Ultimate Cracklebox

I have built a few of these in the past, and after reading of the death of Michael Waisvisz last week, I decided to use my last 709 to build this:

Due to the woofer in a ported enclosure with a tweeter, this thing is way more efficient(louder) than most crackleboxes with a small speaker. There is a significant amount more bass as well.

I installed a line out, for stadium use.

It runs on two 9 volt batteries(in parallel, so they last longer).

The contact points are pennies.

10 thoughts on “Ultimate Cracklebox”

  1. that’s the one thing a cracklebox needs, a big loud amp. Too many people build them with the same crappy little speaker as the original. As if they were afraid it wouldn’t work.

  2. The extra bass that this emits makes it way more fun to play than a normal cracklebox.

    Since efficiency is the key, maybe the cracklebox people should get together with the Lowther/Klipsch/Voight Pipe/Carfrae/etc folks.

  3. the reason people don’t use crackleboxes with big amps/mains power is that you are physically touching the circuit, and in the (unlikely) event of a ground fault or short or something you’d probably be killed or at least be savagely electrocuted…

  4. Is that any less safe than playing guitar? With an old amp with a 2 prong cord, you can end up with the hot wire on the strings if the plug is in the wall wrong.

    Anyway, the only one of these I built with a line out used an isolation transformer in parallel with the speaker. I guess that doesn’t make it any safer from ac shock, but the impedance of the primary seemed high enough that it didn’t affect what came out of the speaker.

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