Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Multi-Way Conventional loudspeakers with crossovers

The Ultimate Small Speaker, the Reference Mini Post Mortem Thread
The Ultimate Small Speaker, the Reference Mini Post Mortem Thread
The Ultimate Small Speaker, the Reference Mini Post Mortem Thread 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 11th November 2019, 11:00 PM   #21
bcodemz is offline bcodemz  Canada
diyAudio Member
 
Join Date: Feb 2014
The Reference Mini's at the burning amp this year, with a more bass boosted profile. Many people have inquired about the speaker and wanted to read more about it, so I'm bringing this thread alive.

Click the image to open in full size.
  Reply With Quote
Old 12th November 2019, 01:35 AM   #22
Brett is offline Brett
diyAudio Member
 
Brett's Avatar
 
Join Date: Jan 2002
I'm doing a speaker that's sort of similar, and used your project as part of the references in the design. Mine doesn't need to be portable, so may end up being larger though.

Would you still use the Scan mid, or something else in the newer build you mention?

Last edited by Brett; 12th November 2019 at 01:38 AM.
  Reply With Quote
Old 12th November 2019, 02:10 AM   #23
kec is offline kec  United States
diyAudio Member
 
kec's Avatar
 
Join Date: Mar 2001
Location: SoCal
bcodemz, your pictures are missing from your first post.
__________________
Former Altec Employee ('78-'82)
  Reply With Quote
Old 18th November 2019, 03:11 AM   #24
pliedtka is offline pliedtka  Canada
diyAudio Member
 
pliedtka's Avatar
 
Join Date: Jul 2008
Location: Ottawa
Hi Brian, can you post freq measurements. I recall they were very flat. And did you change things since the time you measured them at M. Kravczenko place, that was some 2 years ago.
I think Toid is all over your spkrs.
Would you change things if you were to make them again, say drivers placement on the baffle, or different drivers.
BTW, those underhunged alu 7" from Mark - very nice but to make 2way they need at least 1-1.5kHz x-o, or 3way your style, so we are kind on hold. I would like try them with Mark's big ribbon.
__________________
Pawel
  Reply With Quote
Old 18th November 2019, 06:42 AM   #25
bcodemz is offline bcodemz  Canada
diyAudio Member
 
Join Date: Feb 2014
Quote:
Originally Posted by kec View Post
bcodemz, your pictures are missing from your first post.
I just updated them!

Quote:
Originally Posted by pliedtka View Post
Hi Brian, can you post freq measurements. I recall they were very flat. And did you change things since the time you measured them at M. Kravczenko place, that was some 2 years ago.
I think Toid is all over your spkrs.
Would you change things if you were to make them again, say drivers placement on the baffle, or different drivers.
BTW, those underhunged alu 7" from Mark - very nice but to make 2way they need at least 1-1.5kHz x-o, or 3way your style, so we are kind on hold. I would like try them with Mark's big ribbon.
Here's an old measurement in 20 degree intervals. Click on the picture for a much bigger graph. Outdoor ground plane measurements <900Hz. Quasi anechoic with 10ms gating above that. No smoothing is used (or needed) on the measurements.

Click the image to open in full size.

A lot has changed over the 2 years I probably can't even count. Each of them make the speaker a little better, but the cumulative change makes a big difference.

I would change them completely if I were to do them again, almost every aspect of the design. I have a much better understanding of speaker design now, and there are so many little (and big) things that can be improved to the speaker.

Last edited by bcodemz; 18th November 2019 at 06:46 AM.
  Reply With Quote
Old 19th November 2019, 03:44 PM   #26
dublin78 is offline dublin78  United Kingdom
diyAudio Member
 
Join Date: Mar 2006
Location: Cheshire
Quote:
I would change them completely if I were to do them again, almost every aspect of the design. I have a much better understanding of speaker design now, and there are so many little (and big) things that can be improved to the speaker.
Would you care to share your ideas for changes?

I have enjoyed this thread, and the original.

I have been thinking of using your design for a fully portable (battery powered) mono Bluetooth system.

Mine would be simpler than your "ultimate" version. Bluetooth > MiniDSP > three or four channels of mono amplification > your same drivers (except non-beryllium version of tweeter)
__________________
Regards.
Michael
  Reply With Quote
Old 22nd November 2019, 04:13 AM   #27
pliedtka is offline pliedtka  Canada
diyAudio Member
 
pliedtka's Avatar
 
Join Date: Jul 2008
Location: Ottawa
Wow, that is stinking flat. For some reason I also prefer a little boost in 1-3k area, maybe because I use LR4 at 2k and it compensates for power response dip a little. Anyway, makes the vocal much nicer and easier to follow lyrics. I guess a lot depends on the drivers and x-o used. Devialet - that thing with two plastic subs on the sides and coax mid-tweeter - I wasn't really impressed by it, considering the amount of money they put into it for R&D, kind of like the Ottawa's LRT.
__________________
Pawel

Last edited by pliedtka; 22nd November 2019 at 04:29 AM.
  Reply With Quote

Reply


The Ultimate Small Speaker, the Reference Mini Post Mortem ThreadHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Pushing the limits of small speakers - The Reference Mini build thread bcodemz Multi-Way 150 9th October 2018 07:41 AM
The ultimate small speaker - final design feedback bcodemz Multi-Way 9 7th August 2016 06:16 AM
How would you design the ultimate small speaker? bcodemz Multi-Way 48 1st June 2016 12:44 AM
Most ultimate Bluetooth Speaker: Bose's small sized "Soundlink Mini" tiefbassuebertr Solid State 3 28th June 2015 05:54 PM
FS: Small/Mini Speaker Collection beaux1977 Swap Meet 3 5th June 2015 04:36 AM


New To Site? Need Help?

All times are GMT. The time now is 07:40 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki