Electronic projects |
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Audio - preamps, filters, effects
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Low pass audio filter for subwoofer with TL064 integrated circuit
author: Soulis Papanastasiou visits: 64389 
Powerful guitar amplifier with preamplifier included.
author: RED Free Circuit Designs visits: 26401 
60w amplifier designed for bass. Preamp included.
author: RED Free Circuit Designs visits: 25776 
Small digital volume control device. Modernize your amplifier.
author: visits: 15994 
Simple add-on module. Switchable "Control-flat" option.
author: RED Free Circuit Designs visits: 14956 
High-quality modular design. 9V Battery powered - Very low current drawing. Preamp, tone control, mixer - all in one
author: RED Free Circuit Designs visits: 14767 
Digital volume control for your audio device with only few components.
author: visits: 12804 
Low distortion bass and treble control for amplifier
author: Tasos Anagnwstou visits: 11276 
Stereo Preamplifier with Bass-boost project
author: RED Free Circuit Designs visits: 11170 
Simple circuitry suitable for moving-magnet cartridges. Passive high-frequency equalization
author: RED Free Circuit Designs visits: 6111
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