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 8th January 2013, 01:23 PM   #1
diyAudio Member
 
xecluded's Avatar
 
Join Date: Jul 2008
Location: 10,000 lakes
Default Foster 8F3

Does anyone know what I can use these Foster 8F3 for. My friend gave me two pairs of these along with the crossovers for them. Crossover is a 1st order with a 2mh choke to woofer and a 30uf cap to the tweeters which wired in parallel. He does not have woofers for them and can't remember where/how he got these neat looking things. I borrowed these picts from ebay but mine look exactly the same.
Attached Images
File Type: jpg 1.JPG (601.0 KB, 127 views)
File Type: jpg 2.jpg (611.7 KB, 124 views)
  Reply With Quote
Old 9th January 2013, 12:18 PM   #2
IG81 is offline IG81  Canada
diyAudio Member
 
IG81's Avatar
 
Join Date: Feb 2008
Neat. I've always wanted to find a pair of 10F3 locally, no luck yet. I understand the 8F3 is the 3" model.

One thing to check for is Stiff Surround Syndrome. You can sometimes tell by how supple the surround feels, but measuring Fs is a better way to tell. In any case, I'd expect the Fs for good surrounds to be quite high anyway, so you're likely better off crossing these around 300Hz in a small sealed box or aperiodic stuffed-line, or even OB if you fancy that. I recommend a PLLXO to save money and avoid interaction with the impedance peak that is likely around 150Hz-250Hz.

IG
  Reply With Quote
Old 10th January 2013, 02:07 AM   #3
diyAudio Member
 
xecluded's Avatar
 
Join Date: Jul 2008
Location: 10,000 lakes
Humm, are these 8F3 full range or tweeters - they seem really small.

I still have a brand new pair 10F3 16ohm. Maybe it's time to bring them out and play
  Reply With Quote
Old 10th January 2013, 02:16 AM   #4
Speakerholic
diyAudio Moderator
 
Cal Weldon's Avatar
 
Join Date: Jan 2004
Location: British Columbia
I have the 10F3's as well and have been looking to get my hands on a pair of 8F3's for the Cornu spiral horn. Any chance you want to sell one of the pairs?
__________________
Next stop: Margaritaville
Some of Cal's stuff | Cal Weldon Consulting
  Reply With Quote
Old 10th January 2013, 02:25 AM   #5
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
I have 3 of these, althou the cones are dark. A lovely driver... think 40-50 yr old precursor to FE83, or FF85. Mine came out of a Noresco FAST ... XOed to (IIRC) an 8 Isophon alnico woofer.

Cal, i've not found a use for these yt, so maybe we can do a deal. I think mine are at least part-way to phase plugs installed.

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 10th January 2013, 02:35 AM   #6
diyAudio Member
 
xecluded's Avatar
 
Join Date: Jul 2008
Location: 10,000 lakes
Quote:
Originally Posted by Cal Weldon View Post
I have the 10F3's as well and have been looking to get my hands on a pair of 8F3's for the Cornu spiral horn. Any chance you want to sell one of the pairs?
Sure. I will sell you one pair though you may want to check with Dave first as he is in the same area as you and shipping cost maybe a lot less than coming from Texas.
  Reply With Quote
Old 10th January 2013, 12:38 PM   #7
IG81 is offline IG81  Canada
diyAudio Member
 
IG81's Avatar
 
Join Date: Feb 2008
Quote:
Originally Posted by xecluded View Post
Humm, are these 8F3 full range or tweeters - they seem really small.
They are "fullrange" drivers AFAIK. A more sensible term might be mid-tweeter though.

Dave, what's the Fs on your 8F3's?

IG
  Reply With Quote
Old 10th January 2013, 01:36 PM   #8
Speakerholic
diyAudio Moderator
 
Cal Weldon's Avatar
 
Join Date: Jan 2004
Location: British Columbia
xecluded,

I think you're right. If Dave has them, it's probably best to deal with him. Thanks for understanding.

He's only about 60 miles as the crow flies but it takes about 4 hours to getl there. Drive, line up, ferry ride, then drive some more.
__________________
Next stop: Margaritaville
Some of Cal's stuff | Cal Weldon Consulting
  Reply With Quote
Old 10th January 2013, 05:07 PM   #9
chrisb is offline chrisb  Canada
diyAudio Member
 
Join Date: Aug 2002
Location: victoria BC
Quote:
Originally Posted by Cal Weldon View Post
xecluded,

I think you're right. If Dave has them, it's probably best to deal with him. Thanks for understanding.

He's only about 60 miles as the crow flies but it takes about 4 hours to getl there. Drive, line up, ferry ride, then drive some more.


Wassa matter - out of fuel for your jetpack

yeah, a round trip can chew up a whole day and the best part of $200 (not including the beer, so double(?) that )
__________________
you don't really believe everything you think, do you?
community sites t-linespeakers.org, frugal-horn.com commercial site planet10-HiFi
  Reply With Quote
Old 10th January 2013, 05:45 PM   #10
Speakerholic
diyAudio Moderator
 
Cal Weldon's Avatar
 
Join Date: Jan 2004
Location: British Columbia
Quote:
Originally Posted by chrisb View Post
Wassa matter - out of fuel for your jetpack
Mr B you always crack me up.
__________________
Next stop: Margaritaville
Some of Cal's stuff | Cal Weldon Consulting
  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
Foster tweeter Godzilla Multi-Way 8 2nd January 2012 07:22 PM
Looking for Foster FF85K NickC Swap Meet 0 16th April 2007 04:28 PM
Neofone and Foster _henry_ Full Range 20 8th February 2007 05:34 AM
Foster 25E33 ? ark Multi-Way 4 29th September 2006 04:05 AM
Foster 100K03 tuberider Full Range 0 27th September 2005 11:47 AM


New To Site? Need Help?

All times are GMT. The time now is 06:35 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