High Efficiency Speaker Asylum

RE: I would love to hear more about the BMS mod!

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DHT 4 ME

In Reply to: RE: I would love to hear more about the BMS mod! posted by PK on June 14, 2007 at 23:15:27

Ok. the best way to understand the mod is to remove the tweeter. That is very easy to do and you will see the recess that BMS machines into the housing to clear the solder joint for the tweeter leadouts. The problem is that it goes clear through into the compression chamber for the mid.
I used a stainless disk that fit in the recess and epoxied it in. Then place 2 sheets of heavy paper over the disk to insulate it. I also tapped the solder on the tweeter leadouts down so it will not protrude into the paper insulator. It removes a nasal peak in the response and it sounds smoother overall. Look for pics over the weekend.
Bob

Follow Ups:

RE: I would love to hear more about the BMS mod! - PK 01:27:07 06/15/07 (3)
Hi Bob,

Thanks a lot for your reply! I really appreciate it.

I have some questions, that I hope you will respond to, but I think I will wait until I see the pictures, because they may answer some of them. I have strugled with these driver for quite a while now and would really like to get the best out of them!

Thanks!

All the best
Peter
- Bert will be not so amused, hehe...... - angeloitacare 09:59:07 06/15/07 (2)
  anyway, i will soon try out the radian 950 pb, just curious to see witch will perform better.
  - RE: Bert will be not so amused, hehe...... - DHT 4 ME 20:01:32 06/15/07 (1)
    Yeah like he has a monopoly on modded BMS drivers. I can see why the rave reviews have poured in on his Orphean system. The persons who have heard these horns I have here are simply amazed how instruments seem to just appear from nowhere right in front of you. I have heard horns that seem to project the instruments but these just seem to just happen as if it was there. It is kinda tough to describe. Honestly I am puzzled that a German company would release a product that had such a flaw. My Mercedes seemed to be so over engineered that it was rediculous. Mabye that is why they have that unit that is above the 4592.
    - RE: Bert will be not so amused, hehe...... - angeloitacare 03:06:07 06/16/07 (0)
      i would use the 4592, ore eventually the 4591 only as mid frequency driver up to ~ 5 - 6khz, and a separate tweeter as Peter is doing. should give better results.

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