How about linear distortion (stored energy) of full range drivers? - 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 29th December 2004, 10:57 AM   #1
Elias is offline Elias  Finland
diyAudio Member
 
Elias's Avatar
 
Join Date: May 2003
Location: Where you live
Question How about linear distortion (stored energy) of full range drivers?

Se on moro!

I haven't seen stored energy measurements made for full range drivers e.g. fostex, beyma, visaton, tangband, monacor and others. So I'm wondering how (bad) they would compare at high freqs with normal dome tweeters? Large cones (up to 8") resonate at high freqs so one would expect them to be much worse in this regard.

And the principal question of how much emphasis one should put on stored energy behaviour of drivers when compared to other factors as nonlinear distortion, power response and room acoustics a.o. still remains unaswered to me. What do you think?


Here's a couple of familiar links of stored energy measurements:

http://www.woodartistry.com/linkwitzlab/mid_dist.htm

http://206.13.113.199/ncdiyaudio/mark/Testing_page.htm

http://www.mfk-projects.com/Measurements.htm


- Elias
  Reply With Quote
Old 7th January 2005, 03:51 AM   #2
MarkMcK is offline MarkMcK  United States
diyAudio Member
 
Join Date: Aug 2003
Location: Ohio
Don't get too caught up in the jargon. Stored energy and linear distortion may sound sexy, but it is just a different way of displaying the same phenomenom shown in waterfall response graphs and in my own decay response graphs. Both waterfall response graphs and decay response graphs have been around for a long time. Both have been used to show the performance of full-range drivers.

It is just with the waterfall and decay response graphs you see the frequency component too.

The stored energy or linear distortion is also seen in an impluse response graph. Impulse responses just contain so much data that most people find them hard to read.

Good designing and good building,

Mark
  Reply With Quote
Old 11th January 2005, 09:18 AM   #3
Elias is offline Elias  Finland
diyAudio Member
 
Elias's Avatar
 
Join Date: May 2003
Location: Where you live
Moro!

I'm not aware of any web page showing these kind of tests of fullrange drivers.

It makes me wonder if people are building fullrange speakers without paying much attention or interest on this aspect? I would have thought the cone resonance free reproduction would have been the preference, but maybe not then...

- Elias
  Reply With Quote
Old 11th January 2005, 01:10 PM   #4
diyAudio Member
 
Join Date: May 2002
Location: Switzerland
http://www.manger-msw.de/en/produkte...zerfall_gr.jpg
  Reply With Quote
Old 18th January 2005, 08:29 AM   #5
diyAudio Member
 
Join Date: Feb 2002
Location: Germany
And that's polite. The recent measurment in HobbyHifi looked messier, and real fullranges like the Visaton B200 and Ciare CH250 are a real mess!
  Reply With Quote
Old 18th January 2005, 12:03 PM   #6
diyAudio Member
 
Join Date: May 2002
Location: Switzerland
Quote:
And that's polite. The recent measurment in HobbyHifi looked messier, and real fullranges like the Visaton B200 and Ciare CH250 are a real mess!
Will have to look at this one and compare.

BTW: IMO real instruments usually have initial transients and all of them have some sustain which is most often slower than a driver's decay (even the average listening room is far worse than this). As long as the initial transient is faithfully reproduced (and that's what even the cheapest fullranges do better than many kilo-$ multiway speakers can do ) and the decay isn't excessive one doesn't have to care too much IMHO.

Regards

Charles
  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
How do you run your sub with full range drivers? gnugear Full Range 10 21st May 2008 11:01 PM
Measuring Stored Energy (software) cotdt Multi-Way 9 15th March 2006 06:08 PM
stored energy in output transformer? rick57 Tubes / Valves 4 15th March 2005 07:46 AM
Full range drivers. tade Full Range 5 2nd March 2005 02:59 PM
Full Range Drivers Mohan Varkey Introductions 11 3rd February 2002 10:27 AM


New To Site? Need Help?

All times are GMT. The time now is 05:30 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