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Multi-Way Conventional loudspeakers with crossovers

Horn Lens for BMS 4594HE
Horn Lens for BMS 4594HE
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Old 8th May 2019, 03:57 AM   #1
rotgg is offline rotgg  United States
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Join Date: Apr 2004
Location: al
Default Horn Lens for BMS 4594HE

Hello I am looking for a horn lens for a BMS 4594HE. I would like to cross the BMS driver as low as possible. I found these
K-Horn K-HORN - Horns by Auto-Tech
iwata-200 IWATA-200 - Horns by Auto-Tech
seos-24 SEOS-24 - Horns by Auto-Tech
seos-30 SEOS-30 - Horns by Auto-Tech

Is one of those designs better than the others.

This will be in a music studio for mains with TD18H+ in MTM type config

Room will be about 28x25
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Old 8th May 2019, 04:17 PM   #2
ErnieM is offline ErnieM  United States
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Location: Fresno, CA
Seos 30 will probably have the best polars. The BMS might show some strain at high volume with a 400hz crossover. Might be fine for your needs.

Quite a few people have had good success with that driver in the smaller seos 24.

Last edited by ErnieM; 8th May 2019 at 04:20 PM.
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Old 8th May 2019, 04:29 PM   #3
1hiep0 is offline 1hiep0  United States
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Join Date: Dec 2013
Location: San Diego
Quote:
Originally Posted by rotgg View Post
Hello I am looking for a horn lens for a BMS 4594HE. I would like to cross the BMS driver as low as possible. I found these
K-Horn K-HORN - Horns by Auto-Tech
iwata-200 IWATA-200 - Horns by Auto-Tech
seos-24 SEOS-24 - Horns by Auto-Tech
seos-30 SEOS-30 - Horns by Auto-Tech

Is one of those designs better than the others.

This will be in a music studio for mains with TD18H+ in MTM type config

Room will be about 28x25
Peter Morris at Soundforums.net had used these horns successfully in MTM configuration.
RCF HF950 -90 degree
Eighteen Sound XT1464 -60 degree
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Old 8th May 2019, 05:09 PM   #4
jzagaja is offline jzagaja  Poland
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Join Date: Jun 2004
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Horn Lens for BMS 4594HE
Or this. Has smoothest polar.
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Old 8th May 2019, 09:45 PM   #5
rotgg is offline rotgg  United States
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Join Date: Apr 2004
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Quote:
Originally Posted by ErnieM View Post
Seos 30 will probably have the best polars. The BMS might show some strain at high volume with a 400hz crossover. Might be fine for your needs.

Quite a few people have had good success with that driver in the smaller seos 24.
They will need to hit very high vol. I talked with the seller of the BMS and they said it could be crossed as low as 300hz and will play down to 200hz with ease. So I thought if we crossed at 400hz we would be fine. I was looking at the smaller seos also but it says it only good down to 550hz. There is a build here where they used the seos 24 at 450hz SEOS-24, BMS 4594ND, Dual AE TD18H+ - AVS Forum | Home Theater Discussions And Reviews

The seller also told me the k-horn he thought would be better than the seos. He was saying something about how short the seos was is why it would not work as well.

And thanks for your replies
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Old 8th May 2019, 09:50 PM   #6
rotgg is offline rotgg  United States
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Quote:
Originally Posted by jzagaja View Post
Or this. Has smoothest polar.
that looks great but what is it
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Old 8th May 2019, 09:52 PM   #7
rotgg is offline rotgg  United States
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Join Date: Apr 2004
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Quote:
Originally Posted by 1hiep0 View Post
Peter Morris at Soundforums.net had used these horns successfully in MTM configuration.
RCF HF950 -90 degree
Eighteen Sound XT1464 -60 degree
I was looking at the RCF HF950 but didnt like that it is two piece
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Old 8th May 2019, 11:03 PM   #8
ErnieM is offline ErnieM  United States
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Join Date: Dec 2009
Location: Fresno, CA
Quote:
Originally Posted by rotgg;5784918[/url

The seller also told me the k-horn he thought would be better than the seos. He was saying something about how short the seos was is why it would not work as well.
For high level use that will probably be a safer choice. Although it will have more beaming in the highs. Might not be a big issue in practice.
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Old 9th May 2019, 01:14 AM   #9
rotgg is offline rotgg  United States
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Quote:
Originally Posted by ErnieM View Post
For high level use that will probably be a safer choice. Although it will have more beaming in the highs. Might not be a big issue in practice.
That K-Horn is similar to the type that JTR uses in there speakers. JTR i think is custom horn. We need it to be no easy to blow as these get abused. They are in a non private studio that will be rented to the public and we often have customers that think that the louder the better
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Old 9th May 2019, 01:32 AM   #10
ErnieM is offline ErnieM  United States
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Join Date: Dec 2009
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Make sure you set your limiters fairly conservatively. Don't want to read about fried drivers in a few months! While the AE drivers are second to none in audio performance, they aren't designed for the abuse that pro audio gear goes through.

Most people associate distortion with loudness. These drivers might fail before that threshold is reached for select individuals.

Last edited by ErnieM; 9th May 2019 at 01:40 AM.
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