Members groovetube Posted September 24, 2010 Members Share Posted September 24, 2010 I was puttering around last night with the trimpots on a few of my pedals and decided to see what, if any difference pulling 2 power tubes would make to my amp. From some info I gleaned here, it doesn't matter if you pull the two inner tubes or the two outer ones, so I just decided to pull the two inner EL-84's. The result was immediately noticeable. Not just like something I wanted to hear (def. not a placebo effect) but a really big difference.I can't believe I never did this in the past! One thing I have to point out is that, for various reasons, I've never cranked my amp. I did a few years back with crappy old speakers and ancient tubes, but that doesn't count. So anyway, I generally play my amp at low volumes. The Peavey Classics have a killer clean channel at any volume, but I've never been able to use the lead channel because at lower volumes it, well, kinda sucks. So basically I've been using a delay in the loop and fuzz/OD/distortion pedals out front and getting great results. But now, OMG, with those 2 tubes removed, the lead channel sounds ridiculously f#$kn awesome. It has this grinding, fat, distortion that kills now. I'm so amazed I'm even writing this CSB thread. Damn this lead channel is the tits now, especially pushed with the Pork Loin. Anyone thinking of doing this, just do it! Oh yeah, and now I have 2 good spare EL-84's Link to comment Share on other sites More sharing options...
Members Shask Posted September 24, 2010 Members Share Posted September 24, 2010 Was you sure to change the impedance as well? Link to comment Share on other sites More sharing options...
Members groovetube Posted September 24, 2010 Author Members Share Posted September 24, 2010 no i didnt do that but everythings kosher after a few hours of jamming Link to comment Share on other sites More sharing options...
Members Shask Posted September 24, 2010 Members Share Posted September 24, 2010 When you pull the tubes, you have to change the impedance. I can never remember if you half it, or double it though. Maybe someone else will know for sure... Link to comment Share on other sites More sharing options...
Members EdgeOfDarkness Posted September 24, 2010 Members Share Posted September 24, 2010 no i didnt do that but everythings kosher after a few hours of jamming Link to comment Share on other sites More sharing options...
Members groovetube Posted September 24, 2010 Author Members Share Posted September 24, 2010 is it lower it or raise it? anyone? Link to comment Share on other sites More sharing options...
Members thenakedarab Posted September 24, 2010 Members Share Posted September 24, 2010 is it lower it or raise it? anyone? Halve it. Oh, and don't worry. Most amps can more than handle an impedance mismatch for a while. Just don't go doing it regularly. Link to comment Share on other sites More sharing options...
Members groovetube Posted September 24, 2010 Author Members Share Posted September 24, 2010 I am facepalming myself for not doing this the 1st time I heard about doing this YEARS AGO!!! Link to comment Share on other sites More sharing options...
Members Slaymoar Posted September 24, 2010 Members Share Posted September 24, 2010 Halve it.Oh, and don't worry. Most amps can more than handle an impedance mismatch for a while. Just don't go doing it regularly. No, it doubles. Twice the impedance coming from the tubes, needs twice the speaker impedance to match it. Link to comment Share on other sites More sharing options...
Members thenakedarab Posted September 24, 2010 Members Share Posted September 24, 2010 No, it doubles. Twice the impedance coming from the tubes, needs twice the speaker impedance to match it. An 8 ohm speaker would be plugged into the 4 ohm speaker jack, a 16 ohm speaker into the 8 ohm jack. Link to comment Share on other sites More sharing options...
Members Slaymoar Posted September 24, 2010 Members Share Posted September 24, 2010 An 8 ohm speaker would be plugged into the 4 ohm speaker jack, a 16 ohm speaker into the 8 ohm jack. Thats right. Link to comment Share on other sites More sharing options...
Members groovetube Posted September 24, 2010 Author Members Share Posted September 24, 2010 I have 2 16 ohm V30's in my amp. I have two jacks to plug the speakers into the amp, one is 16 ohm and one is 8 ohm. Right now I have pulled out the 2 inner EL-84's and have the speakers plugged into the 16 ohm jack. should I change it or keep it? its fine right now but I DONT wanna f#$k it up help me Link to comment Share on other sites More sharing options...
Members Valtiel Posted September 24, 2010 Members Share Posted September 24, 2010 Just smoke some pot bro, it'll all be fine. Link to comment Share on other sites More sharing options...
Members groovetube Posted September 24, 2010 Author Members Share Posted September 24, 2010 despite the avatar, I don't smoke. I'll drink some beers though! Link to comment Share on other sites More sharing options...
Members groovetube Posted September 26, 2010 Author Members Share Posted September 26, 2010 I have 2 16 ohm V30's in my amp. I have two jacks to plug the speakers into the amp, one is 16 ohm and one is 8 ohm. Right now I have pulled out the 2 inner EL-84's and have the speakers plugged into the 16 ohm jack.should I change it or keep it?its fine right now but I DONT wanna f#$k it up help me bump. need help here plsi dont wanna hurt my amp Link to comment Share on other sites More sharing options...
Members Kap'n Posted September 26, 2010 Members Share Posted September 26, 2010 hope it's not cathode biased. Link to comment Share on other sites More sharing options...
Members groovetube Posted September 26, 2010 Author Members Share Posted September 26, 2010 hope it's not cathode biased. gee thanks for the insightful BS Link to comment Share on other sites More sharing options...
Members Spaced Out Ace Posted September 26, 2010 Members Share Posted September 26, 2010 Link to comment Share on other sites More sharing options...
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