From: "Rich Peet" <>
>>> What you are describing is a crude Jecklin disk setup. Hunt up info on
>>> that. You'll find there are a bunch of variations.
>>>
>>> To take care of handling noise you need some form of suspension between
>>> you and the mic. A solid path carries the sound.
>>>
>>> Walt
>>>
>
>
> I don't think he is. Sounds more like a conventional pzm barrier.
PZM would have the mic diaphragms facing the barrier, not facing
forward. And the gap size would determine the frequency response.
> Nothing is more crude than a Jecklin disk and any modification will
> likely be an improvement over the commercial design. I am still
> waiting to hear from anyone that says they like the sound of that
> setup for soundfields more than a couple feet away compared to
> anything else. I like barriers but imho the Jecklin is poorly spendt
> time to build on your own and a big mistake to buy.
The Jecklin disk is a very elegant design, hardly crude.
I used the word crude only in that the mic setup described did not
follow Juerg Jecklin's original design. It's well worth reading his
paper, which is available online:
http://www.josephson.com/tn5.html
The disk shown on that page is not Jecklin's original design which used
a 3/8" plywood core with a foam and sheepskin dampening layer.
It's a simple design, it is silly to pay the prices being asked for the
commercial design. It is one of the easier designs to build, and if you
follow all the design considerations Jecklin detailed it does work well.
The problem is exactly that, folks make something that's a barrier,
space mics somewhere apart and call it a Jecklin disk. That is a recipe
for quite variable reports about it's quality. There is a considerable
literature of folks who do use and like the sound of a properly built
and set up Jecklin disk.
I prefer the SASS over the Jecklin disk, but the modified SASS is much
more complex to make. Though it is less setup sensitive.
Walt
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