1. Win a Broadcaster or one of 3 Teles! The annual Supporting Member Giveaway is on. To enter Click Here. To see all the prizes and full details Click Here. To view the thread about the giveaway Click Here.

Toshiba 6V6 tubes

Discussion in 'Amp Central Station' started by Craig Williams, Oct 29, 2020.

  1. Craig Williams

    Craig Williams Tele-Meister

    Age:
    57
    Posts:
    179
    Joined:
    May 16, 2016
    Location:
    Thailand
    Hi, living in Thailand and tubes not easy to find. Seen a guy here (I think hifi guy) selling Nos Toshiba valves. Would these work ok in my Fender Super champ Xd? I didnt know there were Japanese manufacturers
     
  2. telemnemonics

    telemnemonics Telefied Ad Free Member

    Age:
    61
    Posts:
    23,281
    Joined:
    Mar 2, 2010
    Location:
    Maine
    They should work fine if confirmed to be good, not dead.

    I forget what brand name but there was a factory set up in Japan with Mullards tooling that often sold under the GE brand.
    Their el34 looks like a Mullard but has a seam across the end of the bottle.
    Better than many new production tubes for long life but not considered great or bad.
     
    tubelectron likes this.
  3. theprofessor

    theprofessor Poster Extraordinaire

    Posts:
    5,402
    Joined:
    Aug 8, 2016
    Location:
    Chattanooga, TN
    Do you mean Matsushita?
     
    Archtop Bill likes this.
  4. telemnemonics

    telemnemonics Telefied Ad Free Member

    Age:
    61
    Posts:
    23,281
    Joined:
    Mar 2, 2010
    Location:
    Maine
    Right matsushita but I’m not familiar enough to be certain of what all branding might have been on Japanese tubes back then.
     
  5. TheDams

    TheDams Tele-Holic

    Posts:
    565
    Joined:
    Jul 29, 2016
    Location:
    Minneapolis
    Shhhhh... don’t tell the secret !

    I’ve been using Matsushita made tubes for years (branded RCA). They are indeed great !
     
    telemnemonics likes this.
  6. Peegoo

    Peegoo Poster Extraordinaire

    Posts:
    5,483
    Joined:
    Oct 11, 2019
    Location:
    Yonder
    That factory made tubes for several brands. Good stuff.
     
    Abu Twangy likes this.
  7. Craig Williams

    Craig Williams Tele-Meister

    Age:
    57
    Posts:
    179
    Joined:
    May 16, 2016
    Location:
    Thailand
    What about Tube amp doctor (TAD) valves? They seem to be about the most plentiful and reasonably priced here
     
  8. Craig Williams

    Craig Williams Tele-Meister

    Age:
    57
    Posts:
    179
    Joined:
    May 16, 2016
    Location:
    Thailand
    Oh, I saw someone selling NOS RCA valves too, but they are metal casing tubes
     
  9. archetype

    archetype Fiend of Leo's

    Posts:
    4,901
    Joined:
    Jun 4, 2005
    Location:
    Williamsville NY
    The Toshiba 6V6 (I assume 6V6-GT) will work fine in your SCXD. Be sure to set the bias voltage. At the test point, the factory spec is 42mV. The Toshibas should be able to take more than that. If it were my amp, I'd play through the amp at 42 mV and then at 45 mV and see if I liked one setting more than the other. YMMV.

    NOS RCA 6V6 metal envelope tubes should take the SCXD 375 VDC plate voltage ok. The only downside is that you can't see if they're redplating with that voltage on them. Have the chassis open and meter at the ready to set the bias when you turn on the power. The metal envelope is tied to pin 1 of the base and the SCXD circuit doesn't use pin one for anything, but while you have the chassis open be sure that no one has tied anything to pin 1 for a previous modification. You don't want to find the metal envelope connected to high voltage. If you bought the amp new, then it should be fine. The RCAs should sound good in that amp. Don't pay more that $15.00 US for them. Even the RCAs are not in demand.

    I've never used TAD, but they seem to be one of the better choices among new production tubes. They will offer no advantage over the Toshiba, IMO, and I'd expect the Toshibas to last a lot longer.

    If you don't know how to set the bias voltage and OBSERVE SAFETY PRACTICES SO YOU DON'T ELECTROCUTE YOURSELF, then take it to an amp tech, please.
     
    Frankie likes this.
  10. Buckaroo

    Buckaroo Tele-Meister

    Posts:
    282
    Joined:
    Mar 22, 2012
    Location:
    usa
    a variety of japanese tubes were made in the late 1960's and 1970's that are excellent sounding tubes in guitar amps. In some ways they are rich vein of the last supply of NOS around. Very good value on todays market.
     
  11. Craig Williams

    Craig Williams Tele-Meister

    Age:
    57
    Posts:
    179
    Joined:
    May 16, 2016
    Location:
    Thailand
    I ended up getting some TAD 6V6 STR's. Delighted with them.
     
  12. Squawker

    Squawker Tele-Meister

    Posts:
    449
    Joined:
    Nov 1, 2017
    Location:
    Lommedalen, Norway
    Matsushita is what is known outside of Japan as Panasonic :)
     
    Southpole likes this.
  13. tubelectron

    tubelectron Tele-Afflicted

    Posts:
    1,562
    Joined:
    Nov 25, 2010
    Location:
    France
    Long ago, I had some NOS 6BE6 tubes labelled... IBM International Business Machines ! :lol: I think I still have some of them somewhere... o_O

    Sure, Japanese tubes are OK ! I have some 6240G and 7247 (12DW7) labelled LUXMAN, IRCC.

    -tbln.
     
IMPORTANT: Treat everyone here with respect, no matter how difficult!
No sex, drug, political, religion or hate discussion permitted here.