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In Reply to: RE: tannoy cabinets question posted by blinx7 on February 16, 2015 at 10:43:44
Small Reality dose :-)
Enclosures only affect frequencies below 200hz.
Tuning / appropriate enclosure sizes affect low frequencies.
The better tailored the design, the deeper one can obtain palpable results. Even roughly approximate 'boxes' will do surprisingly well... likely hitting FS (at ~46 hz).
Tannoy MG 12's go pretty darn deep.. even when in a suitably sized cardboard box.
Yes I've tried it.. on a whim.
That said: Those Do deserve a bespoke box.
Just how crappy Are those salvaged boxes.. where one varies from the other ??
Buy / build appropriate boxes.. or if it's problematic, sell the drivers on :-) paraphrasing Ettore Bugatti: when a customer complained that his car wouldn't start after spending the night outdoors.
Follow Ups:
Agree with everything said.But that doesn't get me off the starting line. Yes, someday maybe Cornetta boxes from a cabinet maker. Between here and there, I'll start with these. Maybe I talked them down too much. They look like orig-tannoy Belvedere cabs, but- they're not. Like as not they're from some standard american furniture makers in late 5os early 6os. Nice walnut veneers, tight joints, no potted-plant rings on the tops. Workable.
What I need to be knowing is whether that 4" port dimension is better or worse than the 5" port dimension. So I can match the other one to it, and at least start myself out with a level playing field...
*edit: make that tannoy Belvedere Senior ; v.similar to the 32x24x16 external size of these generics.
Edits: 02/16/15
If you have the Thiele-Small parameters for the drivers, and the cabinet measured volumes, then you or most of the people here can run some free software and answer the question. If you don't have those data, no calculated answer is possible - leaving you to listen and decide subjectively for yourself.
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