Quadraphonic 4-Channel Amplifier USER’S MANUAL MODERN SOUND FOR YOUR CLASSIC
Table of Contents Welcome ............................................ 2 What’s in the Box .................................. 3 Precautions ........................................ 4 Mounting the Amplifier ............................. 6 Power and Ground Connections ....................... 7 Wiring - RetroSound® Radios | Direct ............... 8 Wiring - RetroSound® Radios | RCA .................. 9 Wiring - Other Radios .............................. 10 Controls ....................................
Welcome Thank you for purchasing a RetroSound® Quadraphonic 4-channel amplifier. General Features • 4-channel amplifier • Full-range Class D digital circuitry • 45-watt RMS x 4 channels full-range @ 4 ohms • Built-in high pass filter • Advanced circuitry and thermal protection • Directly connects to your RetroSound radio • Works with any aftermarket radio with low-level RCA outputs • Optional wiring kit available for aftermarket radios • Compact size fits almost anywhere • Dimensions: 7.05 in x 3 in x 1.
What’s in the box The items shown below are packaged with your Quadraphonic amplifier. Quadraphonic Amplifier Metal Screw (x4) 3 help.retromanufacturing.
Precautions PLEASE OBSERVE THESE PRECAUTIONS WHEN INSTALLING AND USING THIS UNIT: This user’s manual does not cover all possible installation scenarios. Please be sure to follow the instructions carefully while attempting installation. If you feel you cannot install this unit yourself, consult with a local car audio professional. Retro Manufacturing, LLC is not liable for any problems resulting from improper installation of the unit.
Precautions • This unit is not designed for a marine environment. Please do not use the unit where it will be exposed to moisture or excessive dust. Exposure to moisture will damage the unit and void your warranty. • Use caution when routing wires to prevent them from being caught in the vehicle’s chassis. Screws and moving parts such as seat rails can cause damage to the wiring if improperly routed. • Never splice into the power lead to supply other equipment with power.
Mounting The Amplifier 1” 1” 2” Mounting Under a Seat 1” clearance from all sides for proper airflow Mounting Near The Radio 2” clearance to avoid interference. The compact size of the RetroSound® Quadraphonic amplifier enables considerable installation flexibility. For example, the amplifier may be placed behind the dash or under the seats. It is best to mount the amplifier in a location that allows air to freely circulate around it and allows access to the end panel controls for adjustments.
Power and Ground Connections Electrical System Test The Quadraphonic amplifier is designed to work within a range of 12 volts to 14.4 volts DC. Before connecting any wiring, use a multi-meter to test the vehicle’s electrical system for adequate power supply. First, check the voltage at the battery with the ignition in the off position. The multi-meter should read no less than 12 volts. Next, check voltage at the battery with the engine running. The multimeter should show a reading between 12 and 14.4 volts.
Wiring: RetroSound Radio® | Direct Connection Connect the Quadraphonic amplifier directly to your RetroSound® radio by connecting the power connector (black) and speaker connector (brown) from the amplifier to the Main Harness. Next, connect the black GROUND lead to a suitable grounding point and the yellow CONSTANT lead to the vehicle’s battery (see page 6). Connect the front & rear speakers to the output side of the amplifier using the Speaker Harness supplied with your RetroSound Radio.
Wiring: RetroSound Radio® | RCA Connection Connect the Quadraphonic amplifier to your RetroSound® radio’s wiring harness by connecting the power connector (black) and RCA cables to the input side of the amplifier. When using RCA connections, the brown speaker connector is not needed. Next, connect the black GROUND lead to a suitable grounding point and the yellow CONSTANT lead to the vehicle’s battery (see page 6).
Wiring: Other Radios Connect the RCA cables from the radio to the Quadraphonic amplifier, or cut and remove the speaker connector (brown) from the input side of the amplifier and connect the leads directly. Cut and remove the power connector (black) from the input side of the Quadraphonic and connect the leads to the output source. Always use butt connectors or solder when making direct connections.
Controls A. Front and Rear HPF/FULL Electronic Filter These switches activate the built-in electronic filter. When set to HPF (High Pass Filter), the filter limits bass frequencies, sending only those frequencies above 100Hz to the speakers. This is useful in a system in which a separate subwoofer is used to reproduce bass frequencies. When set to FULL the full spectrum of music is sent to the connected speakers. B.
Troubleshooting Problem Solution Power LED does not turn on Power LED illuminates blue, but there is no power output • Check to ensure that the yellow constant wire has 12 to 14.4 volts. • Check to ensure that the blue/white amplifier turn-on lead has 12 volts. • Advanced protection circuitry is engaged due to high internal temperature of the amplifier. The amplifier needs more clearance around the chassis. If this continues, choose a better ventilated mounting location.
Specifications Amplifier Output Power ...................................45 Watts x 4 channels RMS @ 4 ohms Peak Output ................................................................ 55 watts x 4 channels Signal to Noise Ratio ...........................................................................>90dB Input Sensitivity ................................................................... 200 mV-6.0 volts Frequency Response .................................................................
Warranty Your unit comes with a manufacturer's warranty covering any defects in materials and workmanship. Retro Manufacturing, LLC (collectively referred to as "the warranter"), at its option, will either (a) repair your unit with new or refurbished parts or (b) replace it with a new or refurbished unit. The warranty period starts from the original purchase date and is valid for the length of time indicated in the chart below. The decision to repair or replace will be made by the warranter.
7470 Commercial Way | Henderson, NV 89011 help.retromanufacturing.com MODERN SOUND FOR YOUR CLASSIC Published: 02/17/2023 | ©2023 Retro Manufacturing, LLC www.retromanufacturing.
