Welcome Thank you for purchasing a RetroSound SUB8100 powered ® subwoofer. General Features • 8-inch powered subwoofer • TrueRating™ 100-watt RMS Class D digital amplifier • Built-in continuously variable crossover • Remote gain control with 4’8” length cable • RCA (low-level) and speaker wire (high-level) inputs •...
What’s in the box The items shown below are packaged with your SUB8100. SUB8100 Powered Subwoofer Remote Gain Control Wiring Harness Adhesive Tape (x2) Small Metal Screw(x2) Mounting Brackets (x4) Metal Screw (x4) Machine Screw (x4) Washer (x4) Lock Washer (x4)
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 instal- lation. If you feel you cannot install this unit yourself, consult with a local car audio professional.
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Prolonged exposure to high volume levels may also result in hearing loss. • This unit is designed for operation with a negative ground 12-volt DC battery system. Do not operate this unit with other battery systems, especially an 18-volt or 24-volt DC or a positive ground system. SUB8100 help.retromanufacturing.com...
Installation Instructions Step #1 Install the Mounting Brackets Attach the mounting brackets to the bottom of the powered subwoofer using the machine screws from your mounting hardware. Step #2 Mount the Powered Subwoofer Make sure the mounting location allows adequate space for the amplifier to dissipate heat.
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Finally, plug your radio’s low-level RCA outputs (dedicated subwoofer output) into the RCA inputs (5) on the SUB8100. For radios that do not have a dedicated subwoofer output, follow the instructions on the next page to connect directly to the SUB8100’s high-level inputs.
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Installation Instructions Installation Without RCA Inputs LEFT - RIGHT - LEFT + RIGHT + LEFT - RIGHT - LEFT + RIGHT + GROUND TURN ON LEAD NOTE: This method should only be used when no RCA FUSE LEAD inputs are available. If your radio does not have RCA outputs, you can use the high-level input leads (white/white+black stripe, and gray/gray+black stripe) to connect your speaker wires directly to the powered subwoofer.
Controls Front Panel Controls Remote Gain Controls PHASE: The Phase Control (1) toggles polarity between 0º (normal) and 180º (reverse). When set to 0º, the powered subwoofer is in-phase (when the speakers move out, the subwoofer speaker also moves out). When this is set to 180º, the powered subwoofer is out of phase (when the speakers move out, the subwoofer speaker moves in).
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(8) when set to max, will set the gain on the powered subwoofer to 50%. More Ways to Elevate Your Sound! RetroSound® Speakers RetroSound® started in the speaker business and developed its radio line to be perfectly matched with RetroSound® speakers. Together RetroSound® Radios and Speakers produce the most accurate audio available for your classic car.
Troubleshooting Problem Problem Possible Cause Possible Cause Action to Solve Problem Action to Solve Problem Powered subwoofer 12 volt battery + wire not Check all connections for will not turn on connected or incorrect voltage proper voltage with a volt meter. Voltage range: 12-15 volts Check remote turn-on Remote turn-on wire not...
Specifications Power Usage Power Usage Voltage 10.5-16 volts DC Idling Current (ON) 0.4 amps Idling Current (OFF) <0.002 mA Amplifier Amplifier Output Power @ 14.4 volts 100 Watts RMS / 135 Watts Peak Signal to Noise Ratio >100dB Input Sensitivity 100 mV-6V Frequency Response 35Hz-160Hz...
ITEM ITEM WARRANTY WARRANTY SUB8100 One (1) Year During the "Parts" warranty period, there will be no charge for parts. You must mail in your unit during the warranty period at your expense. This warranty only applies to products purchased directly from Retro Manufacturing or an authorized dealer. This warranty is extended only to the original purchaser of a new product that was not sold "as is."...
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