#1
Well after having a fair amount of time to experiment with the sounds of the Peavey XXX, I have concluded that I get best, fullest, and smoothest distorted sound with the power amp up at least to 8.

Now since I'm in the basement most of the time, the only way I can get the power tubes cranked that high is to have the preamp turned way down. On the Crunch channel with the gain about 5 and the preamp volume set on 1-2, this results in a nice thick and full distortion sound.

Any downside to doing this?

Only thing I can think of is that there is now no possible way to get preamp clipping on the clean channel naturally, since the preamp volume needs to be 1-2, but with an OD pedal, that really isn't too big of a concern. On the flip side, the clean channel is really clean now.

Thoughts?
#2
You might burn through tubes faster depending on the bias of the amp. But it is perfectly safe, that is why there are those different knobs to turn and twist
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#3
Hot power tubes are the best!

If you want to explore even further you can bias the amp hotter. The power tubes are biased super cold from the factory so if you turn up the bias you can get that lovely grind at lower volumes and probably notice a bit more of that warm, throaty growl.

All of these things will reduce your tube life a bit, but modern tubes often blow out before they wear out anyway, and besides, what are tubes for if not to be played loud until they die?
#4
Attenuator time?
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#5
Interesting. I might have to try this with my 6505+. Just turn the preamp gain way down and the post gain up, right? God help me if I accidentally bump the preamp gain knob...
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#6
Quote by KailM
Interesting. I might have to try this with my 6505+. Just turn the preamp gain way down and the post gain up, right? God help me if I accidentally bump the preamp gain knob...


In theory, yes. In practice, I didn't put the master volume at 10, just about 8.

I notice quite a difference on a guitar with passive pickups. Actives, not so much, but still a difference.
#7
Quote by KailM
Interesting. I might have to try this with my 6505+. Just turn the preamp gain way down and the post gain up, right? God help me if I accidentally bump the preamp gain knob...

Might not have the desired effect. I believe the 5150/6505 series have super clean power amps and they let the preamp do most of the tone work. It's more complicated than that, but I haven't heard of anyone buying these amps for power tube saturation.
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#8
Yeah, it definitely depends on the amps. I've been playing a lot of Orange amps recently, and they behave very differently than what I'm used to, as I've spent the most time with huge 120W Peavey monsters, where the preamp gain is just preamp gain, and doesn't have a notable effect on volume. On more vintage styled amps, the preamp gain isn't really just a preamp gain, it's more like an additional volume knob. And both the master and preamp gains add volume, but in different places. It's weird and I'm not sure if I really like it. I like just having the volume, and the gain.
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#11
Pull two tubes. On those the pairs are side by side. So pull V5 and V6 or V7 and V8. That will drop the power in half allowing you to drive them harder at slightly lower volumes. If that isn't enough, buy an attenuator. Don't forget to flick the impedance switch on the amp down one notch.
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#12
Quote by Offworld92
Yeah, it definitely depends on the amps. I've been playing a lot of Orange amps recently, and they behave very differently than what I'm used to, as I've spent the most time with huge 120W Peavey monsters, where the preamp gain is just preamp gain, and doesn't have a notable effect on volume. On more vintage styled amps, the preamp gain isn't really just a preamp gain, it's more like an additional volume knob. And both the master and preamp gains add volume, but in different places. It's weird and I'm not sure if I really like it. I like just having the volume, and the gain.


I can upload a recording of me playing through my orange rockerverb 50. The clean channel (cranked) cuts 3 times better than the OD one when playing with my band or on recording

And Indeed cranking the gain does not increase volume much on this beasty. If anyhting turning the gain down and volume up instantly cuts 50% better with my band.

Quote by Cathbard
Pull two tubes. On those the pairs are side by side. So pull V5 and V6 or V7 and V8. That will drop the power in half allowing you to drive them harder at slightly lower volumes. If that isn't enough, buy an attenuator. Don't forget to flick the impedance switch on the amp down one notch.



This is what I did 8 years ago on a Marshall JCM 900. Good advice indeed. I remember playing for about 400 people, and the soundman waved at me that even with my channel strip on mute he could still not boost my band above me on his PA


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Last edited by xxdarrenxx at Oct 18, 2014,
#13
on my dual terror i have it set up for the volume at 10 and use the gain for adjusting loudness. you can really heat it up nicely.

the other channel is with the gain at 3:00 and volume wherever.

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BUT... my 18w and jtm45 are the secks when you hit those power tubes and cook them.
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