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

XSim free crossover designer
XSim free crossover designer
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
Thread Tools Search this Thread
Old 19th September 2018, 04:47 AM   #561
perceval is offline perceval  Taiwan
diyAudio Member
perceval's Avatar
Join Date: Feb 2014
Location: Taiwan
I re-did the zma file again with the woofers mounted on the baffle... it worked this time.

I added an extra inductor, and it looks good. I've built the one with only one 1mH and it measures well and sounds ok too. Will probably be better when I get another extra 1mH inductors.
Attached Images
File Type: png Screen Shot 2018-09-19 at 12.42.20 PM.png (116.4 KB, 84 views)
  Reply With Quote
Old 19th September 2018, 09:10 AM   #562
CD94 is offline CD94  United Kingdom
diyAudio Member
Join Date: Dec 2009
Exclamation Beware using published response curves in Xsim

I recently completed a pair of 3-way TLs using Volt 15" bass and 3" dome mid plus a Scanspeak tweeter using Xsim for the crossover design. What a brilliant software application! My first crossover was based on the manufacturers' published curves converted to frd and zma using FP Graph Tracer. The result was a ruler-flat response - see attached picture. Too good to be true? YES

Then I measured the drivers in cabinet with Omnimic and DATS. to create real frd and zma data. When I applied these to the original crossover design the results were not what I wanted - see attached picture.
I tried various crossover designs and the best I could produce gave the results in the third picture (the mid was measured inverted). The final crossover is very different from the first attempt. I constructed it and listened. The completed speakers sound very natural and revealing but the treble was a bit strong so I deviated with a 1ohm series resistor to the tweeter, which produced a more natural sound (mainly orchestral and choral music).
My purpose for posting this is to point out how important it is to measure the drivers rather than rely on published date from the manufacturers. I guess most of you know that already.
Attached Images
File Type: png Screenshot (28).png (175.7 KB, 82 views)
File Type: png Screenshot (27).png (176.9 KB, 80 views)
File Type: png Screenshot (26).png (175.3 KB, 78 views)
  Reply With Quote


XSim free crossover designerHide 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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Update to Windows Passive Crossover Designer available dlr Software Tools 1 15th May 2014 10:46 PM
Windows Passive Crossover Designer v1.2 available for download dlr Software Tools 15 13th December 2013 11:48 PM
Active Crossover Designer version 2 released CharlieLaub Software Tools 1 12th November 2012 09:08 PM
Orcad/AutoTRAX EDA - free schematic capture/PCB designer Ilija Everything Else 3 16th July 2003 11:11 AM

New To Site? Need Help?

All times are GMT. The time now is 06:30 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio