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Ok! Thanks all of you for the great information. Since the MM is stock as I bought it in 82 I think a good work around would be just find a nice 40 or 50...
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6l6 to el34 tube swap?
I'm sure many will think this is a question that we all should know the answer to so I may be the only one. I have a MMRD50 with 6l6's and wondered if el34's...
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I just noticed that the Raw Control is a separate pot in addition to the Mid pot. I know Hasserl has an Attitude Mod in which a pot controls the NFB in the...
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Thanks Jazz!
By experiment I'm not quite sure I know what you mean? Since it would not be a switch to bypass the tone stack completely, as in a...
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Can I "Raw Control" or Tone Stack bypass pot?
My Carvin VT50 has a 25k pot on the Midrange control. I do not know the Allen Amp raw control circuit but wondered if I could replicate it by increasing my...
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Opinions are just that. I'm not so into "alternative facts". What sounds good is subjective. Design principles are important guidelines when building...
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Nice sounding sound/video clips pdf64! Not being a EE I sometimes look to "tone guru's for opinions. But I am aware that not everything you read on the...
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Interesting inputs. So why an AT over a AY in the PI position? And please explain the need to change the plate resistors for the AT or AY in the PI posit...
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12AY7 PI tube, good, bad or ugly? Your thoughts please.
Morning! I have put a 12AY7 in my Carvin Belair (VT50) style amp. EL84's ect. I seem to be getting a bit more compression in the sound which also seems to...
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No preamp Chuck H. Thanks Enzo,it may be a week before I can tear it down and start checking voltages. BTW some time ago I adjusted the bias up in the low...
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Ok, finally got to plug into the FX Return jack and I still have a distorted sound with hard pick attack! So does that sound like caps or tubes? If caps which...
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Dave H, I read up on Rob's page and it is exactly what I was looking for. Thanks!!
Thanks again to all that responded, greatly appreciated!
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Thanks for the link Dave H, I'll read up on it! Chuck H, I realize that the early breakup and interaction between the channels is a great asset and the draw...
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Thanks for the feedback JPB. I may agree but without trying it I would never know.
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Need help with 5e3 volume/tone mod, please.
I built a 5e3 that I like, however. I would like to mod it to remove the volume/tone interaction to see if I like it. Trouble is searching the internet I...
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Thanks g1! I greatly appreciate the response. That should tell me if the problem is in the preamp or output stage. Should the output of the guitar will be...
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Carvin VT50 problem, need help please.
My older VT 50 head is in need of some help. When I hit the strings hard I get a buzz/electronic noise,(definitely in the amp). I think this could be a cap...
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5e3 Volume mod?
Morning all! I am aware of some of the various mods to extend the headroom of the 5e3 so that breakup comes in later. My question is can the circuit be modified...
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Thanks to Mike, Chuck and Richard for being a bit more concise! I was actually looking for engineering comparisons as well as tonal!
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