300W Subwoofer Power Amplifier

  
High power amps are not too common as projects, since they are by their nature normally difficult to build, and are expensive. A small error during assembly means that you start again - this can get very costly. I recommend that you use the PCB for this amplifier, as it will save you much grief. This is not an amp for beginners working with Veroboard! The amplifier can be assembled by a reasonably experienced hobbyist in about three hours.
300W Subwoofer Power Amplifier - schematic




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