diy build: questions about wire stators: ideal distance from each other and diaphragm - diyAudio
Go Back   Home > Forums > Loudspeakers > Planars & Exotics

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

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 13th January 2013, 02:53 PM   #1
diyAudio Member
 
Join Date: Jan 2013
Default diy build: questions about wire stators: ideal distance from each other and diaphragm

Hello,

I'm new to this forum (allthough not new to building ESLs). At the moment I've got a standard set of L/R full range ESLs that died on me a few days ago, so I'm looking to build me a new system. Since I like to challenge myself (to insane degrees sometimes), I want to build my next system a little more complicated...

The idea is to build a 4.1 surround system (4 sets of 2 ESLs, and a normal cone subwoofer), with separate ESLs for hi (tweeter) and mid ranges. The idea is to tweak the size of the diaphragm, distances between stator and diaphragm, diameter of the wires, the distance between the wires, and even the input signals, to get the best possible sound quality.

First question: Anyone got an idea if splitting the high and mid ranges is worth it sound quality wise?

Second question: Anyone have any idea of ideal sizes and distances, or where I can find the necessary physics to do the calculations? There were internet resources for this ten years ago when I built my previous set of ESLs, but the links I saved from those long gone days are dead and buried (even the way back machine came up empty).

So, what do you think?

thanks for reading, and greetings,

Kardinaal
  Reply With Quote
Old 13th January 2013, 03:08 PM   #2
tyu is offline tyu  United States
diyAudio Member
 
Join Date: Jul 2009
Search....theres tons of ESL info here on this site...all most can do is say the same thing thats been said befor..is this site great or what... other well have input but you can get started now!..........good luck
  Reply With Quote
Old 14th January 2013, 11:07 AM   #3
Calvin is offline Calvin  Germany
diyAudio Member
 
Calvin's Avatar
 
Join Date: Nov 2004
Location: close to Basel
Hi,

sounds like a set of 4 FR-ESLs and one Sub. If the ESLs are required to go way down below 100Hz then flat wire stators are best.
100Hz requires at minimum 1.5mm diaphragm-stator distance with large sized panels. With modest sized panels 2.5 to 3mm are more feasable.
No separation of low-mid and mid-high. Its just an unnecessary crossover point, generating problems and spoiling sound. Wire stators lend themselves for electrical segmentation which is kind of elegant transducer-internal crossover in that it reduces the active membrane area with rising frequency.

jauu
Calvin
  Reply With Quote
Old 14th January 2013, 02:06 PM   #4
oshifis is offline oshifis  Hungary
diyAudio Member
 
Join Date: Mar 2004
Location: Budapest, Hungary
Don't the wire stators act as kind of harp strings?
  Reply With Quote
Old 14th January 2013, 03:14 PM   #5
Bazukaz is offline Bazukaz  Lithuania
diyAudio Member
 
Bazukaz's Avatar
 
Join Date: Nov 2005
Location: Vilnius
Send a message via Skype™ to Bazukaz
I am running a flat wire ESL(~0.35 sq. meters) with a D/S spacing of 1.4 mm down to 100 hz. No problems with excursion limit as long as main resonance frequency(@60Hz) is filtered. A 24db/oct active filter is required.

A wire ESL has some advantages over other types :

1) Robust and reliable , i.e no arcing, safe to use.
3) Dispersion can be controlled by using different electrical segmentation; can be from fair to very good.

In my opinion the open area is best around ~20%-30% to have some damping on diaphragm. This means you have to use a lot of wires.
Others may have a different opinion about this.
If you want to use separate diaphragm areas for high/mid range you could split the panel into segments both electrically and mechanically. Its a common practice, but usually not used with wire ESLs.
In theory this could allow for lower intermodulation products but IMO for a well build wire ESL that is not required.

Regards,
Lukas.

Last edited by Bazukaz; 14th January 2013 at 03:25 PM.
  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
first diy speaker build, tri tix vented. couple questions rockironwebb Multi-Way 2 15th June 2012 10:53 AM
magnet wire for stators slr 5000 Planars & Exotics 29 16th September 2010 01:44 PM
Wire stators, tension, stator bending? Nevod Planars & Exotics 11 29th August 2008 12:55 PM
24 gauge CAT 5 wire for stators. dstockwell Planars & Exotics 4 8th January 2006 11:16 PM
Amorphous metal as ideal diaphragm material? 454Casull Multi-Way 14 2nd April 2004 10:40 PM


New To Site? Need Help?

All times are GMT. The time now is 08:59 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