^I'll do that, but I have one problem. I can not find for the life of me the t/s parameters off a 12" Type R SVC (SWR-1240) so that I can make a box with Q of .707

If anyone knows the params of that sub please PM or email me!!

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I did a quick search and came up with this:

12"
impedance 4
power 300w/1000w RMS
Frequency responce Fs~1khz
Sensitivity 87dB
d.c. coil resistance (re) 3.6
inductance 1khz 2.38mh 20khz .85mh
free air 26hz
equivalent stiffness (Vas) 66L
Qms/Qes/Qts 10.39/0.38/0.37
xmax/xpeak 12.9 / 25.8mm
mechanical excursion 55mm
Gap/ Coil height (hag/hvc) 10/35.8mm
cone area (sd) 467.59cm2
diaphragm material kevlar
voice coil diameter 50mm


For a Q of .707 your box would have to be around 0.9 cubic feet given those specs.

[ August 31, 2003, 12:36 PM: Message edited by: tweek ]

Google must hate me, I'm serious.
What did you have to type in the search to get that result?

Thanks a million, btw!!

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I have my ways

No problem [img]graemlins/beer.gif[/img]

For .707 and those specs I came up with 20.447L or .722 cu ft enclosure.

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what program are you using? WinISD pro gave me 0.9cf

http://www.mhsoft.nl/spk_calc.asp#sealed

lol, it's a little less complex than WinISD, but maybe I should give it a try.

If you get anything different, let me know.

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hey guys. will the 1/4 wave theory work if your doing a wall with 2 subs in a suv or truck? for a 2 woofer wall, where should the port be, and the woofers placed? i've heard port opposite mic, and subs vertical inline with mic. is this true?

livin' loud!