Transformerless VariMu Gain Switch PCB's

[thelivingroom]

These are the Gerbers for the 12-step coarse (Lorlin 1x12) and 23-step "finer" coarse (Elma 04 1x24, set to 23) gain switches that I used in my Transformerless VariMu build. Also attached are the schematics.

LR_Heikki_12-Step_Gain_Schematic.pdf

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LR_Heikki_12-Step_Gain_Gerbers.zip

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LR_Heikki_23-Step_Gain_Schematic.pdf

(115.53 KiB) Downloaded 4 times

LR_Heikki_23-Step_Gain_Gerbers.zip

(39.15 KiB) Downloaded 5 times

[thelivingroom]

These are the measurements of both switches in my build, with 1kHz @ +4dBu measured at the output connector in both Bypass and after trimming the output when engaged and set to position 7 (12-step) or 13 (23-step), with Threshold off. Output was connected to the input of my AD converters.

LR Heikki VariMu Gain Measurements.pdf

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