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

Planars & Exotics ESL's, planars, and alternative technologies

Multiple stacked dipole bass
Multiple stacked dipole bass
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 26th August 2019, 06:44 AM   #21
Juhazi is offline Juhazi  Finland
diyAudio Member
 
Juhazi's Avatar
 
Join Date: Mar 2007
Location: Jyväskylä, Finland
Let's just let the boys play!
Finally, after learning to take measurements they will start to understand how tranducers work acoustically. No hamsters harmed!
__________________
Radikal aktivist AINOgradient speaker project
  Reply With Quote
Old 26th August 2019, 01:53 PM   #22
Davey is offline Davey  United States
diyAudio Member
 
Join Date: Dec 2001
Location: Bremerton, WA.
Quote:
Originally Posted by Juhazi View Post
Let's just let the boys play!
Finally, after learning to take measurements they will start to understand how tranducers work acoustically. No hamsters harmed!
Well, I'm not sure why taking measurements should be required.
Measurements would just confirm the basic physics.....which should be intuitive.

You place a woofer(s) in pretty much free air, you're not getting any bass.
No free lunch with this kind of thing.

Dave.
  Reply With Quote
Old 27th August 2019, 08:16 PM   #23
esl 63 is offline esl 63
diyAudio Member
 
Join Date: Aug 2010
Dealing with HiFi since late 70ties, i have finally reached the goal of bass-texture, or call it "no boom bass", or articulated bass. That is dipole bass. Yes you throw away efficiency, but tell me Dave, when was efficiency the dominant factor for authentic reproduction of music?

I´m sorry if you havent had the opportunity to listen to a dipole system.
You are welcome home to me anyday.
Quote:
Originally Posted by Davey View Post
"Evolution"????

Dave.
  Reply With Quote
Old 27th August 2019, 09:13 PM   #24
Davey is offline Davey  United States
diyAudio Member
 
Join Date: Dec 2001
Location: Bremerton, WA.
Quote:
Originally Posted by esl 63 View Post
Dealing with HiFi since late 70ties, i have finally reached the goal of bass-texture, or call it "no boom bass", or articulated bass. That is dipole bass. Yes you throw away efficiency, but tell me Dave, when was efficiency the dominant factor for authentic reproduction of music?

I´m sorry if you havent had the opportunity to listen to a dipole system.
You are welcome home to me anyday.
Hehehe.
You might want to read my posts again. I'm not dissing dipole bass....just inferring that a near free-air implementation (as the guys are discussing here) takes the trade-off much too far regards efficiency.

You might also do a little basic research on some of my other postings/history. My primary system in the listening room has been a dipole bass setup (of one form or another) for nearly forty years. I'm well familiar with the advantages/disadvantages of dipole bass.

Thank you for the invite though. But I'll pass.

Cheers,

Dave.
  Reply With Quote
Old 28th August 2019, 08:12 AM   #25
scottjoplin is offline scottjoplin  Wales
diyAudio Member
 
scottjoplin's Avatar
 
Join Date: Dec 2015
Location: Penrhyndeudraeth
I like the sound of dipole bass, I use U frames. What are your takes on the perceived advantages? Here's what SL says, what do you think? Frontiers
  Reply With Quote
Old 28th August 2019, 11:16 PM   #26
Davey is offline Davey  United States
diyAudio Member
 
Join Date: Dec 2001
Location: Bremerton, WA.
A better reference for SL's analysis and thinking on this is here:
Frontiers

A U-frame construction is (intuitively) somewhere between a closed-box woofer and a symmetrical dipole setup.
Your listening environment and specifics of the U-frame construction are big variables here.
John Kreskovsky is a big advocate for U-frame woofers and has some excellent analysis on his website.

Dave.
  Reply With Quote
Old 29th August 2019, 07:07 AM   #27
Juhazi is offline Juhazi  Finland
diyAudio Member
 
Juhazi's Avatar
 
Join Date: Mar 2007
Location: Jyväskylä, Finland
Any bass speaker is coupled to the floor and walls, typically below 200Hz - even a cardioid. Directivity patterns loose their meaning to large extent. A dipole bass near wall is more like a cardioid with it's null to the listener...

Speaker Placement 101: How to Fight Boundary Interference

This transitioning of real world total distribution of sound energy is very diffiut to get measured. RTA or long-gating room measurements tells about spectral balance, which is actually most important.
__________________
Radikal aktivist AINOgradient speaker project
  Reply With Quote
Old 29th August 2019, 09:28 AM   #28
scottjoplin is offline scottjoplin  Wales
diyAudio Member
 
scottjoplin's Avatar
 
Join Date: Dec 2015
Location: Penrhyndeudraeth
Quote:
Originally Posted by Juhazi View Post
Any bass speaker is coupled to the floor and walls, typically below 200Hz - even a cardioid. Directivity patterns loose their meaning to large extent.
I suspect my preference is largely down to the lack of a resonant enclosure, my U frames are shallow and crossed below the cavity resonance.
  Reply With Quote

Reply


Multiple stacked dipole bassHide 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
Dipole/OB bass -small dipole woofers vs bigger woofers on same baffle wonderfulaudio Subwoofers 10 5th May 2018 01:25 PM
Multiple dipole subs, can nulls be compensated and room response averaged out? OllBoll Room Acoustics & Mods 3 3rd September 2012 06:00 PM
Multiple Sub/Dipole/horns for small room? THE_COW_IS_OK Room Acoustics & Mods 12 27th February 2009 05:26 PM
Multiple Dipole Subs CLS Multi-Way 21 23rd February 2009 03:37 AM
Dipole Woofer Array in Multiple W Frame? MartinQ Multi-Way 9 3rd August 2004 09:20 PM


New To Site? Need Help?

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


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki