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At 7:01 PM -0700 8/26/98, floyd@voicenet.com wrote: >This little quirk in my EDP has been starting to bug me.... >It's running Loop3, v5.0. > >When I hold the record button long enough to clear the >current loop it puts out a noticeable pop, or thump. >Is there some way to fix this ? actually, yes, you should be able to fix that. Requires that you actually get into the box, though. There's a trimpot on the PCB, near the left side, by the volume knobs. It's job is to trim a dc offset from a VCA. Sounds like your's is not set right for some reason, which would cause the thump you hear. To set it you need to run one of the built in diagnostic tests. The test basically turns the VCA on and off at about 60Hz, so if there is an offset you can hear the resulting tone in an amplifier. (or see it on a scope, whichever way you like.) While that's going, you set the trimmer until the tone/waveform reaches it's mimimum. To get into the trimmer test, Start the unit while holding the Parameter and Record buttons down. Keep them held while the startup screen goes by, until the display shows all t's. Then let go. Should say 7F. Press parameter so the "Keys" LED is lit, then press Insert to start the trimmer test. Pressing Parameter again will stop it after you set the trimmer. Then you can turn it off and power back up normally. kim ______________________________________________________________________ Kim Flint | Looper's Delight kflint@annihilist.com | http://www.annihilist.com/loop/loop.html http://www.annihilist.com/ | Loopers-Delight-request@annihilist.com