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In the Forum: Horn-Loaded Speakers
In the Thread: Macondo’s Midbass Project – the grown up time.

Post Subject: Decoupling: It takes ballsPosted by jessie.dazzle on: 9/14/2010

Go buy a load of tennis or racket balls and use them to float the horns. You can vary the number until you get just the right squish.

As it is just the edge of the mouth that rests on the attic floor, this will require a some prep work...

Here's how I'd do it:

Add permanent legs similar to what's shown in the most recent photo.

For each leg, cut a 1ft square board from thick (2 x 3/4 inch) plywood and add a shallow boarder around its perimeter, making a sort of very shallow box. Place "boxes" open-side-down under legs and over a bunch of balls, so that the boarder keeps the balls from rolling.

Voilà, a floating horn.

I once used racket balls under massive concrete slabs with excellent results as confirmed by playing music loud while placing front teeth in contact with suspended element.

Over the course of a month, the balls did take a set before finally stabilizing... I had this setup in use for about a year and only took it apart due to a pending move... I still have the balls, and they still have air.

jd*

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