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Mid '90s Yamaha TRB (Japan) question

Discussion in 'Basses [BG]' started by jcburn, Apr 9, 2010.

  1. I have just bought one of these and from memory it had internal trim pots to affect the tone. To narrow this down a bit its the model that had the 3 position mid selector knob.
    Can anyone tell me what the internal pots do and exactly what the mid knob does?
    Thanks, Jake.
  2. Dr. Cheese

    Dr. Cheese Gold Supporting Member

    Mar 3, 2004
    Metro St. Louis
    Congrats on getting a great bass! Yours looks like new old stock too! There are two trim pots: one sets the level of mid boost or cut, the other sets the overall level of the preamp output. They are very easy to adjust once you open the back.
  3. Cheers mate - yeah the guy I'm buying from bought it 6 or 7 years ago with intention of learning to play but ended up shifting to guitar!

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