Raveland driver for dipole (ripole) bass - diyAudio
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Old 15th March 2006, 08:24 AM   #1
Techz is offline Techz  Netherlands
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Default Raveland driver for dipole (ripole) bass

Hello,

I want to built 2 subwoofers to support my Mordaunt Short MS902 bookshelfs. I was thinking about the ripole described by Rudolf some time ago. This because their compact size and usable as a small speaker stand.

Just looking for a nice driver here in the netherlands. I found the following options:

Peerless SLS-315 (€70)

http://www.tymphany.com/datasheet/printview.php?id=38

Raveland AXX1515 (€90)

http://www.speakertrade.com/raveland...X_Rev2_WEB.pdf

I think the Raveland has more output, because it's bigger and has higher xmax. Just never heard of anyone using the raveland for a dipole subwoofer.
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Old 15th March 2006, 12:38 PM   #2
Rudolf is offline Rudolf  Germany
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TechZ,

I´ve heard of some people using Peerless SLS 12" and 15" in ripoles/dipoles with satisfying results.

The AXX1515 indeed doesn´t have a dipole history. I faintly remember some talk about too much noise in an open baffle.

If funds permit, I would opt for the 15" SLS.

Rudolf
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Old 15th March 2006, 01:45 PM   #3
Techz is offline Techz  Netherlands
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Thanks for replying Rudolf,

But i believe the SLS 15" is not available in the Netherlands, The SLS315 is a 12".
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Old 17th March 2006, 11:49 AM   #4
Techz is offline Techz  Netherlands
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Default JBL ??

I can get these for cheap:

http://www.jbl.com/car/products/prod...CheckProduct=Y
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Old 18th March 2006, 03:39 PM   #5
vinnie is offline vinnie  Norway
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I have considered using 4 of these
in dual ripol , they are very cheap.
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Old 18th March 2006, 07:32 PM   #6
Rudolf is offline Rudolf  Germany
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Quote:
Originally posted by vinnie
I have considered using 4 of these
in dual ripol , they are very cheap.
Caution!

I have two of these
They have a (small) problem with noise from the pole vent. Would not affect normal rock music, but when only producing low bass you can hear air pressed through the pole piece.
BTW. Qts of my drivers was MUCH higher than advertised.

I see, that the 1535 is a different driver, but the vendor doesn´t seem to care too much about pole vent noise.
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Old 18th March 2006, 08:59 PM   #7
Techz is offline Techz  Netherlands
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I will try the 12" SLS first, since they are not expensive here, 66€. If i like their sound, i can always try bigger drivers for more SPL.
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Old 19th March 2006, 05:04 AM   #8
gnnett is offline gnnett  New Zealand
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About to order SLS 12". Is there a thread providing recommended plate amps and/or passive eq requirements with other power amps and cross over recommendations?

Lazy I know but I will keep looking.

Kind Regards

Grantn
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Old 19th March 2006, 05:55 PM   #9
Calvin is offline Calvin  Germany
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Default recommendations

Hi,

its nearly impossible to give recommendations with just the parameters listed on Websites.
The GBS 1535 e.g. is hardly usable, because the mesh sitting in the pole vent leads to horrible noise. Closing the vent doesn´t help at all but generates even more noise (compression below the spider). It might help to break off the plastic cap covering the magnet to get the mesh out of the pole vent. Btw: A correct and fair price tag for this driver would read ~50-60€. A UVP of 90€ is ridicolously high

The GBS 515 can be used with good results, but I´m a bit surprised to see the ebay auction offering housings too. This dipole-style (ripol/DRS) is patented too and the seller doesn´t have a license!
Too, the claimed parameters are not the ones You measure
And again..the UVP is a fantasy number
The original chinese supplier ships them with ´fantasy´- parameters and GBS doesn´t measure either. E.g the claimed +-7mm linear throw are simply not veryfiable.

I wouldn´t recommend the Raveland AXX. For my taste too much mass to move and not at all a quiet driver.

The SLS12 is one of the very best choices for dipole subs. If You need higher SPLs than I´d opt rather for more SLSes instead of using different drivers!

jauu
Calvin
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Old 19th March 2006, 06:23 PM   #10
4real is offline 4real  Netherlands
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Great topic since I'm also looking at dipool woofers. The SLS 12 is also one of my choises.

Another one thet might be nice: Beyaa SM115N, two of them per side.

Or, if think one is engough: Beyma 15P1000. It is expensive though.

I'm still not sure if I should take one or two woofer per side. with 12", I guess you definanly need two, but if you have a nice 15" woofer...?
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