Legacy LA 470 - User Manual

Lists key features common to all Legacy Red Series 2 amplifiers.

Details technical specifications like output power, impedance, and dimensions for each model.

Describes the gold-plated speaker output terminals for high conductivity.

Explains the fuse's role in protecting the amplifier and electrical system.

Identifies the terminals for connecting the power supply.

Details the control for matching head unit output to the amplifier.

Explains the switch for selecting full range, HPF, or LPF crossover modes.

Allows adjustment of bass signal level sent to speakers.

Adjusts crossover frequency for subwoofers (35 Hz to 400 Hz).

Adjusts crossover frequency for tweeters (80 Hz to 2.5 kHz).

Connects speaker outputs from head units without RCA jacks.

Uses gold-plated RCA jacks for connecting to head unit outputs.

Indicates when the amplifier's remote turn-on system is active.

Illuminates when protection circuitry is activated due to overload or shorts.

Port for connecting the remote bass boost control wire.

Describes the gold-plated speaker output terminals for high conductivity.

Explains the fuse's role in protecting the amplifier and electrical system.

Identifies the terminals for connecting the power supply.

Control for matching head unit output to the amplifier.

Switch for selecting full range, HPF, or LPF crossover modes.

Allows adjustment of bass signal level sent to speakers.

Adjusts crossover frequency for subwoofers (35 Hz to 400 Hz).

Adjusts crossover frequency for tweeters (80 Hz to 2.5 kHz).

Connects speaker outputs from head units without RCA jacks.

Uses RCA jacks for connecting to head unit outputs.

Indicates when the amplifier's remote turn-on system is active.

Illuminates when protection circuitry is activated due to overload or shorts.

Port for connecting the remote bass boost control wire.

Provides step-by-step instructions for connecting power to the amplifier.

Offers crucial safety and installation advice to prevent damage and ensure proper function.

Guides on initial setup, level adjustments, and proper turn-on procedures.

Diagram for connecting stereo audio using RCA cables from the head unit.

Diagram for connecting using speaker wires from the head unit's output.

Diagrams for connecting 4-channel audio from 2-channel or 4-channel sources.

Diagram for 4CH high-level input with a floating ground connection.

Diagram for 4CH high-level input with a common ground connection.

Diagram for connecting in bridged mode for 2-channel amplifiers.

Diagram for connecting 4-channel audio in bridged mode.

Diagram illustrating standard stereo speaker connections.

Diagram illustrating standard 4-channel speaker connections.

Diagram for connecting speakers in bridged mono configuration.

Diagram for 2-channel amplifiers configured for mono-bridged output.

Diagram for a combined stereo and mono-bridged subwoofer output configuration.

Guides on diagnosing issues when the amplifier does not turn on.

Helps identify and resolve noise issues like alternator whine in speakers.

Troubleshoots the protection circuit activation, indicating potential shorts or overloads.

Addresses overheating issues by checking impedance, airflow, and shorts.

Provides steps to fix distorted audio output, checking level and crossover settings.

Identifies poorly-grounded RCA patch cords as the common cause of squeal.