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relay volume control | diyAudio
https://www.diyaudio.com/community/threads/relay-volume-control.361973/
Straubing. 2020-10-23 11:54 am. #2. 2020-10-23 11:54 am. #2. You can have a look here: schematic.pdf * master * Jurgen Herrmann / VolCtrlDR * GitLab. The project is basically A BPPBP (preamp by Bruno Putzeys) with relay volume control (0 to -63dB). The whole repository including Kicad files is here: Projects * Jurgen Herrmann / VolCtrlDR * GitLab.
Audio Volume Relay Attenuator with IR Control
http://www.vaneijndhoven.net/jos/switchr/design.html
The front PCB handles the IR signal decoding and 7-segment display control, the relay PCB handles the audio. The kit provides all other components to be mounted on the PCBs for your own soldering. The fully mounted 'relais' PCB. The tiny G6K-2P relays behave fine for audio. The diodes, voltage regulator IC, and elco provide a 5V supply voltage.
Only Mechanical Relays Will Do For Automated Hi-Fi …
https://hackaday.com/2018/03/10/only-mechanical-relays-will-do-for-automated-hi-fi-audio-source-switching/
That is the philosophy that lies behind [Skrodahl]’s relay-based audio switching board, which boasts 5 high-quality relays each handling a stereo input, with their control passed either to a rotary...
Audio Volume Control Attenuator with IR ... - Electronics DIY
http://electronics-diy.com/audio-volume-control-attenuator-with-ir-control.php
Extra relay PCBs allow a multi-channel input select and volume control, for 5.1 or 7.1 sound, or for stereo audio with balanced (XLR) connections. The circuit operates from an AC powersupply voltage of 6.0 to 7.5 volts. For tube amplifier builders: …
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