U-frame line array subs with BMS's woofers

Legis · 13th June 2010, 03:57 PM

Hi,

I'm planning to build a u-frame line array subs consisting of 4x 18 inch woofers per side.

I have been looking at BMS's woofers:

18N860: http://bmsspeakers.com/fileadmin/bms...2010-03-18.pdf

18S430v2: http://bmsspeakers.com/fileadmin/bms...0v2_t_data.pdf

Woofers are advertised to have a low distortion, and from the pictures their motor seems to be vented properly which could indicate that the motor has a low operation noise.

Does anybody have some experience with these woofers?

chris661 · 14th June 2010, 08:26 AM

Nope, though for dipole use, many favour high Qts drivers (around 1, maybe a little higher).

Perhaps it'd be worth searching for something that fits the bill better.

Legis · 14th June 2010, 08:47 AM

I intend to use a DCX2496 to equalize the room response (= mainly boost low freqs), high q-value is therefore useless, and it's only an indicator for a sloppy motor system with weak magnet.

I will also continue my project at some point and will monopolize or make a cardioid out of some of those woofers, this kind of planned versatility also calls for "universal woofer".

By the way, the frames are ready:

My current apartment does not allow me to move the frames further from the front wall. Therefore I have to set the crossovers low and/or boost the lowest freqs quite a bit.

13th June 2010, 03:57 PM	#1
Legis diyAudio Member Join Date: Dec 2009 Location: -	U-frame line array subs with BMS's woofers Hi, I'm planning to build a u-frame line array subs consisting of 4x 18 inch woofers per side. I have been looking at BMS's woofers: 18N860: http://bmsspeakers.com/fileadmin/bms...2010-03-18.pdf 18S430v2: http://bmsspeakers.com/fileadmin/bms...0v2_t_data.pdf Woofers are advertised to have a low distortion, and from the pictures their motor seems to be vented properly which could indicate that the motor has a low operation noise. Does anybody have some experience with these woofers?

14th June 2010, 08:26 AM	#2
chris661 diyAudio Member Join Date: Feb 2008 Location: Lancashire Blog Entries: 7	Nope, though for dipole use, many favour high Qts drivers (around 1, maybe a little higher). Perhaps it'd be worth searching for something that fits the bill better. __________________ "Throwing parts at a failure is like throwing sponges at a rainstorm." - Enzo My setup: http://www.diyaudio.com/forums/multi...tang-band.html

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14th June 2010, 08:47 AM	#3
Legis diyAudio Member Join Date: Dec 2009 Location: -	I intend to use a DCX2496 to equalize the room response (= mainly boost low freqs), high q-value is therefore useless, and it's only an indicator for a sloppy motor system with weak magnet. I will also continue my project at some point and will monopolize or make a cardioid out of some of those woofers, this kind of planned versatility also calls for "universal woofer". By the way, the frames are ready: My current apartment does not allow me to move the frames further from the front wall. Therefore I have to set the crossovers low and/or boost the lowest freqs quite a bit.

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