Go Back   Home > Forums > >

Multi-Way Conventional loudspeakers with crossovers

Some speaker driver measurements...
Some speaker driver measurements...
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
Old 21st January 2021, 06:41 PM   #1161
454Casull is offline 454Casull  Canada
diyAudio Member
 
Join Date: Jan 2004
Location: Toronto, ON, Canada
Quote:
Originally Posted by Scholl68 View Post
While I agree that the SB17NBAC has a much better price/performance ratio, and is probably just as good in the mids as those Textreme Satori, I don't think they are going to be quite as good in the low-end, because of their motor and suspension.
But that's what we are talking about. When you take the low end out of the equation, there's no real reason to pick the Satori over the NAC/NBAC.
  Reply With Quote
Old 21st January 2021, 06:42 PM   #1162
Oneminde is offline Oneminde  Sweden
diyAudio Member
 
Oneminde's Avatar
 
Join Date: Jun 2014
Location: Darkside of the moon.
^^^^^
This one.
__________________
In order to become sane in an insane world, you must first become insane.
  Reply With Quote
Old 21st January 2021, 06:48 PM   #1163
Zvu is offline Zvu  Serbia
diyAudio Member
 
Zvu's Avatar
 
Join Date: Jan 2009
Location: Belgrade
I'd really like to see SB15CRC30-4 measurements.

That one could be the winner on multiple fields.
__________________
Tesla; George Carlin
  Reply With Quote
Old 21st January 2021, 06:51 PM   #1164
Scholl68 is online now Scholl68
diyAudio Member
 
Join Date: Mar 2018
Quote:
Originally Posted by 454Casull View Post
But that's what we are talking about. When you take the low end out of the equation, there's no real reason to pick the Satori over the NAC/NBAC.
I cannot be sure since I haven't listened to them, but probably true indeed, based on measurements.
  Reply With Quote
Old 21st January 2021, 10:56 PM   #1165
briskly is offline briskly  United States
diyAudio Member
 
Join Date: Jan 2013
Location: New York
Some of these SB Acoustics drivers have off-axis suckouts in the midrange that match up with the near field dips. What is that null coming from?
  Reply With Quote
Old 22nd January 2021, 12:29 AM   #1166
DcibeL is offline DcibeL  Canada
diyAudio Member
 
DcibeL's Avatar
 
Join Date: May 2003
Location: British Columbia
Like this one?
SB Acoustics SB17CRC35-4 | HiFiCompass

That dip at 1500Hz or so is usually a result of the half-roll surround, and it exists on-axis too. At some frequency the surround starts operating out of phase with the cone, causing some cancellation. The surround construction here has a lot to do with it, it's common in many speakers, not just SB. The wavy pro-style surround help here, or something extra crazy like what Purifi does or some Fostex models had complex surround construction to combat the effect.

The good news is that the dip is short band, and won't offended since it's a dip rather than a peak. People usually aren't put off by what they don't hear.
__________________
I'm not deaf, I'm just not listening.

Last edited by DcibeL; 22nd January 2021 at 12:36 AM.
  Reply With Quote
Old 22nd January 2021, 01:36 AM   #1167
briskly is offline briskly  United States
diyAudio Member
 
Join Date: Jan 2013
Location: New York
I did think it would be the surround/edge resonance almost immediately after posting, but the more important part I forgot to put in would be how to address the edge resonance. Cone reinforcement or injecting the surround with damping material?
And yes it is common, but the SB units are otherwise more well-behaved than most others in the midband that it stands out.
In any case, the off-axis dip limits convenient x-over transition wrt directivity. In that case, the Textreme behaves too much like the NAC cone as measured instead of the datasheet, which seemed a little poorly fit as a midrange driver.
  Reply With Quote
Old 22nd January 2021, 05:40 AM   #1168
YSDR is offline YSDR  Hungary
diyAudio Member
 
Join Date: Nov 2013
The dip between 1-2 kHz is not the surround, it's a cone (edge?) flexing resonance of the soft cone, the hard cones doesn't have this behavior. Easy to see with comparison, just check the alu vs paper from the same driver family, everything is the same except the cone, hard vs soft, same as with SEAS (alu vs paper) drivers.

Last edited by YSDR; 22nd January 2021 at 05:48 AM.
  Reply With Quote
Old 22nd January 2021, 11:41 AM   #1169
Martigane is online now Martigane  Belgium
diyAudio Member
 
Join Date: Apr 2018
Location: Belgium
Yes, in my view, this 1.2k dip is a compound of edge resonance that affects not-so- rigid cones.

The suck-out in directivity aspect is interesting, i think it comes down to cone geommetry and dust cap.
__________________
Blog --- Objective and Subjective measurements/benchmarks; DIY builds, experimentations.
  Reply With Quote
Old 22nd January 2021, 12:27 PM   #1170
tktran303 is offline tktran303  Australia
diyAudio Member
 
Join Date: Dec 2005
Location: Perth, WA
Thanks for the review Yevgeniy,

Looking forward to the MW19TX-4 review.
  Reply With Quote

Reply


Some speaker driver measurements...Hide this!Advertise here!
Thread Tools

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Driver distortion measurements? maggiesnmacs Multi-Way 10 14th May 2016 07:28 PM
MA driver measurements tuxedocivic Full Range 67 14th April 2014 12:55 AM
Comparing REW, ARTA and CLIO in speaker driver and acoustic measurements panson_hk Equipment & Tools 28 9th April 2014 09:40 AM
Driver measurements Legis Multi-Way 0 12th October 2010 07:08 PM
Mic distance for driver measurements ted4412wilt Software Tools 5 17th December 2009 09:35 PM


New To Site? Need Help?

All times are GMT. The time now is 04:15 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Copyright ©1999-2021 diyAudio
Wiki