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

Ultimate Open Baffle Gallery
Ultimate Open Baffle Gallery
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 23rd December 2018, 01:30 AM   #2581
ttan98 is offline ttan98  Australia
diyAudio Member
 
Join Date: Apr 2006
Location: Melb
Quote:
Originally Posted by Quakeos View Post
These are my early stages of messing around with dipoles...

These don't make sense and break the rules on paper.. full range 6 inch hard al cone driver, baffleless, I would imagine a very messy CSD plot...

however, because DSP is amazing I can get this speaker +-3db on axis from its xover point to 16khz. (not that this fixes resonance issues or anything..)

HOWEVER,

listening tests - my golly gosh! the most extraordinary, stunning clarity I have heard from anything -period. Not a trace of a muddy sound, sharp stereo imaging, very dynamic, super musical and a sound stage you get awed by when putting on a good recording. Very nonfatiguing - and I can see these rigid cones really pick up a lot of microdetails. I can hear some resonance issues in the mid-high treble range which would also show itself on a CSD plot.

For now just very temperamental - a very happy man with some cool stuff planned.

Attached - my little system, distortion graph of this amazing drivers and the original , unequalised response.

I can't see any tweeter from this setup?
  Reply With Quote
Old 25th December 2018, 08:33 AM   #2582
carlthess40 is offline carlthess40  United States
diyAudio Member
 
Join Date: Oct 2017
Location: Lake Mary Florida
I e started this build from a set of 2way German made car speakers. Specs are 30hz to 20,000. I just made the stands to burn them in and see how they sound. Any ideas on what I can do to make them get the best sound out of them? I have not hooked them up yet and I do have a dsp unit I can hook up to them to mess with the response of them
Any way. Here’s some pics. Just be easy on my. First try at OB speakers and just wanted to use what I have laying around
They are on a stand that has them leaning back just a very small amount. Just enough to keep them standing up and not falling over. And I just used what ever wood I had laying around
IMG_3014.jpgIMG_3027.jpgIMG_3019.jpgIMG_3015.jpg
  Reply With Quote
Old 28th December 2018, 07:30 AM   #2583
Kjeldsen is offline Kjeldsen  Denmark
diyAudio Member
 
Join Date: Dec 2003
Location: Randers, Denmark
I think you should make a build thread, if you want advice. This is just a thread for showing of finished speakers
__________________
http://kjeldsensforbindelser.dk
  Reply With Quote
Old 30th December 2018, 01:24 AM   #2584
Wikkid is offline Wikkid  United States
diyAudio Member
 
Wikkid's Avatar
 
Join Date: Apr 2005
Location: South Florida
Quote:
Originally Posted by carlthess40 View Post
What specs do I look for on mids and woofers for OB setup?
*IMO* The best approach is this:
Start with a full-range you love and could almost live with all by itself...
(don't "cheap-out" here)
Then, add woofer and tweeter.

Probably, you'll soon want more bottom end and top end.
The "full range" will really be a "wide-range", and used essentially as a mid.
Next, find a woofer and tweeter of similar sensitivity... (the closer the better!)

With this approach, you wind up with a "full/wide/mid" that yields most of the music...
Just adding augmentation at top and bottom...
Keeps crossovers/filters out of the "vocal range"... the range where most of the music is.

The woofer specs are:
BIG!
High(ish) Q
High sensivity is "helpful to the cause"..
No box to yeild deep base... that's what the big and high-q are for...
Sensitive because an "insensitive" woofer will struggle to produce the large excursion needed with no box, and which is inevitable with no box to offer resistance.
Think "lots o' watts"..
Hard to find hi-q woofers that are inefficient anyway.
Low FS is always nice....

Tweeter will likely need some sort of lens or wave guide...
(unless it's "built-in"... or on)..
I happen to prefer ribbons....
But others prefer other things..

The crossover will be the fun part....
  Reply With Quote
Old 30th December 2018, 05:34 AM   #2585
gazzagazza is offline gazzagazza  New Zealand
diyAudio Member
 
Join Date: Jun 2004
Location: NZ
The woofer needs to be up to 10db more efficient than your widerange speaker. That's because you will throw away a lot of that efficiency to get the extension. This is if you're going passive. If you're going active then efficiency matching doesn't matter at all.
  Reply With Quote
Old 30th December 2018, 05:49 AM   #2586
Wikkid is offline Wikkid  United States
diyAudio Member
 
Wikkid's Avatar
 
Join Date: Apr 2005
Location: South Florida
Great point...

Assuming you want flat response throughout the range..
Most do, I realize..

Also... In most cases.... the widerange usually has a much greater impedance peak than does the woofer...
Negating somewhat, the difference..
  Reply With Quote
Old 31st December 2018, 08:46 PM   #2587
MITsound is offline MITsound  Canada
diyAudio Member
 
MITsound's Avatar
 
Join Date: Jul 2013
Location: Burnaby
Ultimate Open Baffle Gallery
Quote:
Originally Posted by gazzagazza View Post
The woofer needs to be up to 10db more efficient than your widerange speaker. That's because you will throw away a lot of that efficiency to get the extension. This is if you're going passive. If you're going active then efficiency matching doesn't matter at all.

More efficient seems more "alive" some how. My triple stack per channel 15" woofers are each rated at 6db more efficient than each of the two planar midranges I use. With 15 times the available power driving the woofers, than the mids, they are much happier than with 15 class A watts available to them, despite their 98/97db efficiency rating. Surprisingly, the bass is more improved than the rest of the spectrum, when flooded with 2nd harmonic distortion from an inexpensive tube linestage.
I tried 4 RSS265HF-04 10" drivers, in Linkwitz-like bass bins, but they can't keep up with the planars.
Destined for deep deep bass, in a cinema sealed box, I guess.
__________________
"Aim above morality. Be not simply good; be good for something." HD Thoreau

Last edited by MITsound; 31st December 2018 at 08:49 PM.
  Reply With Quote
Old 13th January 2019, 05:06 AM   #2588
tru168 is offline tru168
diyAudio Member
 
Join Date: Apr 2016
Hi all , here's my humble design with slot loaded full range.

YouTube
  Reply With Quote
Old 13th January 2019, 02:57 PM   #2589
Godzilla is offline Godzilla  United States
diyAudio Member
 
Godzilla's Avatar
 
Join Date: Nov 2005
Location: New York
They look great tru168!
  Reply With Quote
Old 13th January 2019, 03:05 PM   #2590
tru168 is offline tru168
diyAudio Member
 
Join Date: Apr 2016
Quote:
Originally Posted by Godzilla View Post
They look great tru168!
Thank you . !
  Reply With Quote

Reply


Ultimate Open Baffle GalleryHide 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
Open baffle or no baffle for nearfield full range monitors? mdevelde Full Range 19 18th November 2016 05:26 PM
Ultimate Open baffle for tannoy red 15 inch murphythecat8 Full Range 20 30th January 2013 01:29 AM
Upwards aligned open baffle? ( pop box meets open baffle ) OllBoll Full Range 3 28th March 2011 02:00 AM


New To Site? Need Help?

All times are GMT. The time now is 09:11 AM.


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