The Tube Thread

Discussion in 'Gear & Equipment' started by DrakkarTyrannis, May 13, 2009.

  1. cow 7 sig

    cow 7 sig AU director / RHLC ©

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    i put a pair of 50s made tung-sol 5u4gbs in the tube rec and really like the sound,more so than the jj gz34s i normally use.
    also,V1 now has a mazda chrome silver plate 12ax7(early 60s) in there.its one of the rarest 12ax7s ever made.very crunchy,me like alot.
     
  2. Johnology

    Johnology SS.org Regular

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    Can anyone give me a wee bit of help? It didn't feel worth starting a thread when i don't think there is a lot involved.

    In short, i know a lot about gear, guitars and amps, i can take apart a guitar andput it ack together again blind folded. But nothing at all about repairing/maintaining an amp.

    I have a H&K switchblade. Playing through the speaker is a Marshall avt, (i wirsed it so that it would come out of the amp and straight onto the speaker). Obviously this is only so i can play it at home a wee bit rather than to act as a cab.

    I'm now getting no sound from the Head, except for what sounds like a small buzz coming from the valves that sounds just like what i'm playing, and not a thing out of the speaker. Could it simply be that the speaker has packed it in from too much power going through it or could there be an actual problem with the head?

    Just looking for an idea from people better educated than myself before i get the guns out and trek down to a practice space with real cabs.
     
  3. DrakkarTyrannis

    DrakkarTyrannis WWSD?

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    Just threw my new 12AT7 into V2 and I like a lot. It's aggressive, has a vicious "brightness" to it that's not shrill and it keeps the gain low, the amp quiet, and it oddly enough makes the amp tighter. I'm gonna wait until I burn in the tube completely, but at the current moment I don't even use my Bloody Murder..this tube seems to tighten everything up better than the pedal can. Honestly it DOES what I was using the BM to do.
     
  4. cow 7 sig

    cow 7 sig AU director / RHLC ©

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    v1 is still the mazda chrome.(very impressed)
    v2 is a telefunkin(50s NOS diamond stamp)
    V3 is a mullard(NOS 50s)
    v4 is zariex branded RFT(german NOS 60s)
    and v5 is still the LPS
    also,swapped the tungsol 5u4s for a pair of sylvania 5u4gb.
    amp has a whole new roar and crunch to it.
    gain stays at 12 noon.still plenty there lol.
    still with =C= EL34s
     
  5. StupidDav

    StupidDav SS.org Regular

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    Got an EH 12AT7 for my 6505 and tried a load of places.............

    V5 - too harsh and brittle, tightened up the lows a bit but not 'nuff balls
    V1 - lowered the gain considerably, but I found the tone too flubby and wooly after a while
    V2 - lowered the gain a little less than in V1, but the tone still gets flubby and wooly
    V3 - slight reduction in gain, made the amp a little clearer, not flubby like in V1/2. Thats where it stayed.

    At the moment my pre tubes are

    V1 - Sovtek 12AX7LPS
    V2 - JJ 12AX7
    V3 - Electro Harmonix 12AT7
    V4 - JJ 12AX7
    V5 - Sovtek 12AX7LPS

    Stock Rubys in the power
    Think I might get another pre tube or two in my search for clarity and punch. :shred:
     
  6. DrakkarTyrannis

    DrakkarTyrannis WWSD?

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    I bought another 12AT7 for the V4 PI slot to try it. After a while of use, the Sovtek won again. I've learned my lesson. Nothing but the Sovtek 12AX7LPS goes in V4...however I replaced the V1 tube I had with the new 12AT7..magic. It lowered the gain to where the entire scope can be used without going overboard and it just kills.
     
  7. Jo3yJJ123

    Jo3yJJ123 SS.org Regular

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    I want something that'll give me the tightest lowend I can get, with a lot of Mid kick, not too much highs though.
    Suggestion?
    Running on el34's and ecc83's
    Stock (the amps brand new)
     
  8. smucarolina

    smucarolina King of the Chatroom

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    just put kt88's in everything.

    drak says so. so it makes your amp sound better.












    tube snobs.
     
  9. Customisbetter

    Customisbetter WhiskeyTangoFoxtrot Contributor

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    Pre - GSP2101
    GT 12AT7, JJ 12AX7

    Power:

    =Carvin T100
    2xchinese 12ax7
    4x mesa el34s

    =Fryette 2/90/2
    2x EHX 12ax7
    2x 12au7
    4x Sovtek NOS KT88 :metal:
     
  10. Grindwalker

    Grindwalker SS.org Regular

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    Hey guys, my first post after reading a lot on here.

    In my Peavey Triple X i use:

    4 x JJ6l6GC in the Poweramp

    and in the Preamp:
    V1: Tung Sol 12AX7
    V2: TT12AX7 (Chinese made, from the german store TubeTown. I don´t know how this tube is called elsewhere)
    V3: Groove Tubes 12AX7R2
    PI: Sovtek LPS

    The previous owner had it running with all EH12AX7 in the preamp and also JJ6l6GC in the poweramp, but switched it to EL34 mode, don´t know why, Maybe to run them hotter? Didn´t break anything, but sounded kinda meh... very brittle and fuzzy in the high end (what lots of people dislike about the XXX) while being kinda flubby in the lowend.

    With the new tube setup it sounds a lot different, thight but big lowend, aggressive but not shrill highs and a good midrange punch. Also it has somewhat less gain, but hey, a XXX has way too much of that anyways.

    I was extremely astonished, how well this amp reacts to changes in the different tube slots, in my previous amp (Engl Fireball) tube changes were barely noticeable.
     
  11. DrakkarTyrannis

    DrakkarTyrannis WWSD?

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    Damn right..KTs are the way to go.
     
  12. GPDUSA

    GPDUSA SS.org Regular

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    Wanted to show this to everyone, forum member Cygnus X1 (I believe he posts here as well) over on mylespaul.com did a test when we sent him some PM Tubes (which we exclusively sell) to try. He's an amp builder and a tube fanatic. Very extensive test, very informative, he did a great job. Enjoy!

    The sound test will be the next post...
     
  13. GPDUSA

    GPDUSA SS.org Regular

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    Thanks again to Cygnus X1 for doing all these tests for us, he spent a lot of his time to do this and we really appreciate it. :wavey:
     
  14. TheWreck

    TheWreck Grind Your Mind!

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    What can I use instead of 6V6 power amp tubes? I'd like something to replace them to get rid of the Fat bottom end their giving me.

    Thanks
     
  15. petereanima

    petereanima Br00tal Bubbly Mofo

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    Is that for your homemade-amp out of the other thread? If so, no one will be able to tell withtout the EXACT schematic, and then a tech should measure it.
     
  16. TheWreck

    TheWreck Grind Your Mind!

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    Yes it's for my vintage amp out of the other thread...thanks for the reply i will look at that closely with the technician at my job!

    Cheers!
     
  17. s5470Pro

    s5470Pro Banned

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    VHT Pitbull G100Cl

    4-El34's for power, 3 12ax7 pre.

    Looking to maybe check out the JJ's
     
  18. Vostre Roy

    Vostre Roy Disciple of Djod

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    Just changed my lamps, here what I've put:

    Amp Model: Engl Thunder 50
    Preamp: Engl ECC83 FQ x4
    Power Amp: Tube Doctor 6L6GC x2

    Will try it a little more and edit this post later to give my impression. So far, nice deep sound, delivers a little more gain but the clean stay smooth and nice.
     
  19. Greatoliver

    Greatoliver Looking to windward

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    Just wondering if I could get some advice:

    I've got a 6505+ combo, and was looking at changing the tubes. I've currently got JJ 6L6 in the power section, which I like, but I have a TS 12AX7 in V1, and JJ Ax7 in the rest.

    I've been a bit disatisfied with the tone of the JJs in the preamp, they are quite thin and dry sounding. I swapped some around with the stock Ruby tubes, and prefered the tone, but the Ruby tubes gave too much low end, and weren't really tight enough.

    So I was looking at putting a Sovtek 12Ax7LPS in the PI, and putting in 2 GT 12AX7-C in the preamp section (on a budget :( ). The GTs are supposedly relabeled Shunguang tubes, and are meant to compliment the amp well. However, I wanted some more opinions, so does anyone have any comments on this selection?
     
  20. Zeff

    Zeff SS.org Regular

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    fja modded 6505 - full jj tubes high gain set (euro tubes)

    Sounds great, very dark punchy and grindy
     

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