The Unvailing of the ???? at the CES - Page 2

planet10 · 10th January 2003, 08:41 AM

Quote:

Originally posted by GRollins
The 11" will fill up to, let's say... 250Hz?

18" puts the baffle step -3dB at a nominal 253 Hz. An ideal place to put the XO.

dave

roddyama · 10th January 2003, 08:57 AM

The mids are 5", not 6". The lit give an 8kHz xover for the tweeter, but nothing on the xover points. The bass AX is 80Watts, not 40Watts. The front (baffle), top, and bottom are granite. The sides are made with piano building techniques (Layers of laminates vacuum formed).

I would expect the lit to be on the forum very soon.

Rodd Yamashita

russbryant · 10th January 2003, 02:17 PM

Hey Kent,

Is that the 11" Eaton driver?
We need more pics. Closeups.

Russ

GRollins · 10th January 2003, 02:23 PM

Regarding that 15"...after resting on it, I'll say that a Q-bump on the low end could do the job without further EQ.
Interesting about the bottom amp being 80W. That means it can run off the same power supply as the 20W amps for the other drivers. Roughly 20V rails, assuming that the drivers are nominal 8 ohms. Now we're down to one power supply with a 300VA transformer. Nice and tidy.
8kHz for the tweeter doesn't bother me, but it's a bit of a stretch for a 5" in terms of dispersion.

Grey

Peter Daniel · 10th January 2003, 02:32 PM

Unfortunately Ravens need that high crossover. I'm running mine at 7kHz third order and from time to time the aluminum element just melts (but only when playing industrial music

).

BrianGT · 10th January 2003, 03:59 PM

Quote:

Originally posted by russbryant
Hey Kent,

Is that the 11" Eaton driver?
We need more pics. Closeups.

Looks like it could be the Eton 11-581

--
Brian

roddyama · 10th January 2003, 04:01 PM

Peter,

The lit says:

"For best transient and phase response, the mid-bass and mid-range bandpass filters are single-pole types, while the bass driver sees a 2 pole low pass filter (?) at 22Hz and the ribbon tweeter is crossed with 2 poles at 8kHz."

Gray,

The plate amp is one single 4ft tall heat sink. Kent says that it gets too hot at the top and may have re-distribute the devices.

Russ,

I don't know if Kent want this out. He really didn't say it was a secret. All the cone drivers are PSL drivers. I will ask him about the 11" again today because I'm interested in that one myself.

File transfer over hotel phone lines are a real PITA, and not cheap. I will get some photos transfered, but the bulk will come when I get back home on Sunday.

Rodd Yamashita

vuki · 10th January 2003, 04:59 PM

Considering Pass' taste and loudspeaker's look I'm almost sure that these are PHL drivers.

roddyama · 10th January 2003, 05:19 PM

Vuki,

You may very well be right. I may have misunderstood Kent. I verify that today.

Rodd Yamashita

russbryant · 10th January 2003, 05:35 PM

PHL drivers don't have round frames and don't come in 11" sizes. Could be a custom PHL for Pass Labs though.

PSL is Phillips Sound Labs and if Kent said PSL then that's probably what they are. Still probably custom versions of thier commercial driver.

I'll keep looking around. So far I can't find any pics of PSL drivers.

I'll post a link in a few minutes if I find one.

Russ

10th January 2003, 02:32 PM	#15
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	Unfortunately Ravens need that high crossover. I'm running mine at 7kHz third order and from time to time the aluminum element just melts (but only when playing industrial music ). __________________ www.audiosector.com “Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

10th January 2003, 05:35 PM	#20
russbryant diyAudio Member Join Date: Oct 2002 Location: Tucson, AZ	They don't look like PHL PHL drivers don't have round frames and don't come in 11" sizes. Could be a custom PHL for Pass Labs though. PSL is Phillips Sound Labs and if Kent said PSL then that's probably what they are. Still probably custom versions of thier commercial driver. I'll keep looking around. So far I can't find any pics of PSL drivers. I'll post a link in a few minutes if I find one. Russ

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10th January 2003, 08:57 AM	#12
roddyama diyAudio Moderator Emeritus Join Date: Jan 2002 Location: Michigan	The mids are 5", not 6". The lit give an 8kHz xover for the tweeter, but nothing on the xover points. The bass AX is 80Watts, not 40Watts. The front (baffle), top, and bottom are granite. The sides are made with piano building techniques (Layers of laminates vacuum formed). I would expect the lit to be on the forum very soon. Rodd Yamashita

10th January 2003, 02:17 PM	#13
russbryant diyAudio Member Join Date: Oct 2002 Location: Tucson, AZ	Hey Kent, Is that the 11" Eaton driver? We need more pics. Closeups. Russ

10th January 2003, 02:23 PM	#14
GRollins diyAudio Member Join Date: Feb 2001 Location: Columbia, SC	Regarding that 15"...after resting on it, I'll say that a Q-bump on the low end could do the job without further EQ. Interesting about the bottom amp being 80W. That means it can run off the same power supply as the 20W amps for the other drivers. Roughly 20V rails, assuming that the drivers are nominal 8 ohms. Now we're down to one power supply with a 300VA transformer. Nice and tidy. 8kHz for the tweeter doesn't bother me, but it's a bit of a stretch for a 5" in terms of dispersion. Grey

10th January 2003, 04:01 PM	#17
roddyama diyAudio Moderator Emeritus Join Date: Jan 2002 Location: Michigan	Peter, The lit says: "For best transient and phase response, the mid-bass and mid-range bandpass filters are single-pole types, while the bass driver sees a 2 pole low pass filter (?) at 22Hz and the ribbon tweeter is crossed with 2 poles at 8kHz." Gray, The plate amp is one single 4ft tall heat sink. Kent says that it gets too hot at the top and may have re-distribute the devices. Russ, I don't know if Kent want this out. He really didn't say it was a secret. All the cone drivers are PSL drivers. I will ask him about the 11" again today because I'm interested in that one myself. File transfer over hotel phone lines are a real PITA, and not cheap. I will get some photos transfered, but the bulk will come when I get back home on Sunday. Rodd Yamashita

10th January 2003, 04:59 PM	#18
vuki diyAudio Member Join Date: Jun 2002 Location: zagreb, croatia	Considering Pass' taste and loudspeaker's look I'm almost sure that these are PHL drivers.

10th January 2003, 05:19 PM	#19
roddyama diyAudio Moderator Emeritus Join Date: Jan 2002 Location: Michigan	Vuki, You may very well be right. I may have misunderstood Kent. I verify that today. Rodd Yamashita