Fostex FT207D tweeters - 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 2nd December 2008, 01:17 AM   #1
diyAudio Member
 
zener_diode's Avatar
 
Join Date: Nov 2007
Location: Michigan
Default Fostex FT207D tweeters

Anyone use these? I'm getting ready to buy a pair.
Just wondered if anyone had comments about them.

thanks,
zener
__________________
1N4733
  Reply With Quote
Old 2nd December 2008, 03:51 AM   #2
badman is offline badman  United States
diyAudio Member
 
badman's Avatar
 
Join Date: Sep 2003
Location: Sunny Tustin, SoCal
From the trading post no doubt? If not, check there for a member selling them half price. I'm also curious about the fostex domes, many of their products are very good indeed. FT7RP ribbon is nice, and ff85k and ff225k are both excellent 'fullrangers'. 85k gives up a couple octaves on the bottom, 225k gives one on the bottom and one on the top, both well-done compromises.
__________________
I write for www.enjoythemusic.com in the DIY section. You may find yourself getting a preview of a project in-progress. Be warned!
  Reply With Quote
Old 2nd December 2008, 04:09 AM   #3
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
I've heard the FT207 in a number of Tim Forman'smultiway creations. They are quite good. They are limited in how low they go (but i figure you shouln't be XOing a tweeter lower than it can go anyway)

Pic of a 3-way with WR125 & Extremis

dave
Attached Images
File Type: jpg extremis-3way.jpg (48.9 KB, 218 views)
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 2nd December 2008, 04:09 AM   #4
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
and a close-up
Attached Images
File Type: jpg extremis-3way-xo.jpg (20.7 KB, 204 views)
  Reply With Quote
Old 2nd December 2008, 09:48 AM   #5
diyAudio Member
 
zener_diode's Avatar
 
Join Date: Nov 2007
Location: Michigan
Quote:
Originally posted by planet10
I've heard the FT207 in a number of Tim Forman'smultiway creations. They are quite good. They are limited in how low they go (but i figure you shouln't be XOing a tweeter lower than it can go anyway)

Pic of a 3-way with WR125 & Extremis

dave

Thanks for the feedback. I was thinking about crossing them over at
2k. Which seems OK from the data sheet, but lower than the XO that
is shown in the data sheet. What do you think?
__________________
1N4733
  Reply With Quote
Old 2nd December 2008, 09:52 AM   #6
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Quote:
Originally posted by zener_diode

Thanks for the feedback. I was thinking about crossing them over at
2k. Which seems OK from the data sheet, but lower than the XO that
is shown in the data sheet. What do you think?
For some reason i have a 5k minimum XO in my head (that is as low as i'd take a dome anyway... any lower and you need a better mid.

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 2nd December 2008, 03:56 PM   #7
badman is offline badman  United States
diyAudio Member
 
badman's Avatar
 
Join Date: Sep 2003
Location: Sunny Tustin, SoCal
Default 2k is a stretch, but...

5k? Huge directivity shift at the crossover frequency.... I understand your desire to keep the crossover well away from the mid, but then, that makes more directional tweeters a more viable choice. Horns and ribbons rule the day in "beaming midrange" crossover territory, IMO.
__________________
I write for www.enjoythemusic.com in the DIY section. You may find yourself getting a preview of a project in-progress. Be warned!
  Reply With Quote
Old 2nd December 2008, 04:06 PM   #8
diyAudio Member
 
Join Date: Dec 2004
Location: Reston, Virginia
Default Re: Fostex FT207D tweeters

Quote:
Originally posted by zener_diode
Anyone use these? I'm getting ready to buy a pair.
Just wondered if anyone had comments about them.

thanks,
zener
I haven't used this model, but I've used the FT28D. The FT28D is a very good tweeter. I compared a number of tweeters a while back using an 8-pole crossover at 2900Hz, and I was a bit surprised that the FT28D sounded almost identical to the Vifa XT19, in spite of the very different materials and construction. I would expect the FT207D to be a good performer as well.
  Reply With Quote
Old 2nd December 2008, 06:49 PM   #9
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Default Re: 2k is a stretch, but...

Quote:
Originally posted by badman
5k? Huge directivity shift at the crossover frequency.... I understand your desire to keep the crossover well away from the mid, but then, that makes more directional tweeters a more viable choice. Horns and ribbons rule the day in "beaming midrange" crossover territory, IMO.
One of the reasons i didn't get any of these (they were offered a long time ago).

They worked quite well with the WR125 crossed at 5k.

I'm more a horn crossed at 10-15k myself. The "mid" i'd be XOing to has pretty good off-axis performance according to the best data i've been able to gather so far (off axis is ~20 and 40 degrees -- top end is limited above about 15 k, so i don't know whether the on-axis is plummeting up there or the mic)

dave
Attached Images
File Type: gif fonken-inroom-measures.gif (25.6 KB, 131 views)
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 2nd December 2008, 07:07 PM   #10
badman is offline badman  United States
diyAudio Member
 
badman's Avatar
 
Join Date: Sep 2003
Location: Sunny Tustin, SoCal
What mid is that? Is it our loverly 85k?
__________________
I write for www.enjoythemusic.com in the DIY section. You may find yourself getting a preview of a project in-progress. Be warned!
  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
Fostex T90A Super Tweeters boonedog Swap Meet 0 17th January 2008 03:51 AM
FS: Fostex T925A horn Tweeters overmind Swap Meet 0 15th September 2007 02:51 AM
Fostex bullet horns/tweeters t. Multi-Way 2 22nd October 2006 06:34 PM
Fostex tweeters on Ebay cheap GrahamnDodder Multi-Way 7 5th June 2004 03:28 PM
Fostex horn tweeters and more bequerel Swap Meet 12 15th March 2004 07:21 AM


New To Site? Need Help?

All times are GMT. The time now is 01:37 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