BM D450 vs. SD 740N compression drivers
Printed From: Speakerplans.com
Category: Plans
Forum Name: X10, X12, X15 and XM15
Forum Description: Discussion / Questions about the X10, X12, X15 and XM15
URL: https://forum.speakerplans.com/forum_posts.asp?TID=10707
Printed Date: 27 March 2026 at 11:09am
Software Version: Web Wiz Forums 12.08 - https://www.webwizforums.com
Topic: BM D450 vs. SD 740N compression drivers
Posted By: davedrpop
Subject: BM D450 vs. SD 740N compression drivers
Date Posted: 03 July 2007 at 10:55pm
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G'day all I want to make a couple of XM15s - the plans for the X15 list a choice of drivers - BM D450 and SD 740N, whereas the XM15 plans list just the SD 740N. What I'm wondering is: The SD 740N is three times the price of the BM D450 - how much better is it? Is the BM D450 good enough for FOH? I'm down in Poole, Dorset - is there anyone down here who is using these drivers that I could drop in on to have a listen? any help appreciated  Dave |
Replies:
Posted By: Tekasis
Date Posted: 03 July 2007 at 11:53pm
Good question - From what I've gathered reading about these, I've always seen the Neo compression drivers costing more than the ferrite ones.
I don't really know if it's for the sound or the weight issue why some prefer them.
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davedrpop wrote:Posted By: ceharden
Date Posted: 04 July 2007 at 1:08am
| The big difference is that the BMD-450 is a 1.75" diaphragm on a 1" exit whereas the SD-740N is not only neo but also a 3" diaphram on a 1.4" exit. The 740 will go almost an octave lower than the 450 and handle more power. |
Posted By: Disco Stu
Date Posted: 04 July 2007 at 1:24am
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Nice dave I am in Bournemouth as is Markk James and Void/Pro Audio Parts are in Hamworthy - maybe you should pay them a visit, they may be able to give you a demo!
Stu ------------- All you need to know is: Sensitivity + Power Handling - Power Compression = Max Output My acts: www.myspace.com/thebowiexperience www.myspace.com/scheisseelektronisches |
Posted By: Tekasis
Date Posted: 04 July 2007 at 10:34am
Are the SD compression drivers just Neo versions of the BM-D range ?
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Posted By: Mircea Bartic
Date Posted: 04 July 2007 at 11:07am
absolutely no  ------------- general manager & head designer at nexus-acoustics research http://www.facebook.com/nexus.acoustics.research" rel="nofollow - http://www.facebook.com/nexus.acoustics.research Ex Nexus_3 |