Members gr8fuldodd Posted December 20, 2006 Members Share Posted December 20, 2006 Why am I hearing a faint, but perceptible high pitch whistle along with a faint hum? DRRI less than 6mos old Link to comment Share on other sites More sharing options...
Members NiCkMiLnE Posted December 20, 2006 Members Share Posted December 20, 2006 preamp tube? Link to comment Share on other sites More sharing options...
Members gr8fuldodd Posted December 20, 2006 Author Members Share Posted December 20, 2006 what if one power tube is glowing much brighter than the others? is that normal? Link to comment Share on other sites More sharing options...
Members erksin Posted December 20, 2006 Members Share Posted December 20, 2006 Originally posted by gr8fuldodd what if one power tube is glowing much brighter than the others?is that normal? No. DRRIs are pretty hard on power tubes - if you're playing it often and cranking it up you might be due for a change by now. Preamp tubes are usually the ones to whistle though... Link to comment Share on other sites More sharing options...
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