Near full range BMR (Balanced Mode Radiator) - Page 10 - diyAudio
Go Back   Home > Forums > Loudspeakers > Full Range

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 22nd June 2012, 05:11 PM   #91
diyAudio Member
 
Join Date: Nov 2011
ro9397 HiWave BMR 3.5 inch round/square flange $60 now @ Parts Express.
I could not find anything on their website. The link only opens a pdf for the HIBM85C20-4/DD. I got one and measured it- see post #76. O.K. but not really impressed. I found that distortion increases a lot at the low end and I think one needs a crossover at more than 200Hz.
I email CSS before but never got any answer.
  Reply With Quote
Old 22nd June 2012, 11:04 PM   #92
ro9397 is offline ro9397  United States
diyAudio Member
 
Join Date: Jan 2007
Location: No. Utah
Here's the $61 Parts Express 3.5" BMR...PE currently lists 4 Ohm only but HW spec sheet mentions 16 Ohm also available.
__________________
James
"Television is the poor man's whiskey." Russel Baker
  Reply With Quote
Old 27th June 2012, 08:34 PM   #93
diyAudio Member
 
Join Date: May 2010
Quote:
Originally Posted by ro9397 View Post
Here's the $61 Parts Express 3.5" BMR...PE currently lists 4 Ohm only but HW spec sheet mentions 16 Ohm also available.

i bought 2 of these to mess with and one had 2 labels one scratched off other one had both labels intact the label under is catswald sound systems model number 8mr85dd-4in-001
  Reply With Quote
Old 28th June 2012, 06:57 AM   #94
diyAudio Member
 
Join Date: May 2010
Quote:
Originally Posted by Monteverdi View Post
I got one Hiwave HIBM85C20-4/DD and made some initial tests. Shown in a open baffle. Looks quite good for the price except the peak at 9 kHz (also high distortion). In a 3l box identical above 5khz but a -10dB notch at 3.5 kHz. I am wondering what is the optimal enclosure as some data are missing on the HiWave website.
nether of the 2 drivers i have have the peek @ 9k or the distortion this is 2 drivers in a .55L sealed enclosure.

but i do get the same sub 300 distortion which i measured @ 7-9% but when i cut that off 300-15k dropped to under 1% at about 90db

Last edited by momomo67890; 28th June 2012 at 07:07 AM.
  Reply With Quote
Old 13th November 2012, 03:53 PM   #95
diyAudio Member
 
Join Date: Jan 2010
Not sure if anyone is still interested in this thread, but thought I'd add an update of stockists of BMR

Parts Express now have the 3.5" round BMR (ferrite) in stock at a fairly reasonable €6.79
HiWave HIBM65C20F-8 3-1/2" BMR Full-Range Speaker 8 Ohm 297-2156

For fellow brits in the UK, RS Components now stock most of the Hi-wave range of exciters and smaller BMR. Most prices are comparable with the PE, but notably the above 3.5" model is the one that's a bit more pricey:
Buy hiwave online from RS Components
  Reply With Quote
Old 14th November 2012, 12:55 AM   #96
von Ah is offline von Ah  United States
diyAudio Member
 
von Ah's Avatar
 
Join Date: Feb 2008
Location: Maryland, USA
Thanks for the heads up! That is indeed one weird looking beast. The massive roll surround... That "simulated" SPL and impedance graph is odd, too (maybe worthless without reference). Someone should listen to and measure these, providing better details...
  Reply With Quote
Old 14th November 2012, 09:52 AM   #97
diyAudio Member
 
mondogenerator's Avatar
 
Join Date: Sep 2009
Location: City Of Villans
Blog Entries: 1
oops. I just posted a thread about these BMR things...
__________________
Every new piece of knowledge pushes something else out of my brain - Homer.....................Simpson
  Reply With Quote
Old 14th November 2012, 02:58 PM   #98
diyAudio Member
 
Join Date: Feb 2002
Location: WI
Quote:
Originally Posted by von.ah View Post
Thanks for the heads up! That is indeed one weird looking beast. The massive roll surround... That "simulated" SPL and impedance graph is odd, too (maybe worthless without reference). Someone should listen to and measure these, providing better details...
I actually have these coming, they should be here today
__________________
True Creation Comes Out Of Nothingness
  Reply With Quote
Old 14th November 2012, 04:25 PM   #99
diyAudio Member
 
mondogenerator's Avatar
 
Join Date: Sep 2009
Location: City Of Villans
Blog Entries: 1
Im interested in the oblong driver, which appears to be dual motor. Has anyone any data for them? Im having trouble finding anything.
__________________
Every new piece of knowledge pushes something else out of my brain - Homer.....................Simpson
  Reply With Quote
Old 14th November 2012, 05:14 PM   #100
diyAudio Member
 
Join Date: Feb 2002
Location: WI
Quote:
Originally Posted by von.ah View Post
Thanks for the heads up! That is indeed one weird looking beast. The massive roll surround... That "simulated" SPL and impedance graph is odd, too (maybe worthless without reference). Someone should listen to and measure these, providing better details...
I actually have these coming, they should be here today
__________________
True Creation Comes Out Of Nothingness
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Korean Sonodyne S-654 Full-Range/Wide-Range Drivers thetubeguy1954 Full Range 6 18th January 2011 10:42 PM
full range+ passive radiator sintacto Full Range 9 15th May 2008 08:09 PM
Frequency range of the human voice & full range center channel speakers jwmbro Multi-Way 31 20th January 2008 03:07 PM


New To Site? Need Help?

All times are GMT. The time now is 03:49 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2