Originally Posted by
cooky
Digging around there are a few of these or similar designs. Briggs did some in th'olden days.
Dual chamber vented aperiodic. Fostex do a ported one for the FE83E, they call it a double bass reflex where the upper chamber is ported into the larger 2/3 section....
There seems to be a 1/3;2/3 ratio where the upper chamber behaves more like leaky sealed and everything below Fb is 'vented' into the lower ported chamber which is tuned to the full enclosure volume.
This is a great find. Thanks so much. I wonder why this kind of design has been more or less abandoned in today's world ?
Denzil
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