The late Martin C. Poppe (20 Feb 1941 - 31 Oct 2016)
who wrote the K-Coupler paper, sketched this idea back in the late 1960's. I think it would need a peppy driver with rising on-axis response but also characteristics where venting would do some good. As envisioned, ts pretty large and don't know if the original intent was for a portable but that size would fit.
who wrote the K-Coupler paper, sketched this idea back in the late 1960's. I think it would need a peppy driver with rising on-axis response but also characteristics where venting would do some good. As envisioned, ts pretty large and don't know if the original intent was for a portable but that size would fit.
Freddi I feel bad when you start a thread and no one responds. Have you ever read the questions and answers while shopping on Amazon? A question will be asked about a product and someone will give the helpful reply "don't know". I think most of us here are smarter than that but don't know the answer so you get no replies. Is this something you're thinking of building? I'd think there's a number of 6 to 8" drivers that could be tried. Any you've got on hand?
the 8s (AN8 / 1772) I have may be loo large plus not sure if the outcome would be favorable - it might be serviceable ?. I do have some cheap and cheerful Sammisound 8 whizzer type with fairly strong motors which might work with a tweeter - -the affair would be pretty heavy. A Karlsonator boombox would be easier to figure out - but Poppe's idea looks cool and might provide some sense of stereo separation. Well braced 9mm plywood could work.
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