Fat ufonken build - 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 6th November 2009, 04:32 PM   #1
diyAudio Member
 
jpbturbo's Avatar
 
Join Date: Sep 2009
Location: The High Country
Default Fat ufonken build

Last night I started building a set of Micro Fonkens out of some 3/4" solid pine that I had sitting around, an old shelf in my garage actually that had a split at one end.
3/4" makes the design a bit fatter looking than normal.
I've altered some of the dimensions slightly so as to keep the internal volume and port volume as close to the original as possible.

The biggest potential problem though is that I don't have any FF85K
For now I'll be using some H/K drivers out of my computer speakers.
At the least it will give me something better looking to sit on my desk at work, and it just might sound better than the plastic cabs.


Here are the (horrible cell phone) pics of what I have so far.

Click the image to open in full size.
The plans taped up on the wall for easy viewing.

Click the image to open in full size.
I clamped a board on the side of the radial arm saw so that it was easy to get all the side, front, and back pieces the same height.

Click the image to open in full size.
This was the first time I had ever tried to cut a circle with my router.
I made a jig that the motorboard rotated around that allowed me to get some nice neat circles cut out.

Click the image to open in full size.
Some of the pieces sitting around.

Click the image to open in full size.
Part of the first one getting glued and clamped.


Peace,
Josh
__________________
...sword and pistol by his side.
  Reply With Quote
Old 6th November 2009, 04:41 PM   #2
kevinkr is offline kevinkr  United States
diyAudio Moderator
 
kevinkr's Avatar
 
Join Date: Sep 2004
Location: Boston, Massachusetts
Blog Entries: 6
Cool, keep those pictures coming.. I tell myself once in a while that I really ought to be making some decent computer speakers to replace the cambridge soundworks 3 piece system I currently have..
__________________
"Extraordinary claims require extraordinary evidence." - Carl Sagan
  Reply With Quote
Old 6th November 2009, 07:54 PM   #3
diyAudio Member
 
chuyler1's Avatar
 
Join Date: Feb 2006
Location: Massachusetts
I think I have those same Cambridge soundworks speakers. I built a set of these a few months ago and they get heavy use connected to our bedroom TV. Occasionally I bring them into my office when I'm working from home. I like them so much I am building a second set as a wedding gift for a friend.
  Reply With Quote
Old 6th November 2009, 08:12 PM   #4
diyAudio Member
 
jpbturbo's Avatar
 
Join Date: Sep 2009
Location: The High Country
That's what I've been thinking about.

My brother in law is getting married next july and I was thinking about building a set(with proper wood and drivers) and maybe a small sub and a chip amp.

-Josh
__________________
...sword and pistol by his side.
  Reply With Quote
Old 6th November 2009, 08:35 PM   #5
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 jpbturbo View Post
Last night I started building a set of Micro Fonkens out of some 3/4" solid pine that I had sitting around... 3/4" makes the design a bit fatter looking than normal.
It will allow a wider champher at the edge...

How are you going to work the holey brace so that you can swap to the proper drivers in the future.

Installing the HK, into a box for the FF85 is a bit of a crap=shhot, hopefully they turn out tolerable

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 6th November 2009, 09:09 PM   #6
diyAudio Member
 
jpbturbo's Avatar
 
Join Date: Sep 2009
Location: The High Country
Quote:
Originally Posted by planet10 View Post
It will allow a wider champher at the edge...

How are you going to work the holey brace so that you can swap to the proper drivers in the future.
I'll size it so that it works with the HK driver.
Than when it comes time for the FF85 if the brace is too large I'll carve it back a bit with a 1/2" router bit, if it's not large enough I'll build it up with another strip of pine glued on.

Quote:
Originally Posted by planet10
Installing the HK, into a box for the FF85 is a bit of a crap-shoot, hopefully they turn out tolerable

dave
Yep, hoping for the best but not expecting too much.

About the chamfer, would it hurt drastically to round the edges of the chamfer a little bit or should they stay fairly sharp?


Thanks,
Josh
__________________
...sword and pistol by his side.
  Reply With Quote
Old 6th November 2009, 09:41 PM   #7
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
smoothing the edges of the champher would not hurt. Our builds are sharp to make them easier to veneer.

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 9th November 2009, 01:20 PM   #8
diyAudio Member
 
jpbturbo's Avatar
 
Join Date: Sep 2009
Location: The High Country
Default More Pics

Update with some more crummy pictures.

More clamping and glueing,
Click the image to open in full size.

The work shop,
a big step up over my previous setup which was a borrowed table saw in my driveway.
So far my most expensive tool is the Bosch Jigsaw for which I paid $89 USD.
I love craigslist.
Click the image to open in full size.

A preliminary test without the top and bottom glued on.
And my new Lenovo T500
Click the image to open in full size.

Left,
Click the image to open in full size.

Right,
Click the image to open in full size.

Still to come,
Cutting the front chamfer, Mucho sanding, finishing.
I'm probably going to use a cherry poly finish on them.

Oh yeah,
They sounded pretty good.
Fairly weak in the lower frequencies.
Not really expecting much there.
They imaged much better than expected, probably in part to having them hooked up to a "real" amplifier.
I can't imaging the stock unit built in as being that great.

So, anybody recommend a chip amp to build?
I'm decent enough with a soldering iron although I'm not that up on electronics but I can follow directions

Peace,
Josh
__________________
...sword and pistol by his side.
  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
uFonken flat-paks planet10 Planet 10 hifi 15 11th May 2011 07:51 AM
uFonken speaker cabinet: Design question underwurlde Full Range 30 14th October 2009 04:11 PM
build my first full ranger,let's build another one:a small fullrange high end pc-spea then_dude Full Range 2 30th November 2005 07:54 AM
Do i need to build main supply (240v) filter?Or build power distribution? thomgun_lc Chip Amps 9 16th September 2005 09:52 AM
X-Over... Can I Pay someone to build a X-Over. Intelonetwo Multi-Way 0 13th August 2003 01:22 AM


New To Site? Need Help?

All times are GMT. The time now is 10:52 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