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This is a bare monoblock amplifier board for car audio, built to drive one subwoofer from a 12V supply. ePathChina rates it at 600W peak and 150W RMS into 4 ohms, with a claimed 30Hz–280KHz frequency range and 75–90dB signal-to-noise. It is a board for DIY installs, not a finished amp: you supply the wiring, enclosure and mounting. Against branded monoblocks it offers far less power and no tuning controls or certified ratings, so it suits budget builds and small subwoofers rather than serious bass systems.
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Lowest price we've seen: $22.99 on Nov 13 at Amazon. Tracked across 1 store since Nov 13.
This is a 12V mono channel amplifier board for car subwoofers. It is rated at 600W output power and 150W RMS into 4Ω. It can drive 8 to 12 inch woofers, including double voice coil speakers.
The housing is metal, with aluminum alloy cooling holes that expose more surface to the air to help dissipate heat. The board uses non-inductive high-power resistors that support high-temperature operation, and a coil transformer that keeps the size small. It also has capacitors and a fuse that disconnects automatically if the circuit shorts.
Connect the 12V input directly to the battery's positive terminal, not to a positive wire found elsewhere in the car. Connect the GND terminal to the negative side. The middle terminal of the three-terminal power connector is the REM control line. Wrap any exposed connections in electrical tape and keep them from touching the car body to avoid a short circuit.
