Another pair of FONKEN PRIMES - diyAudio
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 26th February 2011, 02:31 PM   #1
Decca is offline Decca  United Kingdom
diyAudio Member
 
Join Date: Jan 2011
Default Another pair of FONKEN PRIMES

Hi All,
I'm new here and thought I'd share my recent Fonken build with you all.

I got the FE127en drivers from Dave at P10 and the cabs were built as recommended in 1/2" birch ply, 3/4 for front baffle. Joints were 1/2 lapped for extra surface contact for the glue. Boxes built and then the champher was cut in one pass on bench saw. Rebated the cab top and bottom so the brace slides in to meet the back of the drivers. My router and table saw did most of the hard work.
All internals are lined with 12mm dense wool fabric. Speakers are sat on the wool in one of the pics below.
Finished with 2 undercoats and 3 coats of white diamond/eggshell. The champhered edge has 6 coats of clear satin laquer.
I built some simple stands to match. 500mm long - M12 threaded rods through a 38mm flag. The top is MDF which is countersunk to accept the nuts on the rods. And that's about it.
Only had chance to give them a quick workout but will post my impressions once I've had an extended listen this weekend.

Here's a few pics.......

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.
  Reply With Quote
Old 26th February 2011, 02:57 PM   #2
Pano is online now Pano  United States
diyAudio Moderator
 
Pano's Avatar
 
Join Date: Oct 2004
Location: Milliways
Blog Entries: 4
Nice, thanks for posting.

Note about posting photos:
http://www.diyaudio.com/forums/blogs...ges-forum.html

Thank you.
__________________
Take the Speaker Voltage Test!
  Reply With Quote
Old 26th February 2011, 03:46 PM   #3
doorman is offline doorman  Canada
diyAudio Member
 
doorman's Avatar
 
Join Date: Jul 2003
Location: Vancouver Isl. B.C.
Nice job Decca! They are certainly a fun build, and the tight, controlled bass is special IMHO.
High WAF too!
Thanks for posting.
Don
  Reply With Quote
Old 26th February 2011, 04:16 PM   #4
Decca is offline Decca  United Kingdom
diyAudio Member
 
Join Date: Jan 2011
Quote:
Originally Posted by doorman View Post
Nice job Decca! They are certainly a fun build, and the tight, controlled bass is special IMHO.
High WAF too!
Thanks for posting.
Don
True about the bass, very well defined and cleaner than my old 6.5" floorstanders, although my initial listening suggests I may need to add a little reinforcement with a sub in the future. Nothing earthquaking but a little more bass warmth would help to my ears.
Massively high WAF and was the reason I chose the Primes.
  Reply With Quote
Old 26th February 2011, 04:55 PM   #5
diyAudio Member
 
Join Date: Feb 2004
Location: Appleton, WI
Outstanding. I always appreciate clear pictures of things I've considered building but held off on because computer drawings don't give enough information.

Currently working on assembling a K12 Karlson.
  Reply With Quote
Old 26th February 2011, 06:00 PM   #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 Decca View Post
I may need to add a little reinforcement with a sub in the future. Nothing earthquaking but a little more bass warmth would help to my ears.
Very nice Allan.

I'd suggest something that is not a sub per se. A good midbass -- there are tons of those -- that has good response up to at least 1k. Gives up some on the bottom, for good integration with the Fonken.

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 26th February 2011, 06:21 PM   #7
SunRa is offline SunRa  Romania
diyAudio Member
 
Join Date: Aug 2004
Location: Romania
Very nice build. I am thinking more and more often to a Fonken. I would do only two "improvements" to this design. I would try to round-over the sharp edges (it's already great the angle with the baffle is 45, not 90). I think this would also contribute positively to the looks of it, not only help diffraction. And second, I would definitely try to bury the frame of the 127 in the baffle.
  Reply With Quote
Old 26th February 2011, 07:32 PM   #8
diyAudio Member
 
aptquark's Avatar
 
Join Date: Jun 2010
Location: MS
Blog Entries: 1
Quote:
Originally Posted by planet10 View Post
Very nice Allan.

I'd suggest something that is not a sub per se. A good midbass -- there are tons of those) that has good response up to at least 1k. Gives up some on the bottom, for good integration with the Fonken.

dave
Heck of a build! Dave, what's the bottom end on those suckers?
And, when you say midbass, is that just a sub but with midbass characteristics?
  Reply With Quote
Old 26th February 2011, 07:39 PM   #9
Decca is offline Decca  United Kingdom
diyAudio Member
 
Join Date: Jan 2011
Quote:
Originally Posted by aptquark View Post
Heck of a build! Dave, what's the bottom end on those suckers?
And, when you say midbass, is that just a sub but with midbass characteristics?
Thanks for the info Dave,
I'd appreciate more info on the mid bass option you describe too.
I've a couple of redundent 6.5" woofers I could use with the right cabinet or do you have any recommendations that you could supply and or/ cabinet designs or links ?
They will need to be powered seperately I imagine ?

Thanks
  Reply With Quote
Old 26th February 2011, 07:55 PM   #10
diyAudio Member
 
Jim Shearer's Avatar
 
Join Date: Jun 2007
Quote:
Originally Posted by aptquark View Post
Heck of a build! Dave, what's the bottom end on those suckers?
I think that depends on the room and the amp. I built a pair of FE127e Fonken Primes. In my (13.5'x16') room connected to a 1972 vintage Sansui 4000 receiver, the SPL at 40 Hz is the same as at 200 Hz when played at moderate levels (85 dB peaks). Below 40 Hz it drops like a stone. I think Dave rates them as hitting 60 Hz--but he seems to like tubes and has (IIRC) a larger room. As always: YMMV.

Cheers, Jim
__________________
A day without music is like a day without food.
  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
New Fonken pair is born. Netlist Full Range 360 1st September 2013 08:21 PM
FS: A pair of Fonken speakers xecluded Swap Meet 4 12th July 2010 08:58 PM
one Fonken down, one to go... cjkpkg Full Range 7 25th September 2009 02:24 AM
fonken build mantisory Full Range 16 26th August 2008 04:39 AM


New To Site? Need Help?

All times are GMT. The time now is 01:44 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