Can I Use a Hot Plate for a combo amp?

Discussion in 'Effects, Pedals, Strings & Things' started by guitargypsy, Oct 13, 2008.

  1. guitargypsy

    guitargypsy Member

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    I have a fairly new Fender blues deluxe that is still a little loud for some gigs. How could I use an attenuator when I don't have a separate head and cabinet set up?
     
  2. cvansickle

    cvansickle Supporting Member

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    As long as you can disconnect the internal speaker, just get another speaker cable when you buy your HotPlate and you're good to go. Be sure to get the correct impedance model.

    If the internal speaker is hard wired, you can have the amp's speaker cable modded to accommodate your needs.
     
  3. guitargypsy

    guitargypsy Member

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    I can disconnect the internal speaker. The amp has a 'power amp in' and a 'preamp out' jack. Can you tell me what the signal path would be using a hot plate?
     
  4. leofenderbender

    leofenderbender Member

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    A Hotplate has one quarter inch jack for the amp, and multiple quarter inch speaker outs. Plug the amp into the amp in, and plug the speaker into the speaker out of your choice.

    Disconnect the speaker. Plug it into the speaker out of the Hotplate.

    Get a new speaker wire. Plug one end into the jack where the speaker was plugged into the amp; plug the other end into the Hotplate amp in.
     
  5. cvansickle

    cvansickle Supporting Member

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    The HotPlate sits between the amp's speaker output jack and the speaker.
     
  6. K-man

    K-man Member

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    Typically the speaker cable in the combo isn't long enough to plug into the attenuator if you have it sitting on top of the amp. You'll probably need to put a longer speaker cable in the combo.
     
  7. guitargypsy

    guitargypsy Member

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    OK so it would be:

    instr input jack of amp-->'preamp out'-->hot plate-->speaker of amp

    if I understand correctly.
     
  8. cvansickle

    cvansickle Supporting Member

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    No. Take the cable from the Speaker Output of the amp, plug that into the HotPlate's Input. Then plug the combo's speaker into the HotPlate's Speaker Output.

    The "preamp out" is like an effects loop.

    Go to this link to read the manual:

    http://www.thdelectronics.com/pdf/HP Manual 060405.pdf
     
  9. GCDEF

    GCDEF Supporting Member

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    NO. Forget the preamp stuff. It's not involved.

    It goes between the power amp and the speaker.
     
  10. guitargypsy

    guitargypsy Member

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    got it, thanks!
     
  11. dylumph

    dylumph Member

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    And that Blues Deluxe should be 8 ohms. Aren't all Fender combos 8?
     
  12. cbpickin

    cbpickin Tweed Supporting Member Silver Supporting Member

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    Also, you don't need to install another longer speaker cable in your combo, you can just get a female/female 1/4" jack (they make a robust metal one at Radio Shack) and connect the speaker cable connect to your speaker to another speaker cable using the adapter.
     
  13. FAC

    FAC Member

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    True...I have an adaptor that I use at home...but be careful at a gig...tape the adaptor with gaffers tape so it does not accidentally slip out if someone bumps it...for example, if you move your amp around during a set change, it would be really easy for the plug to come loose. As mentioned many times on this forum, tube amps need to be connected to a load, and if it becomes disconnected you could fry the amp.

    edit: and stay away from the plastic adaptor...it is not meant for speaker level signal!
     
    Last edited: Oct 13, 2008
  14. cbpickin

    cbpickin Tweed Supporting Member Silver Supporting Member

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    I actually have a Clark attenuator on order with him so I can mount it permanently inside my cabinet and not have to use the HotPlate anymore. I hate disconnecting and reconnecting the internal speaker constantly. Once the Clark arrives, I'll just have to reach back and click which level I need, can't wait.
     

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