Holden 200 valve amp

Discussion in 'Amps and Cabs [BG]' started by will o the wasp, Jun 18, 2019.

  1. will o the wasp

    will o the wasp

    Jun 18, 2019
    Would it be safe to put KT120s (replacing the KT88s) in a Holden 200 amp?
  2. Giffro


    Apr 29, 2017
    South Australia
    I know that is an old Aussie or Kiwi amp and there are some good experts around TB here who will answer your query. A specialist amp designer and builder called @agedhorse may be able to help you here.
    If you have no luck try the OzBassForum. Click the link below. They may know more about this amp.
    - Index page
    Pulverizor likes this.
  3. foal30


    Dec 3, 2007
    New Zealand
    I bumped up the Holden Club thread. I couldn't remember how to link threads sorry.
  4. the first question is, why?
    BassmanPaul likes this.
  5. Mr. Foxen

    Mr. Foxen Commercial User

    Jul 24, 2009
    Bristol, UK
    Amp tinkerer at Ampstack
    Wrong valves is less safe than right valves.
    BassmanPaul likes this.
  6. Giffro


    Apr 29, 2017
    South Australia
    Last edited: Jun 18, 2019
    foal30 likes this.
  7. BassmanPaul

    BassmanPaul Inactive

    I too would like to know why the OP would want to do this. What is he hoping to gain over what the KT88’s deliver?

    BTW @will o the wasp welcome to TalkBass. :)
  8. will o the wasp

    will o the wasp

    Jun 18, 2019
    Apparently the KT120 has a warmer bass sound and more headroom.It sounded a good idea for my 5 string.But decided against it after talking to a few technically minded guys.I might try,experiment. with the tone controls.
  9. BassmanPaul

    BassmanPaul Inactive

    It also has a higher heater current draw stressing the power transformer.
    agedhorse likes this.
  10. BogeyBass

    BogeyBass Inactive

    Sep 14, 2010
    The bottles are bigger and taller.
    Don't know if spacing allows it.

    But if they did. Need bias.
    I don't see point but they are massive bottles.

    Could do more. But would perform very much the same in the amp. Same transformers same current same voltage