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Old 10th November 2020, 08:35 PM   #41
simplesteve is offline simplesteve  United Kingdom
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Alpair 12PW Recommended Enclosures
I'm building a pair of simple 2 ways, with a front port, and maop-7's and 12 pw's Dave. Cabinets lined - top section top and sides, lower section lined top and down about 10cm (4") below the driver with stuffing very loosely below.
Alpair 7P & Alpair 12PW combination.

Last edited by simplesteve; 10th November 2020 at 08:37 PM.
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Old 10th November 2020, 08:47 PM   #42
planet10 is offline planet10  Canada
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Alpair 12PW Recommended Enclosures
This one? http://wodendesign.com/downloads/sim...y-A7pA12pw.pdf

In a BR you line the walls (or at least 3) so as to try to reduce higher frequency reflections. Too much damping screws up the helmholz function of the vent.

dave
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Old 10th November 2020, 08:55 PM   #43
simplesteve is offline simplesteve  United Kingdom
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Alpair 12PW Recommended Enclosures
Yup, that one. I followed guidance from Stefan at KJFaudio for the lining and stuffing. Not sure what the helmholz function is but the vent has been useful when trying to pick up the boxes...!
I want to compare them to my rather expensive (bought) speakers at some stage soon..
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Old 10th November 2020, 08:57 PM   #44
planet10 is offline planet10  Canada
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Alpair 12PW Recommended Enclosures
Quote:
helmholz function is but the vent
ie bass reflex

Holes and other features on a box that help with lifting are very useful.

dave
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Old 11th November 2020, 01:38 AM   #45
MITsound is offline MITsound  Canada
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Quote:
Originally Posted by planet10 View Post
I have not measured these 2 drivers. The few A12p i had were long gone by the time i got any A12pw.

Personally i do prefer the A12pw as a FR over the A12p. It gets far to little love.

dave
In a 7.5ft3 Onken style cabinet, I loved my two way combo of each with a 12P, and a Trace Elliot by Celestion 15Ē woofer ( I donít recall the driver #). With a simple 47uF cap on the 12P, and a 12mH inductor on the Trace Elliot, it was great with solid state A or AB, and especially so with a 7 watt SET 300B integrated.
I may do it again. Not super deep, but more than enough, and freaking POWERFUL sounding. The woofer is 98db/ watt.
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Old 11th November 2020, 02:24 AM   #46
planet10 is offline planet10  Canada
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:^)

Powerful is what i would say just from the description.

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