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The woes of having too much power

Discussion in 'Amps and Cabs [BG]' started by JellinWellen, Oct 13, 2013.

  1. JellinWellen


    Oct 18, 2012
    So I was doing an experiment to see if I could get some power tube grind out of my VB-2. So I cranked the master all the way up and the gain was all the way off.

    I started dialing in some gain (im on the OD channel since the clean channel is extremely difficult to distort) and at around 2-2.5/10 It sounds better and better.....except its like an earthquake is shaking my house.

    "It's not fair, there was time now....It's just not fair"
  2. two fingers

    two fingers Opinionated blowhard. But not mad about it. Gold Supporting Member

    Feb 7, 2005
    Eastern NC USA
    I once had some noisy neighbors upstairs in an apartment. I kept asking them nicely to quit practicing their skinhead rap while I was home. They didn't listen. So one day I brought home my SVT II and Ampeg Isovent cab (2-10s and 2-15s in one cab) and let it eat. I was told later that I shook lots of pics off their walls, and even broke a skull candle that was on top of their fridge. It vibrated and fell off.
  3. WretchedExcess


    Jul 29, 2013
    one word: attenuator
  4. JellinWellen


    Oct 18, 2012
  5. JimmyM

    JimmyM Supporting Member

    Apr 11, 2005
    Apopka, FL
    Endorsing: Ampeg Amps, EMG Pickups
    I have a B-15. I can dial up power tube grind and not get fired from my gigs. 200w of cranked all-tube power is not shy, bro. It will hurt in a big enough cab.
  6. beans-on-toast

    beans-on-toast Supporting Member

    Aug 7, 2008
    Nothing like an SVT and big cab for lease breaking parties. It usually only takes a few minutes to someone to come a knockin.
  7. Vintage-Blue

    Vintage-Blue Gold Supporting Member Commercial User

    Feb 13, 2008
    Cincinnati, OH
    Owner, Vintage Blue (repro cabinets)
    Burgess Meredith in "The Twilight Zone", if I'm not mistaken? (great episode BTW...)
  8. Do they make them in such high power versions? I understand most of them won't handle anything above 100W, and some bass heads go to 400W...
  9. JellinWellen


    Oct 18, 2012
    Yeah spot on!
  10. Hopkins

    Hopkins Supporting Member Commercial User

    Nov 17, 2010
    Houston Tx
    Owner/Builder @Hopkins Guitars
    I have a similar story. This is in the apartment I am currently living in. During the week I would usually be in bed by about 10 because I had to get up around 5 am for work, and the dude next to me had a subwoofer hooked up to his TV and would watch those dumb MTV shows that when ever there was a break in the "dialog" they play this annoying bass line that is just boom boom boom. Every night this would come right through my wall, and it was keeping me awake at night.

    So one night I drug my GK 700rbII and both of my 410 NEO cabs into my bed room and faced them into the wall facing their apartment, and cranked the hell out of it. The dude told me that a couple his surround sound speakers fell off the wall. He said he thought a tornado was coming.
  11. tbirdsp


    Sep 18, 2012
    Omaha, NE
    I still need to hook my VB-2 up to both my Genz Focus 115's at once and see what she'll do. Right now I have an annoying rattle that seems to be coming from the transformer that is on the right as you are looking at it from the back with the grill off. Worst when I play a C :eyebrow: I was gonna use the VB for a jazz-ish gig I had at a casino bar Sat night but I ended up using my old Hartke 3500 instead.

    Of course if I ever want power tube grind I can crank up the Little Bastard....:bassist:
  12. 1958Bassman


    Oct 20, 2007
    If you want grind, cranking the master volume isn't the way to do it. If you want distortion at lower levels, you have to lower the master and use the volume/gain control to get the sound. The master volume is what the name implies.
  13. LowEZ

    LowEZ Supporting Member

    Mar 29, 2011
    Central NJ
    OP specified power tube grind, and being that master volume controls occur prior to the output stage, you have crank the master to get there. You're talking about preamp grind.
  14. Mr. Foxen

    Mr. Foxen Commercial User

    Jul 24, 2009
    Bristol, UK
    Amp tinkerer at Ampstack
    You can't get power tube distortion without pushing the power tubes past their full clean power. It isn't from knob positions. This also means that a 100w attenuator is no good for a 100w amp, becuase at max attenuation, the amp is in its clean room, you need more than 250w (because new output transformers are expensive).
  15. JellinWellen


    Oct 18, 2012
    Yep, I had the same issue along a few other things in my amp. If its under warranty take it to an amp repair person YOU trust OR send it directly to peavey.
  16. tbirdsp


    Sep 18, 2012
    Omaha, NE
    Bought used :(

    Was hoping it was just something I could tighten up myself. Do you know what it ended up being?
  17. JellinWellen


    Oct 18, 2012
    Was it from a guitar center in the last 4 months or so? I had to return a previous one before I got the other one. I thought it was the pre tube shield rattling but I made double sure they were secure. Seems to be semi common issue.
  18. On a few select occasions I have had my Classic 400 "clean" channel into break up through my '66. Two words. Ear. Plugs.

    Peavey can build a tube amp.
  19. JellinWellen


    Oct 18, 2012
    Yeah they sure can, but on the vb-2 the clean channel was designed to never distort at higher volumes. It just keeps compressing the distortion
  20. spiritbass

    spiritbass Supporting Member

    Jun 9, 2004
    Ashland, MO
    Good episode! It was titled "Time Enough at Last".

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