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A little subwoofer advice, please [message #34281]

Thu, 29 November 2001 16:00

BillEpstein
Messages: 886
Registered: May 2009

Illuminati (2nd Degree)

Tried the Theatres as HT speakers over the holiday, they kicked some serious alien butt. Now the little Missions on stands look so forlorn next to the screen I want them to have a subwoofer playmate.
I found a sub-woofer amp at MCM for $70, pretty good features and specs. Likewise Parts Express has a 10" woofer Ultimate WR1025cs shielded for $22.50. Previous posts seem to indicate 3.5 cu ft box kind of generic, yes? I tried looking at Boxplot and PiAlign but I get cramps when I see graphs and numbers. It was a freakin' miracle I figured out how to download 'em!
So the woof has:
fs 36Hz
vas 1.89 cu ft
qms 4.04
qes .84
qts .69
xmax 2.6
Anyone care to indulge me as to box and port dimensions? And would 2 woofs in one cabinet make sense? If so, does one just connect pos to pos, neg to neg like bi-wiring? or what?

Thanking someone in advance ......

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Re: A little subwoofer advice, please [message #34282 is a reply to message #34281]

Thu, 29 November 2001 17:45

steve f
Messages: 236
Registered: May 2009

Master

Just wanted to add my .02 worth. Take a look at adire audio's website. They offer some interesting reasonable cost drivers and kit plans too. www.adireaudio.com

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Re: A little subwoofer advice, please [message #34284 is a reply to message #34281]

Fri, 30 November 2001 00:23

Wayne Parham
Messages: 18682
Registered: January 2001

Illuminati (33rd Degree)

That woofer has a bit higher Q than I'd like to see, but the boxes it works best in are 3 to 10 cubic feet, tuned to 20-25Hz. Another option is infinite baffle, perhaps mounted in the ceiling. You could put this woofer on a large open baffle, if you're interested in that sort of thing.

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Re: Hey Wayne.... 10 cu. ft.?!!! I was inspired to try boxplot [message #34292 is a reply to message #34281]

Fri, 30 November 2001 14:07

BillEpstein
Messages: 886
Registered: May 2009

Illuminati (2nd Degree)

Found a driver with 1/3 the qts figuring 1/3 the size. A 12" hd shielded on special for $69. One good driver instead of 2 cheapies.
fs 28
vas 3.99
qms 11.07
qes .33
qts .32
xmax 7.5mm
Boxplot says 1.94 cu ft 22X9.6X15.5. with a 3X6 vent. That seems a reasonable size and the plot looks like flat from 25Hz up but I don't understand the 3 colored waves.
Opinions?

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