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Where can I buy a cheep four or eight channel bandpass filter? Answered

i want to build device that will contain LEDs. Each LED will light up to a different frequency. I believe this is the part that i need for this, is it not? if so does anyone know where to get them?

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sound91

10 years ago

I have one, but I'm not selling. It is more fun to make your own, and it isn't too hard.

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seandogue

10 years ago

ebay. gut an old hifi equalizer for it's circuitry