Eton 11-581 in TL box? - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way

Multi-Way Conventional loudspeakers with crossovers

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 20th March 2006, 06:09 PM   #1
ronning is offline ronning  Norway
diyAudio Member
 
Join Date: Mar 2005
Location: Norway
Question Eton 11-581 in TL box?

I have a pair of Eton 11-581 that i still havent used, and was woundering if any of you have seen or heard them in a transmission line box? The figures look good, but i have never heard of anybody(commercial or diy) using this driver for a transmission line, so I was wounderiung if maybe i missed out on something?
  Reply With Quote
Old 20th March 2006, 11:52 PM   #2
GM is online now GM  United States
diyAudio Member
 
GM's Avatar
 
Join Date: Jun 2003
Location: Chamblee, Ga.
Greets!

It's Qts is a bit low, so for a 'classic' end loaded TL it needs to be tuned to around 70 Hz (max flat impedance alignment) for best results, so figure response down to around 35-40 Hz in a corner. To get gain all the way to Fs will require a huge cab.

GM
__________________
Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.
  Reply With Quote
Old 5th March 2009, 10:05 PM   #3
dpaws is offline dpaws  United Kingdom
diyAudio Member
 
Join Date: Jan 2005
Location: Essex, UK
Just wondering what you ended up building? I've just bought a pair and am looking at a TL tuned to ~26Hz from ~90 litres...
  Reply With Quote
Old 5th March 2009, 10:50 PM   #4
pkitt is offline pkitt  United States
diyAudio Member
 
Join Date: Feb 2009
For this exact same Eton woofer, I modeled a 15:1 tapered TL that has a closed-end area of 11" x 15" and an open-end area of 11" x 1" with a line length of 60" and with the woofer's center 12" from the closed end. This gave very good results; an F3 of 28 Hz and very little ripple (+/- 1 dB) above 200 Hz. I used a stuffing density of 1 lb/cu.ft. for the first 31" of the line. The tuning frequency is much, much lower than your suggested 70 Hz.

Quote:
Originally posted by GM
Greets!

It's Qts is a bit low, so for a 'classic' end loaded TL it needs to be tuned to around 70 Hz (max flat impedance alignment) for best results, so figure response down to around 35-40 Hz in a corner. To get gain all the way to Fs will require a huge cab.

GM
  Reply With Quote
Old 5th March 2009, 11:03 PM   #5
GM is online now GM  United States
diyAudio Member
 
GM's Avatar
 
Join Date: Jun 2003
Location: Chamblee, Ga.
It's also not a TL, which is what the OP asked for, but a high compression ratio TQWT.

That said, had he just asked for suggestions, a 10:1 CR TQWT is my default for such drivers.

GM
__________________
Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.
  Reply With Quote
Old 5th March 2009, 11:15 PM   #6
pkitt is offline pkitt  United States
diyAudio Member
 
Join Date: Feb 2009
Default What's not a TL?

What I described is just as much a TL as what you described. It happens to be tapered to provide a much better (smoother) response than a "classical" non-tapered TL with a lower F3 to boot. You're nit-picking and mincing words (remember Bill Clinton asking what "is" meant when he was on "trial") and only adding to confusion about what is or is not a TL when you make statements like this. A TL, whatever its configuration or specific name, utilizes the 1/4-wavelength resonant frequency of the line to augment bass response.

Quote:
Originally posted by GM
It's also not a TL, which is what the OP asked for, but a high compression ratio TQWT.

That said, had he just asked for suggestions, a 10:1 CR TQWT is my default for such drivers.

GM
  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
Eton 5-880 jmillerdoc Multi-Way 2 25th July 2009 10:17 PM
eton 11.2 kit? tc-60guy Multi-Way 2 4th August 2006 12:01 PM
Eton 11.2 konky Multi-Way 1 11th September 2005 07:56 PM
Eton 11-581/50 HEX AuroraB Multi-Way 7 7th September 2004 02:57 PM
Speaker with Eton Er4,Eton 11-581 and T&P C79 ?? guru Multi-Way 2 7th May 2004 09:36 PM


New To Site? Need Help?

All times are GMT. The time now is 06:00 AM.


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