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Egnater / Randall Modular Amps
RM50 master volume issue - need help
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<blockquote data-quote="Sven S.-M." data-source="post: 145754" data-attributes="member: 192"><p>Hi fellow tube amp lovers</p><p></p><p>I have a RM50 Silverface Combo which I haven't played for some years, but now I've started to play it again only to find out it has a volume problem of some kind. That bums me out. It's a nice amp, but rather useless as it is!</p><p></p><p>The trouble is that the volume level rises after a couple of minutes of fiddling, like if you kick in 15 or 20 dB boost pedal only without driving the tubes, and when this happens the master volume pot fails - on the amp, not the modules. It's the same whether I play channel 1 or 2 and regardless which modules are in the amp. I've also experienced the volume to drop significantly. But right now volume only rises unexpectedly.</p><p></p><p>What to look for? I have checked power tubes JJ 6L6 with very little wear, they're both good - bias 21-22 mV. Amp sounds pretty "normal", no crackling or weird noises or smells. It has never been pushed hard, only played at small club and bedroom levels.</p><p></p><p>What can cause this kind of volume issue you think? </p><p></p><p>Cheers</p><p>/Sven</p></blockquote><p></p>
[QUOTE="Sven S.-M., post: 145754, member: 192"] Hi fellow tube amp lovers I have a RM50 Silverface Combo which I haven't played for some years, but now I've started to play it again only to find out it has a volume problem of some kind. That bums me out. It's a nice amp, but rather useless as it is! The trouble is that the volume level rises after a couple of minutes of fiddling, like if you kick in 15 or 20 dB boost pedal only without driving the tubes, and when this happens the master volume pot fails - on the amp, not the modules. It's the same whether I play channel 1 or 2 and regardless which modules are in the amp. I've also experienced the volume to drop significantly. But right now volume only rises unexpectedly. What to look for? I have checked power tubes JJ 6L6 with very little wear, they're both good - bias 21-22 mV. Amp sounds pretty "normal", no crackling or weird noises or smells. It has never been pushed hard, only played at small club and bedroom levels. What can cause this kind of volume issue you think? Cheers /Sven [/QUOTE]
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Modular Amps
Egnater / Randall Modular Amps
RM50 master volume issue - need help
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