Audio input question

[Paul Schreiber]

1) For RF rejection, use a 100pf cap on all ins and outs to ground. Don't go over this, or you may have op amp
drive problems.

2) Use 0.22mfd for audio AC inputs.

Paul Schreiber
Synthesis Technology


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From: 	[22Hz] Productions[SMTP:aphex at ksu.edu]
Sent: 	Sunday, May 25, 1997 3:50 AM
To: 	analogue at hyperreal.com
Cc: 	synth-diy at horus.sara.nl
Subject: 	Audio input question


	To reject RF crap in an audio input jack, approx. what value 
cap should I use to ground, and what (if anything) should I use in the 
audio path to buffer the input a little? (.01uF cap is in at the moment, 
and no cap to ground.) Will a teeny cap + pot here work alright to 
buffer/decouple it a bit and allow level control? If so, what value cap 
do you recommend? Not terribly urgent/important, just curious. =) TIA-

	Jason