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

Software Tools SPICE, PCB CAD, speaker design and measurement software, calculators

LIMP bug?
LIMP bug?
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 6th September 2009, 09:59 PM   #1
crazyhub is offline crazyhub  France
diyAudio Member
 
Join Date: Nov 2005
Location: alsace
Default LIMP bug?

Hi!

I presently began to perform some T/S parameters measurements with the added mass method in LIMP. I just found that "Le" value in the exported CVS file is quite different than what I can read in the result window; did anyone remark the same thing?
Thanks
__________________
crazyhub
  Reply With Quote
Old 16th September 2009, 02:32 PM   #2
David_Web is offline David_Web  Sweden
diyAudio Member
 
Join Date: Sep 2008
Happens to me as well. Not sure why though.

You could check the correct value with the RCL sampling tool as I have found it correct with many components from resistors to caps and inductors. 1k would probably be good as most mfgrs spec at that frequency.
  Reply With Quote
Old 16th September 2009, 04:43 PM   #3
crazyhub is offline crazyhub  France
diyAudio Member
 
Join Date: Nov 2005
Location: alsace
Hi David,

Yes it's a bug, in any case confirmed by another french user of LIMP.

BTW, on my W5-876SA Tang-Band woofer I measured 2.06mH with my selfmeter, so approx. near 1Khz.
The T/S calculator in LIMP gave me Le = 4.61mH, same value with or without an added mass.
And I read 2.6mH at 1Khz on the inductive impedance curve with the LIMP RLC tool...

So quite different values...As I read it sometimes, it seems that at least some T/S parameters are difficult to catch!

Cheers,

Hubert
__________________
crazyhub
  Reply With Quote

Reply


LIMP bug?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

Forum Jump


New To Site? Need Help?

All times are GMT. The time now is 12:20 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio
Wiki