Are 7189 compatable to replace EL84 tubes?

Discussion in 'Amps and Cabs' started by consoleb, Feb 3, 2008.

  1. consoleb

    consoleb Member

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    I have some old Amperex 7189 tubes and somewhere I read they are compatable to use where a EL84 is used is that true?
     
  2. consoleb

    consoleb Member

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    What about for use in a guitar amp. I just bought a GIbson Goldtone GA30rvs and am waiting it's arrival. and I may want to trade but I want to learn more first.
    Thanks
     
  3. slider313

    slider313 Silver Supporting Member

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    I'm using a set of RCA 7189's in my Goodsell Super 17 with great results.
     
  4. Lil'Strat

    Lil'Strat Member

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    Real 7189s are the Holy Grail... do not part with them under any circumstances.
     
  5. consoleb

    consoleb Member

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    Lil,Strat thank you for your advice.
     
  6. AdmiralB

    AdmiralB Silver Supporting Member

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    Any 6BQ5 from ~1980 up through the end of US production *is* a 7189. They simply made one tube to the higher specs and put both designations on it.
     
  7. zoooombiex

    zoooombiex Member

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    I put a set of Bugle Boy 7189s in a Two-Rock Ruby and forgot to put back the original tubes when I sold it (or at least to charge a little something extra). Doh!
     
  8. Lil'Strat

    Lil'Strat Member

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    If consoleb's 7189s are old Amperex, it is likely that they were made in Western Europe, probably Holland. They last a long time, holding their spec better than any current eastern republic '84s. It is possible to coax >20w from a pair with a plate supply @440-450v. A well-matched quad can be geeked up to 50w with a combined cathode resistance of 50 ohms and a cooling fan... but that would compromise the longevity a bit.
     
  9. consoleb

    consoleb Member

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    I haven't bought tubes in about seven years (sold my amp) WOW have prices jumped for NOS tubes. You guys are great! keep up the good postings.
    Thanks
     

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