My open baffle dipole with Beyma TPL-150 - Page 118

StigErik · 6th November 2011, 08:52 PM

I agree that a diffused front wall reflection is better than a single strong reflection.
But... personally I care more for that exceptionally precise stereo image, resolution, dynamics and "blackness" you get from no front wall reflection. Yes - a little front wall reflection will sound bigger, but I dont like it. I have worked hard to get it below -30 dB, where its not audible anymore.

a.wayne · 11:19 PM

Hello Stig,

If you ever try the room in reverse, please let us know your findings ...any pics of the speaker side of the room ..

regards,

Builder Brad · 20th February 2012, 07:56 PM

hi Stig,

what are the depths of the various 1" squares in your diffuser panels?

Brad

StigErik · 20th February 2012, 08:11 PM

Builder Brad · 20th February 2012, 09:24 PM

cheers Stig,

I hoped that the various depths would be between 4 inches max to 1 inch. There is no way I could disguise that as a funky kind of wall covering, LOL.

I wonder if some of the 3s and 4s could have part of their depth hidden behind the 2s. This would make for a panel around 150mm deep. more complicated, but I might get away with it.

Brad

StigErik · 21st February 2012, 01:31 PM

You can of course reduce the total depth, but that would affect the bandwith of the diffusor at low frequencies. Of you make all coloums half of what they are in my diagram, lower cut-off will be one octave higher, or approx 1150 Hz.

StigErik · 25th February 2012, 04:32 PM

Ok, here's the last update, and it might be the very last thing I do with this system.

The news are:
Hypex Ncore amps - two driving the RD-75 ribbons, and four driving the woofers - and now there's sixteen of them.... a few pics without front grilles on the woofers below.

Helmuth · 25th February 2012, 04:41 PM

Quote:

Originally Posted by StigErik

Ok, here's the last update, and it might be the very last thing I do with this system.

The news are:
Hypex Ncore amps - two driving the RD-75 ribbons, and four driving the woofers - and now there's sixteen of them.... a few pics without front grilles on the woofers below.

I can't see the system there are woofers standing in front of it.

The wall of bass.

StigErik · 25th February 2012, 04:48 PM

There is no such thing as too much overkill!

twest820 · 25th February 2012, 04:54 PM

Any reduction in low frequency THD from the latest doubling?

6th November 2011, 08:52 PM	#1171
StigErik diyAudio Member Join Date: Feb 2008	I agree that a diffused front wall reflection is better than a single strong reflection. But... personally I care more for that exceptionally precise stereo image, resolution, dynamics and "blackness" you get from no front wall reflection. Yes - a little front wall reflection will sound bigger, but I dont like it. I have worked hard to get it below -30 dB, where its not audible anymore. __________________ dipoles dipoles dipoles dipoles dipoles dipoles dipoles dipoles and dipoles

6th November 2011, 10:57 PM	#1172
a.wayne diyAudio Member Join Date: May 2008 Location: Front Row Center	Hello Stig, If you ever try the room in reverse, please let us know your findings ...any pics of the speaker side of the room .. regards, Last edited by a.wayne; 6th November 2011 at 11:19 PM.

20th February 2012, 08:11 PM	#1174
StigErik diyAudio Member Join Date: Feb 2008	__________________ dipoles dipoles dipoles dipoles dipoles dipoles dipoles dipoles and dipoles

21st February 2012, 01:31 PM	#1176
StigErik diyAudio Member Join Date: Feb 2008	You can of course reduce the total depth, but that would affect the bandwith of the diffusor at low frequencies. Of you make all coloums half of what they are in my diagram, lower cut-off will be one octave higher, or approx 1150 Hz. __________________ dipoles dipoles dipoles dipoles dipoles dipoles dipoles dipoles and dipoles

25th February 2012, 04:48 PM	#1179
StigErik diyAudio Member Join Date: Feb 2008	There is no such thing as too much overkill! __________________ dipoles dipoles dipoles dipoles dipoles dipoles dipoles dipoles and dipoles


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20th February 2012, 07:56 PM	#1173
Builder Brad diyAudio Member Join Date: Jan 2006 Location: Kent, UK	hi Stig, what are the depths of the various 1" squares in your diffuser panels? Brad

20th February 2012, 09:24 PM	#1175
Builder Brad diyAudio Member Join Date: Jan 2006 Location: Kent, UK	cheers Stig, I hoped that the various depths would be between 4 inches max to 1 inch. There is no way I could disguise that as a funky kind of wall covering, LOL. I wonder if some of the 3s and 4s could have part of their depth hidden behind the 2s. This would make for a panel around 150mm deep. more complicated, but I might get away with it. Brad

25th February 2012, 04:54 PM	#1180
twest820 diyAudio Member Join Date: Jun 2009 Location: Orygun	Any reduction in low frequency THD from the latest doubling?

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