BMS 4550 or B&C DE250 - diyAudio
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Old 15th February 2014, 11:58 PM   #1
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Default BMS 4550 or B&C DE250

I just received my SEOS10 wave guides that I got really cheap by going in on the group buy. The quality is just awesome.

I need to buy compression drivers and want either the BMS 4550 or B&C DE250. The cost is irrelevant to me and I want the one that has better sound quality in a loud music system that is also used for home theater. They cant be wide so I went with the 10" WG to couple to two FaitalPRO 8PR200 8" drivers in a TMM at around 1400hz. The system has a ton of EQ so I dont care which is flatter. Its also an active system so experimenting with crossover is easy.

FaitalPRO 8PR200 8" Neodymium Professional Woofer 16 Ohm | 294-1176

I know the BMS is a tank and handles power, play efficiently, and crosses lower than I need. I prefer this driver but I have read that it has a big peak high in freq that annoys some. Is this an issue? While I can flatten the response, a big peak up there may be the result of something that EQ alone doesn't fix.

I know Geddes prefers and uses the DE250. His vote carries weight with me. I am not however running a speaker company needing to constantly buy drivers so cost and availability arent a concern. If all else is similar, I'm leaning toward the BMS.

Thank in advance for your input.

Last edited by SpinMonster; 16th February 2014 at 12:00 AM.
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Old 17th February 2014, 02:54 AM   #2
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OK, does anyone have any direct info on distortion or LF extension differences. I can't find much by searching. It seems the 4550's increased efficiency would result in more spl with the same power so I guess that would mean it has more headroom.

Transients are important to me.
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Old 17th February 2014, 07:50 AM   #3
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Whats the record for the most number of views without a comment?
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Old 17th February 2014, 08:08 AM   #4
tinitus is offline tinitus  Europe
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don't know, but have you noticed Faital's new 1" drivers with very low Fs, and smooth impedance ?

maybe HF103 or HF109
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Old 17th February 2014, 08:51 AM   #5
Hylle is online now Hylle  Denmark
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I have the old version of DE250, the B&C DE25 I fell it sounds harsh around 7 KHz on female voises, violins and horns. I would probably go for a Radian, 18 sound or a Faital driver next time.
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Old 17th February 2014, 01:54 PM   #6
JLH is offline JLH  United States
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If not the BMS 4550, I think the Faital HF10AK deserves a serious look. I've had mixed results with B&C's compression drivers.
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Old 17th February 2014, 02:11 PM   #7
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Hi Spinmonster, the BC DE250 has a very flat frequency response, which is irrelevant for you. There is a slightly modified DE250TN, I haven't seen what the difference is, apart from higher SPL. They have several powerful 1.4" CD but will they fit ? BC seems to be better built than BMS, from what I see.
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Old 17th February 2014, 02:23 PM   #8
tinitus is offline tinitus  Europe
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Quote:
Originally Posted by Chano View Post
BC seems to be better built than BMS, from what I see.
how ?
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Old 17th February 2014, 03:46 PM   #9
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Default Hi tinitus

Please ask someone who uses BMS. I can only confirm that the drivers from BC that I am using are very well manufactured. I am not an engineer. You can disassemble the mentioned drivers and examine them at leisure. I also consider the weight and the price, but the only way to know for sure is to mount both and to measure their acoustic response. Looking forward, if you like to do it.
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Old 17th February 2014, 04:03 PM   #10
tinitus is offline tinitus  Europe
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handsome finish might be a very a good indicator of a carefully designed driver
but there may be more to it than that
I suppose it would be possible to design the worlds best driver out of plastic, if you put enough effort into it
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