![]() ![]() Part #: 090-280 Price: $0.73 x 10 - Project Box 5-1/4" X 3-1/4" Part #: 320-430 Price: $4. 4 The digital optical audio output doesnt support any sort of volume control, so if you plan to use it, youll need to control the volume entirely via the amp. Part #: 002-1.1K Price: $0.75 - 10K Audio Taper Stereo Potentiometer 1/4" Shaft. The specific parts I got from Parts Express are as follows: - 1.1K Ohm 1/2W Flameproof Resistors 10pcs. ![]() If you're building a mono mixer, you should just use single-ganged pots. That way each channel can be kept separate, and one knob will control both channels. Double-ganged means that one knob controls two inputs at the same time, which is necessary if you have stereo audio. Only 26 electronic components are needed to make a great sounding amplifier. You want a logarithmic pot (aka audio pot) because volume is on a logarithmic scale. Its much easier to analyze an amp circuit by studying its schematic than. Tools: - Soldering Iron and Solder - Dremel or Drill - Wire Strippers Parts: - 1K ohm resistors x8 - 10K ohm logrithmic double-ganged potentiometer x4 (* explained below) - RCA panel mount input jacks x10 - project box or other enclosure *About the Potentiometers: A potentiometer or 'pot' is the twisty knob that will act as a volume control. There are two methods of volume control using this DSP: 1) analog output attenuators - these are intended for matching maximum level to the connected amplifier and so are set once. I use a Symetrix 8x8 DSP which has 8 outputs. ![]() It is also relatively cheap, mine cost me about $20, but you can vary yours to fit your budget. Replace the mini dsp with a DSP unit intended for install use. This project requires few parts and tools. ![]()
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