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Old 6th January 2009, 05:09 AM   #1
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Default Best small musical sub?

I'm looking for a small sub to be used with two RS150/Neo3PDR sealed-box speakers in a sub-sat arrangement. I really only need from 30hz to 80hz or so. I've never heard a ported sub I really liked, so I was hoping to try something different.

Options include:

-Peerless XLS 10 with passive radiator. They don't play deep enough in a sealed box, but with the matching PR, you can use a very small box anyway. You can get one of these lightly used for $100 or so, but the PR seems to be found only at Madisound for $85. Ouch!

-JL 8W7 (it measures quite well, apparently) in a small sealed box. Many drivers are ill-suited to small boxes - apparently, the compression and decompression of the air can cause odd-order harmonics - bu the 8W7 is made for it. It's a great sub....but look at the pricetag!

-Unknown subwoofer in a tall transmission line. While this sub would be big, if built tall enough it would take up very little floor space. Not going to be pleasant to look at, though.

Any other ideas?
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Old 6th January 2009, 07:14 AM   #2
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Default Re: Best small musical sub?

Quote:
Originally posted by Spasticteapot
-Peerless XLS 10 with passive radiator. They don't play deep enough in a sealed box, but with the matching PR, you can use a very small box anyway. You can get one of these lightly used for $100 or so, but the PR seems to be found only at Madisound for $85. Ouch!
A PR is just a substitute for a port (with an additional resonance)

Quote:
-JL 8W7 (it measures quite well, apparently) in a small sealed box. Many drivers are ill-suited to small boxes - apparently, the compression and decompression of the air can cause odd-order harmonics - bu the 8W7 is made for it. It's a great sub....but look at the pricetag!
CSS SDX7 works well in a small sealed box.

dave
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Old 6th January 2009, 07:27 AM   #3
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The SDX7s are not subwoofers. Even if I used two, I'd still blow the voice coils if I wanted an F3 of 30hz.
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Old 6th January 2009, 07:51 AM   #4
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Quote:
Originally posted by Spasticteapot
The SDX7s are not subwoofers. Even if I used two, I'd still blow the voice coils if I wanted an F3 of 30hz.
Don't be so sure. I've measured flat to 25 in room with sealed SDX7 (with a touch of EQ) I typically use a pair.

Maybe i should ask how small is small?

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Old 6th January 2009, 10:45 AM   #5
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Will these do ??
shipping too much to OZ but maybe??

http://cgi.ebay.com.au/JL-AUDIO-SUBW...742.m153.l1262
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Old 6th January 2009, 12:44 PM   #6
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Just an idea, my "invisible" TL sub

http://www.audioxpress.com/magsdirx/...nnesen2835.pdf

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Bjorn
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Old 6th January 2009, 01:04 PM   #7
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A Ripole might be worth consideration.
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Old 6th January 2009, 02:42 PM   #8
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http://www.linkwitzlab.com/Pluto/subwoofer.htm
would probably be where I was looking.

You could also look at the scanspeak 23W but its pricey and such a small driver playing so deep is going to run out of xmax pretty fast.

You could also look at the xls10 sealed with a Linkwitz transform
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Old 6th January 2009, 04:07 PM   #9
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Quote:
Originally posted by Bjohannesen
Just an idea, my "invisible" TL sub

http://www.audioxpress.com/magsdirx/...nnesen2835.pdf

Regards
Bjorn
Interesting, but I don't really have a place to put the flat part of the sub. I'd also like to use a higher-end driver, and I can't find a place that will let me download mathcad.



Quote:
Originally posted by Dr.EM
A Ripole might be worth consideration.
I would assume that the lack of direct radiation would be bad for high-frequency response?
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Old 6th January 2009, 04:39 PM   #10
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Quote:
Originally posted by Spasticteapot
I would assume that the lack of direct radiation would be bad for high-frequency response?
Why do you want HF out of a sub? For 80Hz, side firing will be fine.
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