Giant Posted May 12, 2009 Share Posted May 12, 2009 Folks I recently got a valve combo that sounds great clean but when I set the preamp higher, no matter the power amp's volume, I get this terribly awful ghost notes. It only happens on the G and B strings on any of my guitars, it does not happen with my other amps either solid state or valve driven, it gets worst when bending and it gets completely unbearable when bending both strings at once which I do a lot. Looking at posts here and all over the net I found thats a common problem with certain amps, does any of you know what can I do asido from sending it back the way it came? Link to comment Share on other sites More sharing options...
L5Larry Posted May 12, 2009 Share Posted May 12, 2009 Sounds like a tube problem. Generally it is a preamp tube that has gone "microphonic". Certain frequencies will cause a disturbance within the tube and the sound goes completely haywire. Replacing tubes is never cheap, so to confirm the problem try swapping tubes out, one at a time, from another amp until you find the culprit. You can also sometimes find a bad tube by lightly tapping on them (power on, volume up), and listen for rattles, static, etc. Link to comment Share on other sites More sharing options...
AXE® Posted May 12, 2009 Share Posted May 12, 2009 I have heard of his happening, but never experienced it Larrys advice sounds 'sound to me. If that doesn't work try swapping the positions of the tubes in different sockets. Link to comment Share on other sites More sharing options...
G u e s t Posted May 12, 2009 Share Posted May 12, 2009 Ahhh fuggit - somebody hadta call 'em..... Link to comment Share on other sites More sharing options...
callen3615 Posted May 12, 2009 Share Posted May 12, 2009 Does this have anything to do with homz's thread? Link to comment Share on other sites More sharing options...
Flight959 Posted May 12, 2009 Share Posted May 12, 2009 Ahhh fuggit - somebody hadta call 'em..... Are you drunk? Link to comment Share on other sites More sharing options...
G u e s t Posted May 12, 2009 Share Posted May 12, 2009 Sheesh - some guy who thinks he's a giant posts about ghost notes on his valve combo. I crack a joke about 'who yah gonna call..... Ghostbusters'. (I'll explain for maximum clarity - ghost notes -v- Ghostbusters, see the silly, inapropriate link, it's a joke) Next, the old bill are accusing me of being drunk. OK officer - nope, stone cold sober and not stoned either. Finger - nose, finger - nose. Stands on one foot, counts backwards 100 to 0, heel-toe-heel-toe straight line. Here's my licence, insurance, MoT. Humph. Yah have to be pissed to crack a joke around here?:- Link to comment Share on other sites More sharing options...
The Mick Posted May 12, 2009 Share Posted May 12, 2009 It is most likely your filter caps that cause this. It is a known problem. Take her to a good tech. funny how Eye was just joking about that in the ghost thread. Link to comment Share on other sites More sharing options...
Giant Posted May 13, 2009 Author Share Posted May 13, 2009 It is most likely your filter caps that cause this. It is a known problem. Take her to a good tech. funny how Eye was just joking about that in the ghost thread. And it was that joke you made what made me ask here (I was going to ask in some amp forum or something like that but after reading what you posted I though hey, what the hell lets ask here). Should that be an expensive fix? Link to comment Share on other sites More sharing options...
The Mick Posted May 13, 2009 Share Posted May 13, 2009 It's a common problem as for cost ? just depends Eye wouldn't say cheap though. What kind of amp is it ? is it a new amp or used ? Link to comment Share on other sites More sharing options...
AXE® Posted May 13, 2009 Share Posted May 13, 2009 The old JCM800 2x12 combos had that problem. Link to comment Share on other sites More sharing options...
The Mick Posted May 13, 2009 Share Posted May 13, 2009 The old JCM800 2x12 combos had that problem. My JCM 800 2205 head did as well Link to comment Share on other sites More sharing options...
Giant Posted May 13, 2009 Author Share Posted May 13, 2009 Its anew amp, don't know if you will know the brand but it's one of those clones that is said to be better than the original and guiding by the cost it should be. It does not get in the way too much anyway, I play only clean. Link to comment Share on other sites More sharing options...
The Mick Posted May 13, 2009 Share Posted May 13, 2009 Its anew amp' date=' don't know if you will know the brand but it's one of those clones that is said to be better than the original and guiding by the cost it should be. It does not get in the way too much anyway, I play only clean.[/quote'] Take it back. It will only get worse. Link to comment Share on other sites More sharing options...
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