2 Tempests or Quad Quatro? Whaddaya think?

jmiyake · 27th June 2003, 09:53 AM

So let's say, theoretically, that I have $300 for subwoofer drivers. (OK that happens to be true.)

For this amount I could get 2 Adire Audio Tempests, or 4 of the new Parts Express Quatro 15" subs.

What do you see as the pros and cons of these approaches? Also if you think you have a better $300 option, please share.

James

jmiyake · 27th June 2003, 02:27 PM

4 Dayton Quatros

vs

2 Tempests

leadbelly · 27th June 2003, 02:39 PM

Or, jump on the dipole bandwagon and get 2 DPL12's:

http://www.adireaudio.com/diy_audio/...dire/dpl12.htm

PaulHilgeman · 27th June 2003, 03:02 PM

Get the quattros. There is no replacement for displacement, and the efficency of the 15 inch quattro is very nice.

When your 12's would be moving 4 mm, the quattro will be moving 1 mm. With 4 15's you have about as much Sd as 8 twelves.

-Paul

jmiyake · 28th June 2003, 03:56 AM

lesser motion would lead to less distortion. More speed. Any down side to the Quatros?

leadbelly · 28th June 2003, 05:08 AM

Well, you haven't said anything about the application. Music or HT? Stereo or single? Enclosure? Or are you only asking a brand quality issue?

jmiyake · 28th June 2003, 06:48 AM

about 50% Music, 50% HT. Used in conjuction with my DIY line arrays. The variety of music is very wide.

I am still thinking about the enclosure. With 15" woofers, I understand a low tuned (less than 20hz) vented cabinet is the way to go.

Any thoughts?

planet10 · 28th June 2003, 07:06 AM

I'm a big fan of stereo push-push boxes which requires 4 drivers minimum.

With the Q on the Daytons they look like they might do well in a TL.... the big question is, do you have the room for two refrigerator sized boxes?

On the plus side you could get away with some fairly small amps.

dave

jmiyake · 28th June 2003, 07:35 AM

It is one of my favorites, and I have used your site repeatedly. Glad you are a Mac fan, so am I. What design software do you use for speakers?

I am fascinated by t-lines but know very little.

So if I were going to go with a pair of T-lines, they would be a pair of Tempests. And they would be huge! I don't know if this would work but let's think about it.

So if i have say 69" for length, and 30" for height, maybe 18" or so deep. I could do something like a single fold tapered line. I think the size at the large end could be about 2.7sd, and the terminus about .25sd to .5sd. The line length woulc be something about 7.5' to 8.5'
Do you think that might work?

James

27th June 2003, 09:53 AM	#1
jmiyake diyAudio Member Join Date: Apr 2002 Location: San Jose, Ca.	2 Tempests or Quad Quatro? Whaddaya think? So let's say, theoretically, that I have $300 for subwoofer drivers. (OK that happens to be true.) For this amount I could get 2 Adire Audio Tempests, or 4 of the new Parts Express Quatro 15" subs. What do you see as the pros and cons of these approaches? Also if you think you have a better $300 option, please share. James

27th June 2003, 02:39 PM	#3
leadbelly diyAudio Member Join Date: Dec 2002 Location: Calgary, Alberta	Or, jump on the dipole bandwagon and get 2 DPL12's: http://www.adireaudio.com/diy_audio/...dire/dpl12.htm __________________ Aerodynamics are for people who can't build engines. Enzo Ferrari

28th June 2003, 03:56 AM	#5
jmiyake diyAudio Member Join Date: Apr 2002 Location: San Jose, Ca.	an excellent point lesser motion would lead to less distortion. More speed. Any down side to the Quatros?

28th June 2003, 05:08 AM	#6
leadbelly diyAudio Member Join Date: Dec 2002 Location: Calgary, Alberta	Well, you haven't said anything about the application. Music or HT? Stereo or single? Enclosure? Or are you only asking a brand quality issue? __________________ Aerodynamics are for people who can't build engines. Enzo Ferrari

28th June 2003, 06:48 AM	#7
jmiyake diyAudio Member Join Date: Apr 2002 Location: San Jose, Ca.	Application about 50% Music, 50% HT. Used in conjuction with my DIY line arrays. The variety of music is very wide. I am still thinking about the enclosure. With 15" woofers, I understand a low tuned (less than 20hz) vented cabinet is the way to go. Any thoughts?


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27th June 2003, 02:27 PM	#2
jmiyake diyAudio Member Join Date: Apr 2002 Location: San Jose, Ca.	4 Dayton Quatros vs 2 Tempests

27th June 2003, 03:02 PM	#4
PaulHilgeman Account Disabled Join Date: Dec 2002	Get the quattros. There is no replacement for displacement, and the efficency of the 15 inch quattro is very nice. When your 12's would be moving 4 mm, the quattro will be moving 1 mm. With 4 15's you have about as much Sd as 8 twelves. -Paul

28th June 2003, 07:06 AM	#8
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	Re: 2 Tempests or Quad Quatro? Whaddaya think? I'm a big fan of stereo push-push boxes which requires 4 drivers minimum. With the Q on the Daytons they look like they might do well in a TL.... the big question is, do you have the room for two refrigerator sized boxes? On the plus side you could get away with some fairly small amps. dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

28th June 2003, 07:35 AM	#9
jmiyake diyAudio Member Join Date: Apr 2002 Location: San Jose, Ca.	Hi Dave love your sight It is one of my favorites, and I have used your site repeatedly. Glad you are a Mac fan, so am I. What design software do you use for speakers? I am fascinated by t-lines but know very little. So if I were going to go with a pair of T-lines, they would be a pair of Tempests. And they would be huge! I don't know if this would work but let's think about it. So if i have say 69" for length, and 30" for height, maybe 18" or so deep. I could do something like a single fold tapered line. I think the size at the large end could be about 2.7sd, and the terminus about .25sd to .5sd. The line length woulc be something about 7.5' to 8.5' Do you think that might work? James

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