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Orion Man
05-20-2007, 06:38 PM
Hey guys, building a box for my Polk/MOMO 10's. I have gotten the desing down, but not sure how to determine what the tuning frequency of the enclosure will be?

Any ideas?

26.75" W x 12" H x 11.25" D= 1.5cu-ft

Polk reccommend .66 for SQ, but after doing some research I figured to get a little more on the SPL side I'd go with a bigger enclosure.

.66 per side is tuned to 35Hz according to Polk.

Any clue asto what my design would be tuned to?

profundus-sanus
05-20-2007, 06:43 PM
sealed enclosures don't really have a tuning frequency....

they have an f3 and a peak frequency. but not a tuned frequency.

Orion Man
05-20-2007, 06:44 PM
Not sure what an f3 is? Is the peak frequency the lowest possible output?

profundus-sanus
05-20-2007, 06:49 PM
peak frequency is what frequency the box would be loudest at.

f3 is the point where the box has a -3 db output

Orion Man
05-20-2007, 06:51 PM
ic. Thanks for the input. I was told that the bigger enclosure wouldn't be as power efficient. I've got well-over the RMS going into each sub, do you think it will be that big of a deal?

ngsm13
05-20-2007, 06:54 PM
In general, and to a certain extent... a larger enclosure will need less power.

If you have a pair of 10's, I'd recommend 1.2-1.5cubes NET internal volume.

nG