None of my tube amps act right unless I have the master volume past noon.
Absolutely. I never use master volume amps for that reason, I'm running a straight tube Fender Super Reverb and a Peavey MX, but only the clean channel on the MX. (solid state preamp into tube power amp) Neither is a master volume style amp. The gain channel does have a Master volume, but it's a separate channel and I don't use it. I checked out an attenuator a friend has, he was going to give it to me but it won't do 2 ohm for the Fender, so it wouldn't be very useful to me. The MX is for cleans, it does a great job no matter what volume level I run it, so I don't need an attenuator for it. Totally clean no matter what. I'd like to have an attenuator for the Super, it sounds best cranked to 10, and sometimes that's too loud.
Fortunately I have a volume pedal that lets me control the volume very well for low key rhythm parts and let it scream for the leads. Often I have to start the night with it around 6 or 7, and can't get the sound I want, mainly because it's just starting to make the power tubes work a little. It gets a great clean sound, but not loud enough, but that's why the MX is onstage. I've played it everything from bedroom volume to cranked to 7 (about 1 o'clock) and only at bedroom volume does it start getting wimpy sounding. Get the volume above 3 and it's great, from there on it's clean as it gets and can handle any volume level quite well. Usually the volume never tops 4 or so onstage, it's 130 watts and running through a Kustom 2x12, it gets way loud if I let it...it will even play clean leads over a cranked full stack 100 watt Marshall...with headroom to spare...
I'll have to do some looking, I ran across online schematics for a do it yourself attenuator a while back but didn't save the link, like a dummy...
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