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The success of any car stereo system relies on several factors, such as the system design, execution of the installation, and system setup.
Amplifiers should be mounted with the fins running horizontally for best convection cooling, to minimize overheating.
Use a sufficient gauge power cable and ground cable using the chart below as reference to what size wire you require.
After all cables are run, connect speaker wires to the speakers and amplifiers, then run and plug in RCA cables.
Ensure the head unit is off, and turn all level controls to minimum before powering up the system.
All Crunch amplifiers feature a comprehensive diagnostic system, with speaker lead short circuit, and amplifier DC faults indicated by the red 'PROTECT' LED.
The X-OVER slide switch selects the internal crossover functions, and the input signal is routed directly to the LINE OUT RCA jacks.
The 4 channel amps have two sets of controls for channels 1&2 and 3&4, plus a Mode switch for 2 or 4 channel operation.
These 1-channel amplifiers feature a LINE INPUT signal routed directly to the LINE OUT RCA jacks, simplifying daisy chaining.
This is the most basic application for the GTR Series 2 channel amplifiers. Connect the LINE INPUTS to the Radio/CD with good quality RCA cables.
This application illustrates the basic mono bridging method for all Crunch 2 channel amplifiers. A MONO signal source is required.
Use the 4 channel amplifiers as straight forward discrete 4 channel full range units. Connect the four inputs to a Radio/CD with quality RCA cables.
Use the 4 channel amplifiers as a 3 channel unit by taking advantage of the mono bridging capability of all Crunch amplifiers.
These sub bass amplifiers can be used in bi-amplification systems, replacing 2 channel amplifiers. Connect inputs to a suitable source.
Table showing power output ratings for different models at various impedances (4-Ohms, 2-Ohms, 1-Ohm, Mono Bridge).
Details frequency response, damping factor, signal to noise ratio, THD, channel separation, and input impedance for each model.
Covers DC, Speaker Short, Thermal, and Overload protection indicators and systems.
Details variable low pass, high pass, subsonic filters, and crossover switch settings for different channels.
Describes connector types (RCA) and fusing requirements (Amps) for each model.
Guidance on setting High Pass, Bass EQ, and Low Pass filters, and adjusting the Level Control for optimal system performance.
Guidance on setting Subsonic, Bass EQ, and Low Pass filters, and adjusting the Level Control for optimal system performance.
Explains the PROTECT LED and conditions that cause the amplifier to shut down, including short circuits and internal faults.
Discusses causes of overheating and how the amplifier will shut down and restart once cooled.
Checks for proper level control setup, battery voltage, and +12 volt/ground connections.
Identifies causes like low impedance loads, short on the +12 volt cable, or a faulty amplifier.
Troubleshooting steps for checking fuses, connections, and voltage at amplifier terminals.
Covers hiss from high levels or noisy head units, and electrical interference from vehicle systems.
Addresses noise caused by RCA cable proximity to engine components or improper head unit grounding.
Troubleshooting for system instability or oscillations, checking connections and speaker lead shorts.
Warrants the amplifier to be free from defects in material and workmanship for one (1) Year from date of purchase.
Excludes damage from misuse, abuse, accident, incorrect wiring, or unauthorized alterations.
Converts High Level OEM speaker wires to Ultra Clean RCA Low Level Outputs, featuring Parametric Bass EQ and Clipping Indicators.
Provides subwoofer output signal shaping controls, accepts various signal levels, and includes clipping indicators.
Converts High Level OEM speaker wires to Ultra Clean RCA Low Level Outputs, with Audio Signal Sense and Remote Output.
Converts High Level OEM speaker wires to Ultra Clean RCA Low Level Outputs, with Audio Signal Sense and Remote Output.
Allows linking or strapping of mono amps for unified control, offering features like clipping indicators and a tone generator.
Lists features such as linking up to ten amps, parametric bass EQ, subsonic filter, and phase shift control.
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