| mateo88 |
I was wondering if the 6.5" Dayton DC160 would be suitable as a subwoofer. It looks pretty nice in a .5 ft^3 box tuned to 30 hz, and with cabin gain (this sub would be for a car) it seems like it would do well. Anyone care to give me some input?
Thanks:)
Matt |
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| mateo88 |
Sorry, I forgot to include the T/S parameters:
Qts: .33
Vas 27.8 l
Fs: 33 Hz
Qms: 2.75
Qes: .37
Xmax: 3mm
SPL: 88db 1w/m
Re: 6 ohms
Le: 1.4
power: 50w/75w |
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| HWV |
Hi Matt-
I ran the numbers through a spreadsheet simulator (excelsub.xls). I used the specs for the 4ohm version (DC160S-4). The T/S params were slightly different than posted.
The main limiting factor is the small xmax. In a 15l ported box (~.5 cu ft, tuned to 42.6hz), the input power before reaching xmax is only 13 watts. In a tiny sealed box (3.8l, ~.14cu ft), power handling is slightly better, at 20 watts.
In car SPL (with cabin gain) was 105 db @ 47.8hz with 13 watts for the ported box; with a rapid decrease in spl below that.
For the sealed box, max spl was ~101 db @ 110hz; dropping smoothly to 95 db @ 20hz. (20 watts input)
The sealed box is self-limiting the drivers' excursion. The ported box needs some sort of hi-pass (subsonic) filter to keep the driver from bottoming out. (35hz Q=.707 would work nicely).
This is where I snagged the cool spreadsheet:
http://www.geocities.com/adrian_mack/
-Hans |
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| mateo88 |
Cool, thanks Hans! I figured the x-max would be the limiting factor, but I wasn't sure how to find out how far the driver could go. Much appreciated. :)
-Matt |
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