It might also depend on how good your hearing is too. My associate, now 63 can't hear the hiss of the wind noise circuit unless he turns his head directly towards a loudspeaker. This comes with many years of tuning and voicing rather loud pipe instruments. ;)
You may have to listen while in direct line of sight of one of the speaker cabinets. You might also check the tweeters in the speaker cabinets to make sure they are also operational.
At 09:09 PM 12/30/2007, you wrote:
Hi all, I recently acquired a Rodgers Cambridge 220-II organ in mostly-working condition. I'm working on fixing the non-working parts and the air sound has me flummoxed. I can't hear any difference between when the air sound is on and off. (I assume that means it isn't working -- this effect isn't so subtle that it's completely inaudible, is it?) Working from the schematics in the technical manual, all of the inputs to the board look good and none of its components are obviously bad. Anyone have any suggestions? Can I even troubleshoot this without a scope?
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