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Any thoughts on this idea? I've searched the archives and not seen it.
Re: Theater 4 or 3 Pi in Onken enclosure?
Some π designs use a rectangular port, but none have ever used a long slot or series of ports along both sides. It is an attractive design though, and I see no reason why it wouldn't work just fine.
Tightwad, I can't see the image in your post - is it similar to the above? I've used deep slots for tuning with some success when for whatever reason a tube wouldn't fit. I think they're more resistive than tube ports though and care is needed when the height/width ratio gets large. John
Yes, exact same thing. Here's a link to the page from which the picture comes. It's the original Jensen Ultraflex design. I've found an Onken calculator (Excel spreadsheet) online which yields volume and vent numbers from T-S params. http://www.studiomaudio.com/onken.html
This is a very nice look and has possibilities - can you give me the link to the calculator?
Here is a direct link to the Excel file, from James Melhuish's web site. I believe an Onken bass box is still the standard accompaniment to the Oris horns, so if you are interested check out Oris's web page. I have tried hunting around for Onken's article on the design, with little luck. http://melhuish.org/audio/download/ONKEN_CALC.xls