|Analog Line Level Preamplifiers , Passive Pre-amps, Crossovers, etc.|
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|9th May 2015, 03:35 PM||#1|
Join Date: Jul 2008
Location: Santa Clara, CA
LCDuino (arduino) R2R relay preamp
finally got around to boxing up my arduino-based analog preamp system:
info on the schematic, boards, arduino source/build code, etc at The α10 Stereo Pre-amplifier
chassis is laser-cut (also DIY) at techshop.
control is via IR remote but there are hooks (serial) for remote-remote control via web (etc).
range is 127.5dB in half dB steps.
vol control is motorized and is a control-element, only; no audio goes thru it. all audio is thru the latching relays in series/shunt/bypass topology.
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