Cure Tube Rattle w/ a Big Fat O-ring ???

Discussion in 'Amps/Cabs Tech Corner: Amplifier, Cab & Speakers' started by Tonefish, Oct 7, 2006.

  1. Tonefish

    Tonefish Member

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    I'm having a tube rattle situation and my tubes are new, so I assume/hope its not a bad tube.

    I'm wondering if some of the simple fixes I've seen actually work. Many have the Halo idea, but the simplest and cheapest seem to be the big fat high-temperature o-rings.

    Does anyone know if and how well this or other options work?

    Thank You for spreading the knowledge !!!
     
  2. Doug59

    Doug59 Supporting Member

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    Tonefish,

    I just purchased a set of 8 for my Fender DRRI on EBAY. They cost me $10 plus shipping. They really worked for me. I had a few notes that would cause a rattle/buzz that I isolated to the power tubes. I put a couple of rings on each tube, cranked it up and the rattle is gone.

    Doug
     
  3. rockon1

    rockon1 Member

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    Works well for microphonic pre amp tubes too. Have a Mullard long plate thats unuseable in the V-1 of most my amps. With a couple of o-rings its still microphonic ,of coarse, but just enough under control to be used.:)
     
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  4. SarasotaSlim

    SarasotaSlim Member

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    Tell me more about these O rings.
    Can you get them at plumbing store or Home Depot without having to pay the high dollar for eBay "guitar amp" O rings? Are they an automotive product?
     
  5. rockon1

    rockon1 Member

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    Well I use ones I have at work. They cost me nothing. I rebuild automatic trannys. Got them in all shapes and sizes. Mostly viton not high temp silicone. Still they are able to withstand hundreds of degrees. We will see. Ive only started using them recently. Besides worst comes to worst they will dry out and I put new ones on!:)
     
  6. Doug59

    Doug59 Supporting Member

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  7. Mike9

    Mike9 Supporting Member

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    I use them and they work great - I can't say enough good stuff about them.
     
  8. DOD250

    DOD250 Member

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    I know I'm kind of late in the game here, but I'm suffering the same issues with my Fender Pro Junior and Peavey Delta Blues. I'm just wondering exactly how you use the o-rings.

    Do you simply slip a couple over the problem tubes?
    How do you figure sizing?
    How many per tube?
    Can I get the right hi-temp o-rings at my local auto parts store?

    Thanks.
     
  9. Mike R.

    Mike R. Member

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    I used high temp silicone o-rings on the tubes in my Ghia combo.

    I slipped two on each tube. One at the base and one at the tip.

    Sizing? I measured the diameter of the tube and bought the size that was closest.

    Works perfectly!!
     
  10. DOD250

    DOD250 Member

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    Much thanks! I'll give this a try.
     
  11. reeced

    reeced Member

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    I don't know how hot preamp tubes get in a guitar amp but in my Leak Stereo 20 (2 x 10 watt valve) I cured microphony in the ECC83s by enclosing them in a cardboard tube lined with cotton wool.
     
  12. andybaylor

    andybaylor Supporting Member

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    WOW!!
    And this is why I love this place.
     
  13. Tonefish

    Tonefish Member

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    Do you happen to remember the sizes (like 315 for the 12AX7)?

    Also, where did you get them?

    I looked at McMaster Carr, but they only sell in packs of 25....which can get expensive if you're not sure of the size.
     
  14. SoCalSteve

    SoCalSteve Member

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  15. Tonefish

    Tonefish Member

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  16. Brendan

    Brendan Member

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    Measure the diameter of your tube. My EL84 is 13/16". As that ebay auction states, use the fattest one possible which is 1 3/16" OD according to the McMaster catalog. So, I can order 25 quantity of 13/16" ID, 1 3/16" OD diameter silicone o-rings for $9.70 plus shipping......or buy four for $9.99 on ebay.
    Consider the extras your lifetime supply or just ebay them like he's doing. you can be pretty sure they are coming from McMaster too.
     
  17. drod2045

    drod2045 Member

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    old thread - i need a set of o rings but cant find them online anywhere. Anyone know where to get them?

    I need them for 12ax7 preamp tubes (mainly just the v1) but thing it may be smart to o-ring everything

    also, do you put more than 1? is 2-3 too many?

    thanks

    edit: the ebay links in this thread do not work
     
    Last edited: Jan 5, 2009
  18. Jahn

    Jahn Listens to Johnny Marr, plays like John Denver Supporting Member

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    If you want to go hardcore, get these-

    http://herbiesaudiolab.home.att.net/

    Have a set in my audiophile tube preamp and microphonics were totally killed without killing the quality of the signal. Haven't tried em with my guitar amps yet, as nothing is rattling about enough to bother me yet (knock on wood). you just need one ring per tube.
     
  19. drod2045

    drod2045 Member

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    thats a little hardcore. but i do appreciate the advice - and the name of that product (the c ring! ha)
     
  20. rockon1

    rockon1 Member

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    Most plain old faucet orings you get at home depot will do fine in those faucet kits. I get tranny orings from work. Use as many as you like. Bob
     

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