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Original Message
RE: more on Hk W-5m restoration, passive preamp?
Posted by Tre' on June 20, 2012 at 13:32:22:
If you use a 100k pot it's output impedance will be 25k when adjusted to -6db.
If you have 200pf of cable + Miller capacitance the -3db point will be 32kHz. The phase will be off all the way down to 3.2kHz.
Get a autoformer volume control from Dave.
Tre'