#1
Well, basically I own a Vox AC15 and I get to fully crank it on occasion here and there. It's a glorious tone of course, but I've been noticing that once I get to about 11 or 12 o clock on the master volume, not only can I not really tell a difference in volume (which I know is fairly common on tube amps), but I can't really hear an increase in gain either... It definitely feels tighter and more responsive as I go higher, but shouldn't driving the EL84's that hard produce a substantial amount of more gain? I'm not trying to get metal tone or anything, just kinda curious. Tubes are stock, if that info matters.
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>Fender Jagstang / Epiphone SG Special / DIY/GFS Partscaster
>SBN Big Daddy Amp Blaster / Boss OS-2 / Line 6 DL-4 / DIY guitarpcb.com D'Lay
>Vox AC15C1 / Marshall 4x12
#2
Don't quote me on this, but I think power tube crunch gives more mids to the tone but not much more gain. I could be wrong though.
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#3
AC15s just aren't high gain amps. The most you will ever, ever get out of it will be something roughly equivalent to a very dirty blues rock tone.
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#4
Quote by Natrone
AC15s just aren't high gain amps. The most you will ever, ever get out of it will be something roughly equivalent to a very dirty blues rock tone.


very true. those amps are designed to stay fairly clean regardless of volume.
#5
Quote by Ibanez734
Don't quote me on this, but I think power tube crunch gives more mids to the tone but not much more gain. I could be wrong though.

You've got your terms pretty screwed up, but you're on the right track. 'Power tube crunch' doesn't really refer to anything. 'Crunch' is just a side effect. What you're doing by cranking the amp is starting the tubes to 'clip' the signal. 'Clipping' in a tube amp creates distortion, and as you said a bit of a mid boost. 'Gain' is the signal level. Turning up the 'volume' or 'master volume' knob is literally increasing gain.
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