Open Baffles at RMAF-07

[Pano]

Of the few very good systems I heard at RMAF-07, three were open baffle. (There were a lot of good systems, few were very good)

So here is a thread to discuss those 3 designs and learn from them for our own projects.

The 3 systems were:

Nelson Pass - Lowther
Tall mid size baffle
1 Lowther full range,
2x10" Seas woofers.
Active filtering.


Lyngdorf
The DP-1 .
Slim double curve baffle
6.5" Magnesium mid/woofer
Revelator tweeter. 10" Bass units against the wall.


Manzanita 12"
A friend who brought 2 OB systems just for fun.
The small system put 90% of the speakers at RMAF to shame (but not the 2 above).
2 way passive with
Peerless SLS 830669 - 12" Woofer
Vifa D27TG45 1" dome tweeter.
6 element Passive crossover.
About $200 per side, all drivers, parts and wood included!


I will try to assemble more details on these 2 systems. Please feel free to contribute. There is a lot to be learned from these 3 systems.

[Nelson Pass]

I saw a couple that might qualify:

The Bastanis, which are labeled as OB and have some
kind of grill cloth in the rear.

[Nelson Pass]

Also the Laufer Teknik, which look like baffles to me....

[Magnetar]

Hmmm. I was figuring somebody would show up with a pair of low compromise high efficiency dipoles. It's really not that difficult!

Was there any interesting full range, fully horn loaded systems?

[pedroskova]

I made the mistake of reading the Stereophile "blog" of the RMAF. I must say that I was embarrassed. There was nothing technical in the descriptions...only pricing that would make a subprime lender blush...and I thought that this industry had lost its collective mind ten years ago.

Boy, was I wrong.

Barnum said that there was a sucker born every minute; that was when the U.S. had ~80 million people. As we approach 300 million, I take it that Barnum's timeframe has shrunk somewhat.

[Pano]

Thanks Nelson.

I didn't get a chance to hear a lot of rooms, too busy in our own.

Do you want to include any of these in the "what can we learn from studying these designs" list?

[ashok]

Any pictures of the Manzanita 12" ?

[cph2000]

Did you miss the Emerald Physics CS2 on your list?

These guys claim that it was there:

http://www.audiocircle.com/circles/i...?topic=46315.0

[audiokinesis]

I also claim that the Emerald Physics CS2 was there. I'm one of their dealers, and visited the room they were in.

Duke

[Ang]

Does anyone know specifically which Eminence drivers were in the CS2?