total fuse rating: 60 amps

• An external fuse is required for the positive lead on the vehicle battery

• Protective circuit for overheating and electrical malfunctions

• Blue status LED during normal operation

• Red status LED when the protection circuit is activated
  
  

Dimensions and Construction

• Width: 90 mm

• Height: 43 mm

• Length: 140 mm

• Dimensions (W x H x L): 90 x 43 x 140 mm

• Extremely compact mini design

• High-quality die-cast aluminum heat sink

• Diamond-cut logo on the case

• Permissible temperature range: -25 to +50 °C

• Permissible relative humidity: 10–90%

• Can be installed in a space-saving manner under the dashboard, behind trim panels, or in storage compartments
  
  

What's Included

• 1 x Crunch CM1 Mono Amplifier

• 1 x Bass Level Remote Control, including connection cable

• 1 x Stereo RCA High-Level Adapter

• 1 x Removable speaker connector plug

• 1 x Removable power connector

• 1 x User Manual