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Vintage threads from the first ten years
Hum...Great Tone
 4/19/2000 10:56 AM |
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kPreston | Hum...Great Tone i've got a BFPrinceton Reverb with great tone, but it Hums. i've replaced the filter can and even tried descrete filter Caps. i've narrowed the Hum to the Tone stack preamp. when i short either side of the 3.3mohm resistor, the amps very quiet. i've resoldered the grounds. otherwise the amp is great. with the vol control at 0, the amp hums a little, but with the vol at 5 the amp is quiet and then hums again as the vol is turned up past 5. the vol and bass interact to move to quiet point and as the bass is turned up the amp Hums more. i've tried different tubes in the tone stack (7025, 12AX7A). i've balanced the Phase Inverter and output stage. any suggestions. -kp- |
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| Replies: |
| Rob W. Howdy! Trace Maybe you guys already tried this..... -- 4/19/2000 2:24 PM R.G. Try reading the Tube Amp Debugging ... -- 4/19/2000 2:29 PM Bruce Here's a trick I learned a while ba... -- 4/19/2000 3:53 PM don umm...have you checked the reverb c... -- 4/19/2000 5:13 PM Ray Ivers Howdy, kPreston I've tried it all... -- 4/19/2000 10:20 PM kPreston Fixxxxed... -- 4/20/2000 11:25 PM kPreston Kick the Can... -- 4/21/2000 11:30 PM |