Show me your dummy load

Discussion in 'Amps/Cabs Tech Corner: Amplifier, Cab & Speakers' started by Nolatone Ampworks, Jan 22, 2008.


  1. Nolatone Ampworks

    Nolatone Ampworks Member

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    Hey folks,

    If it's not too much trouble, could some of you snap a digi photo of your dummy load and post them? I'm looking to build one, but I've never actually seen one.

    Also, I've read somewhere about plans for a dummy load to build, but I've not seen those either.

    Thanks,

    Paul
     
  2. Wakarusa

    Wakarusa Member

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    On the road at the moment (I thought Dallas was supposed to be a warm place...), but if you'll PM/email me I'm happy to send along pix or plans.
    That or you could just stop by the shop when I'm around and we can throw one together. Not too tough a job.
     
  3. evacuated

    evacuated Member

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    Simple but effective.
    8ohm-250watt. Get two and you'll have 4-8-16 loads.


    [​IMG]
     
  4. evacuated

    evacuated Member

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    I like that one, with the jacks on the front. No alligator clips to slip off..;)
     
  5. Wakarusa

    Wakarusa Member

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    Finally back in ATL...

    [​IMG]

    Hunk of thick aluminum, 4x50W 16ohm plus a 50W 2 ohm so you can select 2, 4, 8, and 16 ohms (with between 50W and 200W power handling).

    The other junk lets you connect a multimeter, o'scope, or generic 1/4" phone and set the level of the output signal. The fan below it keeps it cool.
     
  6. Wakarusa

    Wakarusa Member

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    And, for the hat trick, a picture of the back and a schematic/layout kinda thingy that I whipped up in Visio when I built the thing. You could replace the paralleled 16 ohm resistors for single 8 ohm parts. I used the 16s for the extra power handling while keeping the cost reasonable. The part number for the rotary switch is lost to the winds, but it's a 3P4T from Mouser.

    [​IMG]

    [​IMG]
     
  7. Steve Dallas

    Steve Dallas Supporting Member

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    LOL! I use the exact same thing. I got mine at a surplus shop for $4.
     
  8. Nolatone Ampworks

    Nolatone Ampworks Member

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    Hey Todd, THANKS!

    Paul

     

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