Category Archives: Stereo Sound Systems

Wall Adapter Power Line Hum Filter

For those of us struggling with 60Hz hum from wall adapters, here is a nice device that flattens out that hum to near Zero. Construction Project Here This project worked right away and needed only some minor adjustment to voltages. … Continue reading

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Aviation Headset Interface for Amateur Radios

Aviation Headset Interface for Amateur Radios V2.0 I had completed version number two some time ago with the help of a nice aluminum chassis, a Hammond 1590B case that is popular with the Guitar Pedal and the Box Mod enthusiasts. … Continue reading

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DIY MOSFET Headphone Amplifier

DIY  MOSFET Headphone Amplifier This project works really well and is based on two MOSFET per channel. A MPF102 in each input and a IRF510 in each output.   The chassis is the main heatsink for the power MOSFET’s   … Continue reading

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Sound Design 4491C Stereo Multiplex

Repaired and cleaned up a nice Stereo AM/FM 8 Track Player that had a bad output on the left channel. Sound Design Composite Multiplex Stereo Player

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