looking for Jordan JX92 (Pre S)/ JX125 project - Page 4 - 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 3rd March 2008, 06:39 PM   #31
vgeorge is offline vgeorge  Greece
diyAudio Member
 
vgeorge's Avatar
 
Join Date: Mar 2004
Location: poros island
I will only use use the frequency compensation circuit for the line array and use various coils for the bass and let u know. Thanks for all the information and help Colin.

George
  Reply With Quote
Old 4th March 2008, 02:03 PM   #32
vgeorge is offline vgeorge  Greece
diyAudio Member
 
vgeorge's Avatar
 
Join Date: Mar 2004
Location: poros island
Well, I just put the speakers to play and I think they are amazing. To a great part I think to the JX150 woofers. I cross them with a 6.9 mH coil at the moment, after trying with a lower value. I will get a very good 9 mH as ted recommends, it should make thinks better I thing.
The only think I find missing is image height, but that could be due to placement. Maybe they sound better close to the rear wall?
  Reply With Quote
Old 4th March 2008, 02:05 PM   #33
vgeorge is offline vgeorge  Greece
diyAudio Member
 
vgeorge's Avatar
 
Join Date: Mar 2004
Location: poros island
And a picture playing!
Attached Images
File Type: jpg img_0346.jpg (70.2 KB, 114 views)
  Reply With Quote
Old 4th March 2008, 02:08 PM   #34
soongsc is offline soongsc  Taiwan
diyAudio Member
 
soongsc's Avatar
 
Join Date: Mar 2005
Location: Taiwan
Quote:
Originally posted by vgeorge
Hi Colin,

after I bought your JX53 I was thinking what to do with them!
I put them in a wide baffle as you suggested at the time and sounded quite good, but put them aside as I liked my other system more.
Last month I decided to finish my project as I had some JX150 sitting around. Hope tomorrow will be finished.
I am going to use the compensation circuit suggested by Jordan and a 4.5 mH coil for the bass. Hope they sound good. You can see some pictures, hope you like them.

Geroge
Hope you have all leads to the JX53 the same length.
If you have the capability to measure impedance of the finished speakers, it would be a good idea to see if flattening out the impedance peaks would make the sound better.
__________________
Hear the real thing!
  Reply With Quote
Old 4th March 2008, 02:21 PM   #35
Colin is offline Colin  United Kingdom
diyAudio Member
 
Join Date: Aug 2003
Hi - They look very and glad to hear they sound good too. Image height is, I think, a function of using an array - the sound at HF drops off a little as you move below or above the array's field of fire. So raising the cabinets or sitting farther away may help sort this. It's also worth experimenting with toe in - Ted has his at 60 degrees in. The woofer is only rolled off at 6dB octave so it will contibute weight and warmth to the lower midrange, filling out the sound.

Okay, now I regret selling them...
  Reply With Quote
Old 4th March 2008, 02:29 PM   #36
vgeorge is offline vgeorge  Greece
diyAudio Member
 
vgeorge's Avatar
 
Join Date: Mar 2004
Location: poros island
Yes, I have all the cables measured to the same length.
Unfortunately I can' t measure the impedance of the finished speaker now.
I once did it with another speaker and a demo pc program. I still have the wires and resistors required, but it was quite complicated, and using the sound card of my laptop, I wouldn' t really trust the results. Do you know an easy way to do it?
  Reply With Quote
Old 4th March 2008, 04:31 PM   #37
Colin is offline Colin  United Kingdom
diyAudio Member
 
Join Date: Aug 2003
I think Ted's comp circuit may be all that you need. It's designed to reduce the LF gain of the array, caused by close coupling of four drivers. (Below 4kHz you'll get a gain of 6dB.)

A proper crossover may help - ie one which has both low and high pass sections - but that could be a more complex undertaking.
  Reply With Quote
Old 4th March 2008, 04:40 PM   #38
vgeorge is offline vgeorge  Greece
diyAudio Member
 
vgeorge's Avatar
 
Join Date: Mar 2004
Location: poros island
Colin, I think the reason I did not like them so much before was that they were playing full range, without the comp circuit.
Tried with different placement and sound even better! I will experiment more and cross them lower and with a better quality coil than now and then decide what to do, but I prefer to stay as simple in the crossover as possible. Anyway, I am really exited with the speakers now!
  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
jordan jx125 beckypumps Full Range 8 29th August 2007 11:28 AM
FS single jordan jx125 pamaz Swap Meet 3 6th February 2007 03:31 PM
wtb jordan jx125 pamaz Swap Meet 6 27th April 2006 06:32 AM
FS: 2x Jordan JX125 digitoxin Swap Meet 1 10th April 2006 05:11 PM
searching for a single jordan jx125 pamaz Swap Meet 0 12th July 2005 01:43 PM


New To Site? Need Help?

All times are GMT. The time now is 08:37 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