2 way crossover design help - Page 15 - 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 30th December 2012, 09:10 AM   #141
diyAudio Member
 
wolf_teeth's Avatar
 
Join Date: Mar 2006
Location: Indiana
Blog Entries: 1
Quote:
Originally Posted by ODougbo View Post
The XT25TG30-04 says it goes to down to 1,500.
The Xt25TG30 is only good to about 2.2kHz. HD rises below there.
Later,
Wolf
__________________
Photobucket picture pages: http://photobucket.com/Wolf-Speakers_and_more
Writeups/thoughts/blogs: http://techtalk.parts-express.com/blog.php?u=4102
  Reply With Quote
Old 30th December 2012, 10:44 AM   #142
ODougbo is offline ODougbo  United States
diyAudio Member
 
Join Date: Aug 2011
Location: Maryland USA
The Vifa does not go as low as the Morel, but it goes a lot higher.

This is what I had laying around and going to test today.

The resistors are only 5 watt, 4ohm+1ohm.
Attached Images
File Type: jpg DSCN1056.JPG (739.8 KB, 79 views)
  Reply With Quote
Old 30th December 2012, 11:36 AM   #143
AllenB is offline AllenB  Australia
diyAudio Member
 
Join Date: Oct 2008
Quote:
Originally Posted by ODougbo View Post
The resistors are only 5 watt, 4ohm+1ohm.
As a more than six Watt equivalent single resistor, and adequate all the same.
  Reply With Quote
Old 30th December 2012, 11:57 AM   #144
ODougbo is offline ODougbo  United States
diyAudio Member
 
Join Date: Aug 2011
Location: Maryland USA
I see thanks.

Yup, more middle - I'm not sure midrange is this driver's strong suit.
  Reply With Quote
Old 30th December 2012, 09:56 PM   #145
ODougbo is offline ODougbo  United States
diyAudio Member
 
Join Date: Aug 2011
Location: Maryland USA
Steve,

That was a good fix; had to go back and lower the tweeter cap to 3.9uF.
(There was overlap in the middle)

Yeah, they sound great - going to duplicate the second pair.
Attached Images
File Type: jpg Temp21.jpg (27.4 KB, 66 views)
  Reply With Quote
Old 3rd January 2013, 08:02 AM   #146
ODougbo is offline ODougbo  United States
diyAudio Member
 
Join Date: Aug 2011
Location: Maryland USA
Attached Images
File Type: jpg DSCN1075.JPG (400.1 KB, 61 views)
  Reply With Quote
Old 4th January 2013, 12:46 PM   #147
diyAudio Member
 
tuantran's Avatar
 
Join Date: Jun 2011
Location: Ottawa
Blog Entries: 1
Congratulation !
  Reply With Quote
Old 4th January 2013, 06:26 PM   #148
system7 is offline system7  United Kingdom
diyAudio Member
 
system7's Avatar
 
Join Date: Aug 2008
Quote:
Originally Posted by tuantran View Post
Congratulation !
Indeed. Very interesting bit of work with a time-aligned polycone and the Vifa XT25 standard edition. Looks a good tweeter. I should buy some.

If you want a further refinement, you could tidy up any tendency to tweeter 500Hz Fs resonance with a ZAph Audio Fs correction which he makes to be a 100uF/1mH/4.7R total resistance LCR shunt at 500Hz. Not often I quote Zaph, who is GOD in some people's eyes and seems to command a fanatical following, but I'd trust he hasn't messed this Vifa XT25 Fs correction up totally anyway. You can disregard all the other dynaudio-style stuff since you are time-aligned.

An expensive circuit, especially in polypropylene capacitors, but hey, we like trying things.
__________________
Well, there it is! Best regards from Steve in Portsmouth, UK.
  Reply With Quote
Old 4th January 2013, 06:47 PM   #149
sreten is offline sreten  United Kingdom
diyAudio Member
 
Join Date: Nov 2003
Location: Brighton UK
Quote:
Originally Posted by system7 View Post
Zaph, who is GOD in some people's eyes and seems to command a fanatical following,
Hi,

That is not a very informed comment. He doesn't BS, he doesn't conjecture,
everything he does is backed up by measurement and reasoning. He states
some things are his personal preference, which is up to you to take or leave,
he doesn't pontificate.

There is a wiff of hypocrisy here. He has fans (me included) because of
his no nonsense and no conjecture approach, nothing godlike about it
and nothing to do with people being fanatical in the sense you imply.

A very reliable source of good real information, one of, if not, the best.

rgds, sreten.
__________________
There is nothing so practical as a really good theory - Ludwig Boltzmann
When your only tool is a hammer, every problem looks like a nail - Abraham Maslow
  Reply With Quote
Old 4th January 2013, 06:56 PM   #150
system7 is offline system7  United Kingdom
diyAudio Member
 
system7's Avatar
 
Join Date: Aug 2008
Zaph is OK, it's some of his his friends I don't care for.

IMO, GOD on Earth wears the No.28 shirt for the Minnesota Vikings.

Click the image to open in full size.

Now get a sense of humour.
__________________
Well, there it is! Best regards from Steve in Portsmouth, UK.
  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
5 Way Crossover design *HELP!* beeferer Multi-Way 18 21st June 2011 01:39 PM
Crossover design hybridfiat Multi-Way 27 20th July 2008 01:07 PM
need help with this crossover design Xristo Multi-Way 2 14th January 2005 05:39 AM
Crossover Design ! postman Multi-Way 21 15th April 2003 07:36 PM
Crossover design Bose(o) Multi-Way 23 11th February 2002 07:22 AM


New To Site? Need Help?

All times are GMT. The time now is 11:07 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