Anybody have any idea why Winisd calculates the volume for this speaker at .40 cubic feet but the optimum size shown by the product details at Parts Express is .26? And what would you recommend for this driver?
BTW, I inherited 4 of the CAW's and 2 ET338's new in the box from a friend who passed away. Needing to build some enclosures and x-overs for them.
Probably some filling is considered in the calculation, as it allows for a (virtual) rise of the inside volume till + 20 %
(filling is also mandatory for little closed boxes as it absorbs the very near reflections behind woofer's membrane )
Yea, I didn't consider that. I'm pretty new to speaker building, did it for awhile when I was about 30 years younger and am having to re-learn and learn more. From what I've been reading I'd probably do better with the larger box, sound deadening material on the mdf such as Dynomat, then the filling. I've got a piece of 1 1/4 solid mahogany for the baffles.
Don't pay too much attention at WinIsd default calculation. It should not be taken as an optimum volume, simply it's the volume that gives a qtc of 0,71.
Feel free to choose the Qtc that you like most, trying to avoid values above 1.
Qtc between 0.8 and 1 are fine for small woofers, and save a lot of space.
Have personally built a monitor with these Morel, 6 liters closed.
Feel free to choose the Qtc that you like most, trying to avoid values above 1.
Qtc between 0.8 and 1 are fine for small woofers, and save a lot of space.
Have personally built a monitor with these Morel, 6 liters closed.
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Morel looks to be better suited to a vented box if you care
about woofer performance unless you want it in a small space
like car interior.
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Thanks for the reply's.
I'm using 2 per cabinet d'apolitto configuration with the
ET338 tweeters. I'm thinking about using the caw's in seperate sealed boxes inside of the larger woofer box with side mounted 12" Dayton Audio LS12-44 , interior volume appx. 1.5 cubic feet (taking in the volume of the midwoofer boxes). Overall outer dimensions of 10" x 34" baffle and rear (have a 1 1/4 inch thick mahogany to use as baffles) x 16" depth. I figure I can tune the woofer box with damping material and fill to reach the recommended 1.3 for the Dayton.
Any comments? Anybody think this would work out OK?
Thanks!
I'm using 2 per cabinet d'apolitto configuration with the
ET338 tweeters. I'm thinking about using the caw's in seperate sealed boxes inside of the larger woofer box with side mounted 12" Dayton Audio LS12-44 , interior volume appx. 1.5 cubic feet (taking in the volume of the midwoofer boxes). Overall outer dimensions of 10" x 34" baffle and rear (have a 1 1/4 inch thick mahogany to use as baffles) x 16" depth. I figure I can tune the woofer box with damping material and fill to reach the recommended 1.3 for the Dayton.
Any comments? Anybody think this would work out OK?
Thanks!
Simulate before building. LS12-44 would have approx. 82,5 dB/2,83V/1m
with both of the voice coils in series. Are you sure you need the Morel's
in mtm? They should be padded down to match the woofer.
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