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Multi-Way Conventional loudspeakers with crossovers

Are you (open) baffled yet?
Are you (open) baffled yet?
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Old 7th September 2003, 06:30 PM   #11
Rudolf is offline Rudolf  Germany
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Default Listening impressions and positioning

Wow, I didnīt realize you had them already "burnt in".

Can you tell us some more about their imaging qualities? Your baffles are quite close to the corners - my own selfmade OBs would require much more distance to the front wall for optimum sound quality. Have you played with other positions in the room? And how wide is the area for pinpoint imaging in your listening position?

As you will already have noticed, Iīm really eager to know more about the Prometheus. Thanks for your patience in advance.

Rudolf
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Old 7th September 2003, 06:54 PM   #12
Stew320 is offline Stew320  Shetland Islands
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Wow, those look nice!! The solid wood board looks the part.

Thats one hellava nice system you got there

Stew.
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Old 7th September 2003, 10:44 PM   #13
ThorstenL is offline ThorstenL  Germany
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Konnichiwa,

Quote:
Originally posted by Peter Daniel
What's the approx crossover point to the tweeter?
The tweeter rund with around 13KHz -3db point, but it has a slightly falling response between 10KHz & 20KHz so will likely be a little lower acoustically.


Quote:
Originally posted by Stew320
Wow, those look nice!! The solid wood board looks the part.

Thats one hellava nice system you got there

Stew.
Thanks, on both counts. The boards are from Ikea for < $ 40 each....

Sayonara
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Old 7th September 2003, 10:52 PM   #14
JoeBob is offline JoeBob  Canada
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I use solid birch for my open baffles, I find solid wood with a stain is perfect for OBs, you get a beautiful front as well as interior. Nice job again Kuei.
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Old 7th September 2003, 10:57 PM   #15
Bricolo is offline Bricolo  France
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I hope it's a bottle of french wine, on the last picture
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Old 7th September 2003, 11:10 PM   #16
Romy is offline Romy  United States
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Kuei Yang Wang,

I have found a pair of the drivers that I have been searching for a long time with attempt to build something similar that you did. (Although I never thought that in order to be really baffled the divers could sit in so small enclosure) I am kind of horns guy and know a little about the open baffles, however the certain uniqueness of my prospective open baffle projects and my love to the way in witch the open baffles sound force me to be interesting. So are any Web sources that you might suggest with the calculation of the open baffles?

Thanks,
Romy the Cat
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Old 7th September 2003, 11:19 PM   #17
fdegrove is offline fdegrove  Europe
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Hi,

Quote:
I hope it's a bottle of french wine, on the last picture
Le vin est un Chateau Bricolo d'un excellent millesime..j'ose esperer.

On a more serious note, alot of credit should go to Steen Doessing of SD acoustics for bringing both OB design and bi/tri wiring back to our attention.

I've owned a pair of OBS2 by SD Acoustics and would like to point to the importance of proper baffle design.

The baffle should be made asymmetrical IMO to reduce IMD.
Steen designed an OBS threeway which I can recommend to anyone.
It comprises a bass-reflex rear firing port woofer, the OBS midrange and a ribbon tweeter by Visaton.

A very good speaker indeed...room placement is as critical as it would be for any other dipole.

Some really nice stuff you have there, TL.

Cheers,
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Old 8th September 2003, 11:53 AM   #18
fdegrove is offline fdegrove  Europe
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Hi,

Quote:
So are any Web sources that you might suggest with the calculation of the open baffles?
Here's one I particularly like:

PHY

Cheers,
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Old 8th September 2003, 12:08 PM   #19
Romy is offline Romy  United States
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Thanks, Frank

Unfortunately I do not see there what I need. As I understand they just push their drivers and pre-caned enclosures for them. I do not particularly care about their drivers and consequencetualy about all their enclosure logic. All that I would need would be a simple calculation between the dimensions of the baffle and the desirable LF roll-off..

Rgs,
Romy the Cat
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Old 8th September 2003, 12:14 PM   #20
phase_accurate is offline phase_accurate
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Is that a Beauhorn in the background ? How does it compare to your open-baffles ?

Regards

Charles
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