I posted something earlier about master volumes on a 2 channel dual rec. I tried using the active master as the overall master and the amp is super quiet. I put all the masters all the way up and it barely started to move the speakers. :? When I bypass the active master and just use the channel masters, it's at about 8 o'clock and loud as hell. :shock: I have to be VERY careful about both channel masters because they are ultra sensitive. Is it possible that I have bad volume pots on both channels? Are the older dual recs this sensitive with the master volumes? HELP! I don't have anywhere here where I live to take it to get looked at. I live in Wyoming, ugh. Thanks.
HELP!!
- Thread starter sideburns
- Start date
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If I understood you correctly, you're using the "output" knob as the amps master volume. Make sure you have your FX send knob on the back turned up a bit. If it's all the way at minimum, you'll hardly have any volume at all even with everything cranked. Try the following for starters
Channel master @ noon
FX send at 9:00 (you don't actually need anything in the loop)
FX return - doesn't matter...
FX loop - On or Footswitch...doesn't matter
Output at 8 or 9:00
Hope that helps...
-Wrake
Channel master @ noon
FX send at 9:00 (you don't actually need anything in the loop)
FX return - doesn't matter...
FX loop - On or Footswitch...doesn't matter
Output at 8 or 9:00
Hope that helps...
-Wrake
jbird
Well-known member
Channel masters around 11:00-Noon.
Send and Return Noon-1:00.
Loop on Both Orange and Red (or either).
Yellow Loop Active light should be lit.
Master should be active with same sensitivity as original channel masters!
Send and Return Noon-1:00.
Loop on Both Orange and Red (or either).
Yellow Loop Active light should be lit.
Master should be active with same sensitivity as original channel masters!
jbird
Well-known member
Oh Ya! I still prefer the tone with the loop bypassed! :twisted:
NoGlassNoClass
Well-known member
If its a bad pot, I would suspect the loop send on the back of the amp. More likely is the preamp tube in the V4 spot (loop driver). If you normally dont use the loop for anything, it could be dead and you would never know it, as it is removed from the circuit when the loop is bypassed. Try swapping a known good 12AX7 in the V4 spot and see what happens.
NoGlassNoClass
Well-known member
Also maybe a loose or dirty jack in either the send or return. Take a short instrument cable and just hook them together.
I tried what you guys told me to at practice today and I feel like an idiot. 
I didn't know you had to have the effects send knob turned up to make the active master work. Like I said, I've only owned a Mesa for a couple months. And I had hand surgery right after I got it, so I have only played it like 4 or 5 times now. Thanks for all the help though, it worked for me!!!
I didn't know you had to have the effects send knob turned up to make the active master work. Like I said, I've only owned a Mesa for a couple months. And I had hand surgery right after I got it, so I have only played it like 4 or 5 times now. Thanks for all the help though, it worked for me!!! 
