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Old 14th February 2013, 01:09 PM   #11
lolo is offline lolo  France
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these?

Comparison of different near field and far field subwoofer configurations
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Old 14th February 2013, 01:13 PM   #12
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Markus

How is the low end, vs other 12 inch * 2 dipoles?
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Old 14th February 2013, 01:32 PM   #13
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I've used H-frame dipoles in those measurements.

Click the image to open in full size.
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Old 14th February 2013, 01:37 PM   #14
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Quote:
Originally Posted by otto88 View Post
Markus

How is the low end, vs other 12 inch * 2 dipoles?
Well, there IS a low end This is with a 9dB boost at 24Hz and a 24dB high pass at 20Hz:

Click the image to open in full size.

This is unsmoothed data and 1Hz frequency resolution
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Old 15th February 2013, 08:40 AM   #15
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Nice - what are the woofers
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Old 15th February 2013, 10:04 AM   #16
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Nice - what are the woofers
In which configuration, dipole or Ripole? The dipole is described at
Visaton ws25e-8 and H-frame

I promised Axel Ridtahler (inventor of the patented Ripole) not to disclose details about my construction. You would need to contact him directly at axel.ridtahler [at] kit.edu
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Old 15th February 2013, 12:26 PM   #17
sumacSK is offline sumacSK  Slovakia
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Quote:
Originally Posted by markus76 View Post
Well, there IS a low end This is with a 9dB boost at 24Hz and a 24dB high pass at 20Hz:

Click the image to open in full size.

This is unsmoothed data and 1Hz frequency resolution
Wow that is funtastic result for such a simple and inexpensive subwoofer config. Where do you cross those subs? Did you ever noticed "sounds coming from the back"? How much SPL at listening position can you produce with those two subs (visaton drivers in H frames)?
thanks
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Old 15th February 2013, 12:30 PM   #18
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The frequency plot shows the Ripole. Didn't measure max. SPL for the H-frames.
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Old 15th February 2013, 07:16 PM   #19
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This FR is impressive, but remember SPL and low frequency response will be generated by cone area, cone movement and cone resonance. Now nothing is disclosed about the speaker units, so SPL dB is not known and 12" as judged what markus said himself is probably a SLS12 from Peerless. By itself it won't play excessivly high in a Ripole. But be a superb SUB. As Ripoles in fact are exellent OB SUBs with the right speakers.

/Erling

Last edited by skorpion; 15th February 2013 at 07:29 PM.
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Old 15th February 2013, 07:56 PM   #20
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Quote:
Originally Posted by markus76 View Post
Well, there IS a low end This is with a 9dB boost at 24Hz and a 24dB high pass at 20Hz:

Click the image to open in full size.

This is unsmoothed data and 1Hz frequency resolution
Curious, what was the measurement distance?
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