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500B (needs love and 7591s)

Discussion in 'Fisher' started by dfunghi, Apr 23, 2018.

  1. Rockyhill

    Rockyhill No marigolds in the promised land Subscriber

    I would connect both speakers. It’s my understanding that tube amps should have a load on all channels.
    RUmad likes this.


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  2. larryderouin

    larryderouin Turn it UP, POP? PLLUUEEEZZZZZEE Subscriber

    Glen Burnie Md.
    NO LOAD on a tube amp is a Death Knell for Output Transformers. If you don't have a 2nd speaker, put a dummy load (8ohm 50W resistor) across the spkr leads.
    AlTinkster92 likes this.
  3. dfunghi

    dfunghi AK Subscriber Subscriber

    Central Coast California
    I added a second speaker within a minute or two I just wanted to see if I got any sound at all when powered up prior to moving forward.

    But thank you both for that info, I was unaware of that cautionary tale.
    Last edited: May 6, 2018
    Rockyhill likes this.

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