Open-Baffle Subs – “Subwoofer Origami” - Page 2

lolo · 14th February 2013, 01:09 PM

these?

Comparison of different near field and far field subwoofer configurations

otto88 · 14th February 2013, 01:13 PM

Markus

How is the low end, vs other 12 inch * 2 dipoles?

markus76 · 14th February 2013, 01:32 PM

Quote:

Originally Posted by lolo

these?

Comparison of different near field and far field subwoofer configurations

I've used H-frame dipoles in those measurements.

markus76 · 14th February 2013, 01:37 PM

Quote:

Originally Posted by otto88

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:

This is unsmoothed data and 1Hz frequency resolution

otto88 · 15th February 2013, 08:40 AM

Nice - what are the woofers

markus76 · 15th February 2013, 10:04 AM

Quote:

Originally Posted by otto88

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

sumacSK · 15th February 2013, 12:26 PM

Quote:

Originally Posted by markus76

Well, there IS a low end

This is with a 9dB boost at 24Hz and a 24dB high pass at 20Hz:

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

markus76 · 15th February 2013, 12:30 PM

The frequency plot shows the Ripole. Didn't measure max. SPL for the H-frames.

skorpion · 07:29 PM

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

john k... · 15th February 2013, 07:56 PM

Quote:

Originally Posted by markus76

Well, there IS a low end

This is with a 9dB boost at 24Hz and a 24dB high pass at 20Hz:

This is unsmoothed data and 1Hz frequency resolution

Curious, what was the measurement distance?

15th February 2013, 12:30 PM	#18
markus76 diyAudio Member Join Date: May 2008 Location: Switzerland	The frequency plot shows the Ripole. Didn't measure max. SPL for the H-frames. __________________ Markus

15th February 2013, 07:16 PM	#19
skorpion diyAudio Member Join Date: Oct 2004	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.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
First Open Baffle project. EV LT-12 Wolverine's w/ t-35 tweeters and sub helper subs	jonirvine	Multi-Way	0	27th January 2012 03:57 AM
Lab 15 subs on open baffle?	Racket Scientist	Full Range	3	24th August 2010 05:12 PM
Office desk as open baffle subwoofer	Franz Gysi	Subwoofers	8	29th June 2009 06:13 PM
Open baffle subs and Maggies	Luke G	Planars & Exotics	10	3rd February 2008 03:55 AM
For Full Range With Subs -- Sealed Box Vs Open Baffle ?	DrDeville	Full Range	4	21st January 2007 05:26 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

14th February 2013, 01:09 PM	#11
lolo diyAudio Member Join Date: May 2010 Location: somewhere by the border..	these? Comparison of different near field and far field subwoofer configurations

14th February 2013, 01:13 PM	#12
otto88 diyAudio Member Join Date: Dec 2007	Markus How is the low end, vs other 12 inch * 2 dipoles?

15th February 2013, 08:40 AM	#15
otto88 diyAudio Member Join Date: Dec 2007	Nice - what are the woofers