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PSD2013 [message #77806] Mon, 09 September 2013 18:12 Go to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18783
Registered: January 2001
Illuminati (33rd Degree)

Eminence has just introduced a new compression driver, which they say is smoother than the PSD2002. The PSD2002 is a good value driver, so if this new driver is smoother, it might be a good part in-between the PSD2002 and the DE250 upgrade. I'll bring in a couple and see.
Re: PSD2013 [message #78342 is a reply to message #77806] Tue, 12 November 2013 05:51 Go to previous messageGo to next message
tubemax is currently offline  tubemax
Messages: 37
Registered: February 2012
Location: Netherlands
Baron
Hi Wayne,

Is there any news regarding new compression driver, did you get a chance to test it with H290C and how does it sound?

Regards,
Max
Re: PSD2013 [message #78345 is a reply to message #78342] Tue, 12 November 2013 08:48 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18783
Registered: January 2001
Illuminati (33rd Degree)

No, I did order a couple to test with, but haven't done any measurements yet. I'll post here with results.

Re: PSD2013 [message #78346 is a reply to message #77806] Tue, 12 November 2013 12:37 Go to previous messageGo to next message
tubemax is currently offline  tubemax
Messages: 37
Registered: February 2012
Location: Netherlands
Baron
OK, thanks!
Btw, is there any fresh review of 3Pi speakers with Eminence Definimax 4012HO by now? Would be interested to know what is the difference and how close is to JBL 2226H sound wise, also it would be nice to see new measured response from updated speaker if possible.
Re: PSD2013 [message #78347 is a reply to message #78346] Tue, 12 November 2013 14:42 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18783
Registered: January 2001
Illuminati (33rd Degree)

The three Pi speaker with Definimax woofer has an EBS alignment, so it sounds gently rolled off down low. It isn't so pronounced that it sounds weak without subs, but it definitely sounds better with them. That's fine, it's all part of the design philosophy. I do not incorporate BSC into my speakers because they are intended to be used with flanking subs anyway.

http://www.pispeakers.com/Measurements/threePi_Definimax_response.jpg
three π loudspeaker with Definimax woofer

In the response curve above, you'll notice the baffle influence on directivity starting around 200Hz. This is the upper range of helper woofers, and augmentation using flanking subs is my preferred method of dealing with that. You'll also see the EBS in the octave from 50Hz to 100Hz. Flanking subs will help provide extension in this range too.
There is usable response very deep from this speaker, so it provides a good deal of energy for blending with helper woofer / subs to provide modal smoothing. Or in cases where it is used without subs, it has enough low frequency output that the deepest notes are definitely heard. But again, while the speaker sounds pretty good without flanking subs, I think it definitely sounds better with them.

Re: PSD2013 [message #78348 is a reply to message #77806] Tue, 12 November 2013 16:23 Go to previous messageGo to next message
tubemax is currently offline  tubemax
Messages: 37
Registered: February 2012
Location: Netherlands
Baron
Hi Wayne,

Thanks, great info!
Just to clarify, this is measured in free space or actual room response?
Re: PSD2013 [message #78349 is a reply to message #78348] Tue, 12 November 2013 17:18 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18783
Registered: January 2001
Illuminati (33rd Degree)

That measurement was made outdoors.

Re: PSD2013 [message #78352 is a reply to message #78349] Tue, 12 November 2013 19:57 Go to previous messageGo to next message
Bill Epstein is currently offline  Bill Epstein
Messages: 1088
Registered: May 2009
Location: Smoky Mts. USA
Illuminati (2nd Degree)
Can I take a look at the 3 Pi Plans, please?
Re: PSD2013 [message #78353 is a reply to message #78349] Tue, 12 November 2013 20:18 Go to previous messageGo to next message
Bill Epstein is currently offline  Bill Epstein
Messages: 1088
Registered: May 2009
Location: Smoky Mts. USA
Illuminati (2nd Degree)
Just had a look at the Definimax in my abandoned (well, I feed the cat up on top of them Very Happy ) 3 Cu Ft Utah 12" boxes from last year.

index.php?t=getfile&id=1342&private=0

That's with adding a 4" port 6" deep, tuned to 35.47 Hz; an hours work. Hmmm.
  • Attachment: 3Pi Clone.bmp
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Re: PSD2013 [message #78360 is a reply to message #78353] Tue, 12 November 2013 22:45 Go to previous message
Wayne Parham is currently offline  Wayne Parham
Messages: 18783
Registered: January 2001
Illuminati (33rd Degree)

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