Music sub -2 sdx10 or 1 sdx15 ? - Page 2 - diyAudio
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Old 25th January 2010, 12:42 PM   #11
Henkjan is offline Henkjan  Netherlands
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Quote:
Originally Posted by Brett View Post
Have you actually used them that high? If so, could you post some details of the implementation?
no, I have no 1st hand experience with them in a set-up like this (I do have experience with a different sub crossed at 150Hz to sats), but if you take a look at the FR curve it is nice flat and smooth, unlike some other subs that start to loose SPL above 100Hz and/or show cone break-up.
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Old 25th January 2010, 03:13 PM   #12
Bfpca is offline Bfpca  Canada
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Hi Dave

I have compared the response curves in Winisd. With the boxes I spec'd at the start of this thread the 2 10's would have a Q of .65 and f3 of 44hz. The 15" a Q of .71 f3 about 35hz. While you cannot look at F3 alone, F3 and the Q of the sealed alignment define the response below F3. The elephant in the China shop in all this is placement and room modes/room gain. I have developed an adjustable eq circuit that will allow variable boost to deal with room gain. I have been away from this hobby for a few years and am just getting back up to speed again. If anyone is using sdx15's in a sealed box for music I would like to know your opinions of how they perform.

Thanks
Brian


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Brian,

Toole has shown that F3 is essentially meaningless in terms of bass extension. Compare F10.

dave
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Old 29th May 2010, 11:17 AM   #13
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Is there no one that has actually measured an SDX10 yet? I want to go as high as 200-300 Hz but due to earlier posts I doubt it will be possible? However, a measured response should really put my mind at ease either way.
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Old 29th May 2010, 08:30 PM   #14
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I have a pair sitting here, but too many other drivers have gotten my attention. I won't be measuring anything but T/S anytime soon.

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Old 29th May 2010, 11:23 PM   #15
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Quote:
Originally Posted by buggsson View Post
Is there no one that has actually measured an SDX10 yet? I want to go as high as 200-300 Hz but due to earlier posts I doubt it will be possible? However, a measured response should really put my mind at ease either way.
Then maybe consider the AE AV10H. The 12" versions have been used as high as 500Hz in some projects, so the 10" should easily meet your BW requirements.
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Old 30th May 2010, 11:56 AM   #16
Bfpca is offline Bfpca  Canada
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Hi

I have postponed my sub upgrade project. I actually converted my old 2 x 15" sub into 2 seperate 15" subs. This works better in my room. I am thinking about 2 gr research 12" servo subs in the future but it is not a priority now.

Brian
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Old 3rd June 2010, 08:58 PM   #17
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Originally Posted by Brett View Post
Then maybe consider the AE AV10H. The 12" versions have been used as high as 500Hz in some projects, so the 10" should easily meet your BW requirements.
Yes, that driver went directly to my shortlist for further evaluation.

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Originally Posted by Bfpca View Post
Hi

I have postponed my sub upgrade project. I actually converted my old 2 x 15" sub into 2 seperate 15" subs. This works better in my room. I am thinking about 2 gr research 12" servo subs in the future but it is not a priority now.

Brian
I've heard that seconded more than once, that often two smaller subs work better than one large.
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Old 4th June 2010, 06:55 AM   #18
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Originally Posted by buggsson View Post
I've heard that seconded more than once, that often two smaller subs work better than one large.
Haven't you read the Harman multi-subs paper yet?
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Old 10th June 2010, 06:29 PM   #19
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Originally Posted by Brett View Post
Haven't you read the Harman multi-subs paper yet?
No, that one I've missed until now, and it will be read after I finish reading a dissertation on loudspeaker cabinet diffraction. Thank you for the direct link, that's appreciated.
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