Crunch PZi 325.2 - User Manual

Discusses system design, headroom, clipping, and amplifier mounting for optimal heat dissipation.

Details physical mounting recommendations and general wiring practices for noise reduction.

Provides advice on routing RCA cables away from power and speaker cables to prevent noise.

Explains proper gauge wire selection, fusing, and secure ground connection techniques.

Outlines the correct order for connecting RCA, speaker, power, and ground leads.

Provides a step-by-step procedure for safely powering up the system for the first time.

Explains the function of the POWER LED and the red "PROTECT" LED for diagnostics.

Warns against operating amplifiers below their intended impedance to prevent damage.

Describes crossover functions, MODE selection, and input/output options for 2-channel models.

Explains crossover functions, MODE selection, and input/output options for 4-channel models.

Outlines features like SUBSONIC, LPF, LEVEL, BASS EQ, and REMOTE control for mono amps.

Describes features like PHASE, REMOTE, BASS EQ, SUBSONIC, and PROTECT for D-Class mono amps.

Details the basic setup for full range stereo operation using 2-channel amplifiers.

Explains the basic mono bridging method for 2-channel amplifiers for mono applications.

Describes how to use high-level inputs when the radio/CD player lacks RCA outputs.

Details a 2-way active or bi-amplified system using two 2-channel amps for highs and bass.

Explains how to use 4-channel amplifiers as discrete 4-channel full-range units.

Shows how to create 2 or 3 channel systems by mono bridging pairs of channels.

Details implementing a 2-way active system using a 4-channel amp for highs and mono bass.

Describes a variation for faded highs/lows using front/rear outputs from a head unit.

Explains the basic application of mono sub bass amplifiers in bi-amplification systems.

Details the basic application of D-class mono sub bass amplifiers in bi-amplification systems.

Describes the crossover functions, MODE, INPUT, SUBSONIC, BASS EQ, and REMOTE for channel 5.

Explains how to use the 5-channel amplifier as a discrete 5-channel full-range unit.

Explains how to set the High Pass filter for different operation modes (Hi Pass, Low Pass/Bandpass, Flat/Full).

Guides on adjusting the Bass Boost (45Hz) to add bass impact without distortion.

Explains how to set the Low Pass filter to define the upper frequency limit for sound reproduction.

Details how to match amplifier input sensitivity to the head unit output for proper volume control.

Provides guidance on balancing levels for multi-way active systems (midrange, highs, bass).

Explains how to set the Subsonic filter to cut low frequencies for subwoofers.

Guides on adjusting Bass Boost for subwoofers, warning about overuse.

Explains how to set the Low Pass filter for subwoofer frequency range.

Explains how to adjust phase to align subwoofer timing with other speakers.

Details matching amplifier input sensitivity to head unit output for subwoofer volume.

Explains the PROTECT LED and conditions that trigger amplifier shutdown for diagnostics.

Discusses causes of overheating and provides solutions like improving airflow and checking impedance.

Lists checks for low output power, including level controls, voltage, and connections.

Explains common reasons for fuse blowing, such as impedance, shorts, or faulty amps.

Lists checks for system startup failure, including fuses, connections, and voltage.

Differentiates between hiss and electrical interference and their potential causes.

Addresses electrical interference from vehicle systems and how to isolate its source.

Explains ticking or whining noise that changes with engine RPM and its potential causes.

Discusses causes of constant whine, often related to signal instability or grounding issues.

Details the one-year warranty for amplifiers and accessories against defects in material and workmanship.

Lists damages and conditions not covered by the warranty, such as misuse or improper installation.

Explains requirements for returning products, including proof of purchase and proper packing.