32 sub array questions

wolf-audio · 13th April 2009, 05:29 PM

considering building a 32 12"sub array using these http://www.parts-express.com/pe/show...number=292-322

using this series parallel configuration and a behringer ep2500 for the amp, probly 2 4sub towers in each corner to even out room response.
was thinking of 1.25 cu. feet sealed per driver, any changes/recommendations?

dyohn · 13th April 2009, 05:33 PM

All I can say is, Why? There are better solutions that won't require such a huge installation. What are your specific design goals?

David_Web · 13th April 2009, 05:56 PM

A quick calculation confirms the theory that they will be boomy as crap with a one note bass at around 80Hz. (if I entered everything correct that is).
Qes is uncomfortably high (makes my skin crawl) and Qms follows due.
They won't even work in an OB without some aperiodic (acoustical resistor) or similar. (IMHO).

So they are very expensive as they offer little to no use for the money (IMHO of course).

I personally would go for two or four good PA drives. 12" or 15" seems to offer the best value.
Although it depends on what you can find and at what price.

*edit* 32 wrongs don't make one right.

In my rather small world of experience a lot of 'cheap' does not make up for quality. To bad it took some time to learn

Not to say that you can't make good stuff with cheap. It just takes lots of selection and skill.

wolf-audio · 13th April 2009, 06:32 PM

design goals are to get loud, evenly distributed bass in a basement workshop 16'w x 17'L 7'h, the 1.25cf sealed was just a suggestion. as far as the multiple drivers, I would want at least 1 15 per corner.

tinitus · 13th April 2009, 11:13 PM

Those woofers you suggest will probably be pretty much out of control even at very little exursion

At the present I believe theres no doubt that the best and cheapest way to high SPL subs is tapped-horns

jbell · 13th April 2009, 11:45 PM

Quote:

Originally posted by wolf-audio
in a BASEMENT WORKSHOP 16'w x 17'L 7'h

In a workshop, you should ALWAYS be wearing hearing protection...
In a basement, with 7' ceilings -- sound will suck...

Do yourself a favor, spend you money on a great pair of sennheiser closed headphones... -3db@ 12hz on some models, with 112db@1v from your iPod.

http://www.sennheiser.com/sennheiser...t=005343&row=3

dyohn · 14th April 2009, 12:22 AM

Yea, no way would I recommend that sort of array, especially not with those woofers. When you say "loud" what do you mean? A couple of good 15's should hit 120dbSPL in the correct enclosure.

planet10 · 14th April 2009, 12:26 AM

You'd do better to spend the same money on 2 or 4 much better woofers...

dave

homebuilder · 14th April 2009, 06:38 PM

This type of entry makes me wonder why we even bother to answer "ideas" like that. Why not have 2 forums..one for serious inquiries, and one for the rest?

32 woofers in a workshop...give us all a break.

I like the headphone idea!

HK26147 · 14th April 2009, 07:03 PM

Those Senns 595 are open air...
I've had many Sennheiser's - got 580's that I have been using for close to 10 years.
What's Sennheiser's best sounding closed design?

I share the opinion: 32 cheap 12's in a basement/workshop is NG and waste of time and money.

14th April 2009, 12:26 AM	#8
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	You'd do better to spend the same money on 2 or 4 much better woofers... dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

14th April 2009, 06:38 PM	#9
homebuilder diyAudio Member Join Date: Feb 2008	Why ask why? This type of entry makes me wonder why we even bother to answer "ideas" like that. Why not have 2 forums..one for serious inquiries, and one for the rest? 32 woofers in a workshop...give us all a break. I like the headphone idea!

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13th April 2009, 05:33 PM	#2
dyohn diyAudio Member Join Date: Feb 2005 Location: CA	All I can say is, Why? There are better solutions that won't require such a huge installation. What are your specific design goals?

13th April 2009, 05:56 PM	#3
David_Web diyAudio Member Join Date: Sep 2008	A quick calculation confirms the theory that they will be boomy as crap with a one note bass at around 80Hz. (if I entered everything correct that is). Qes is uncomfortably high (makes my skin crawl) and Qms follows due. They won't even work in an OB without some aperiodic (acoustical resistor) or similar. (IMHO). So they are very expensive as they offer little to no use for the money (IMHO of course). I personally would go for two or four good PA drives. 12" or 15" seems to offer the best value. Although it depends on what you can find and at what price. edit 32 wrongs don't make one right. In my rather small world of experience a lot of 'cheap' does not make up for quality. To bad it took some time to learn Not to say that you can't make good stuff with cheap. It just takes lots of selection and skill.

13th April 2009, 06:32 PM	#4
wolf-audio diyAudio Member Join Date: Apr 2009	design goals are to get loud, evenly distributed bass in a basement workshop 16'w x 17'L 7'h, the 1.25cf sealed was just a suggestion. as far as the multiple drivers, I would want at least 1 15 per corner.

13th April 2009, 11:13 PM	#5
tinitus diyAudio Moderator Join Date: Nov 2005	Those woofers you suggest will probably be pretty much out of control even at very little exursion At the present I believe theres no doubt that the best and cheapest way to high SPL subs is tapped-horns

14th April 2009, 12:22 AM	#7
dyohn diyAudio Member Join Date: Feb 2005 Location: CA	Yea, no way would I recommend that sort of array, especially not with those woofers. When you say "loud" what do you mean? A couple of good 15's should hit 120dbSPL in the correct enclosure.

14th April 2009, 07:03 PM	#10
HK26147 diyAudio Member Join Date: Jan 2008	Those Senns 595 are open air... I've had many Sennheiser's - got 580's that I have been using for close to 10 years. What's Sennheiser's best sounding closed design? I share the opinion: 32 cheap 12's in a basement/workshop is NG and waste of time and money.

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