Members tech21man Posted April 14, 2012 Members Share Posted April 14, 2012 I also have the 40 combo right now and I can say that you have to watch the reverb, at least on mine it is pretty noisy, also were you plug it into also seems to affect it sometimes. It can develop something like a loud hum. Other times it is almost dead silent with full on gain!!! Also check your tubes. Peavey states three preamp tubes on the super 40 but there are 4 in that little bugger...maybe it has the same preamp with its bigger brothers after all, schematic seems off after finding it has 4 preamp tubes!!! Link to comment Share on other sites More sharing options...
Members JR.junior Posted April 14, 2012 Members Share Posted April 14, 2012 Thx! Yes amp has four 12ax7 tubes and two 6l6 outputs. I have volume knob right down to zero, but amp generat noise through the speaker. It should be silent. Weird. Link to comment Share on other sites More sharing options...
Members M-III Posted April 16, 2012 Members Share Posted April 16, 2012 Could be a grounding issue, does it do this with the guitar unplugged or all your effects unplugged? That can help isolate it...Also check for any other sources of interference, like wall warts/power bricks from nearby electrical devices, TVs, etc, etc.Also, if you have any spare preamp tubes, replace each one and test the amp on the gain channel to see if it still does it. You could have a preamp tube going microphonic and causing the noise.Hope this helps! Link to comment Share on other sites More sharing options...
Members JR.junior Posted April 16, 2012 Members Share Posted April 16, 2012 Thx! I've changed all the tubes, still white noise, and yes guitar, fx.. all unplugged. Link to comment Share on other sites More sharing options...
Members M-III Posted April 16, 2012 Members Share Posted April 16, 2012 If it's still doing that after all of that, then it sounds like a trip to the amp tech is in order because that's not normal. The amp has built-in noise reduction circuitry on it on the gain channels and that should get rid of most of the white noise at low volumes while it's on distortion,(doesn't help much at high volumes) but if it's doing it on the clean channel too then it's definitely something else... Sorry I don't have better news man, hope you get it sorted out! Link to comment Share on other sites More sharing options...
Members Iron Lotus Posted July 27, 2012 Members Share Posted July 27, 2012 Originally Posted by M-III Haha, not bad man! But here is a piece of advice from someone who's already tried it, I do hope you used some good primer on the knobs first! While a coat of industrial strength flat black can last a pretty good while, it's not permanent/strong enough and it will eventually start cracking and flake off... Paint will not adhere to chrome very well without a good primer coat. Yea, I learned this the hard way...However my next suggestion is looking for some knobs HERE.Oh yea, here's my amp with it's current "revised" look, newer semi-gloss black plate with knurled black knobs with white dimples. Yeah I like that, very metal looking indeed. The 2nd picture with the diamond plate and white indicator/black knobs. Link to comment Share on other sites More sharing options...
Members M-III Posted July 27, 2012 Members Share Posted July 27, 2012 Haha, thanks for the bump Iron Lotus! I had almost forgotten about this ancient and ever-living thread... Yep I still have my amp looking like that man, good luck finding some diamond plate powdercoated black, cut and drilled to those dimensions like that... *sigh* Link to comment Share on other sites More sharing options...
Members shane159 Posted December 23, 2012 Members Share Posted December 23, 2012 Link to comment Share on other sites More sharing options...
Members p4vl Posted February 26, 2013 Members Share Posted February 26, 2013 Up from the Tombs it comes... Planning to sell my Engl Screamer head. The Peavey xxx 2x12 is still here, sounding better than ever with EL34's and the 2x12 cab with v30's I bought for the Screamer. Link to comment Share on other sites More sharing options...
Members Riffs4dayz Posted March 16, 2013 Members Share Posted March 16, 2013 My XXX has all Mesa tubes in it , I custom the head so it wouldnt get so hot inside few Led's , modified Ibanez tube screamer from PROFXPEDALS , NS2 , out the XXX cab and this thing runs better than my friends Mesa roadster Link to comment Share on other sites More sharing options...
Members p4vl Posted March 30, 2013 Members Share Posted March 30, 2013 I'd like to note that one of the reasons I'm planning on keeping my XXX is that a tech accidentally installed JJE34L's instead of EL34's. I later had to have it repaired, as the internet lore about XXX's & E34L's is no bull{censored}, but it was worth it. Link to comment Share on other sites More sharing options...
Members bobpick68 Posted April 12, 2013 Members Share Posted April 12, 2013 Have a question. I am picking up a Triple XXX 2x12 Combo tomorrow on a fair trade (2 mackie TH15A's) and I have been reading here through many pages and it seems the consensus is to run EL34's (not E34L's) and put a 12dw pre tube in V2. I do have a matched pair of EL34's labelled Marshall. Obviously in order to use the EL34's for the time being I would have to pull the two outers and re-bias which I am comfortable with. Finally my question is.. would a NOS Sylvania 12AV7 work similarly? According to this the AV7 has a gain factor of 41 compared to AX7's gain factor of 100. I'm guessing it would give the desired effect. I know it really tames my Peavey Windsor a little too much but I'm thinking it would work well in the Triple XXX. I have a slew of those tubes. Picked em up at a flea market years ago for 50 cents each so I bought the guy out of all 8 he had. What are your thoughts? Oh BTW I do plan on playing through the amp first to see if I like it "as is". Link to comment Share on other sites More sharing options...
Members sahlomonic Posted September 16, 2013 Members Share Posted September 16, 2013 Well, after a few years I renewed my Lounge membership. Traded one of my amps for the XXX, and the guy said he had no use for the XXX cab so it came with it for free. Picking up right where I left off about 4 years ago when I sold my last Triple XXX. Crushing palm mutes I just wasn't getting with my other amps so glad to have this back in my stable. So, anybody have a XXX faceplate they'd like to sell me? Link to comment Share on other sites More sharing options...
Members Jevanski Posted April 26, 2015 Members Share Posted April 26, 2015 I read through all these posts lots of times and tried many different tube cocktails LOL. I right now have JJ Kt77 for power tubes, and jj ecc832 in V1 and V2. jj ecc83s in V3 and V4. Right now these just sound right for me. The clean is not as harsh anymore and the gain knobs are more usable, not just in your face! Link to comment Share on other sites More sharing options...
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