fostex project start to finish - 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 9th November 2012, 02:26 AM   #1
diyAudio Member
 
Join Date: May 2012
Location: kingaroy
Default fostex project start to finish

Hello guys, I'm new here and have in the last year rediscovered my passion for building speakers. Many years ago i was involved in the car audio scene and became disillusioned with power being the goal and quality thrown out the window, My last car system i built after only 15minutes of listening i stopped the car and pulled the fuse in disgust, removed the subs and sold it off, no more doof doof.
Recently after visiting a friend and hearing his rather expensive home sound system it gave me a new direction to head in, so after reading many reviews of speakers and deciding the type of music i enjoy listening to i started building the fostex back loaded horn.
Once again being in my shed building with timber brought back what i enjoyed most about audio, for me its more about the construction of the boxes as well as the listening that gives me the most satisfaction, store bought speakers no matter how expensive don't do it for me.
The project took roughly 2 months as most of the time was spent waiting on materials to arrive and waiting for stock to come in (FE166 drivers)
My listening impressions of the speakers i have trouble verbalizing so i won't go into much detail, all i can say is i'm very impressed for the type of music i relax too and can't imagine needing the recommended super tweeter with my high quality tracks.
I changed the plans somewhat to my own taste but most is just cosmetic.
Thank you for looking and if you have any questions ask away, i enjoy sharing and talking about my new found passion.
  Reply With Quote
Old 9th November 2012, 02:33 AM   #2
diyAudio Member
 
Melo theory's Avatar
 
Join Date: Sep 2009
Location: Gulfport fl.
Ok, details? Pictures?
I'm always happy to hear about a new designer and builder.
__________________
I LIKE YOU
  Reply With Quote
Old 9th November 2012, 03:37 AM   #3
diyAudio Member
 
Join Date: May 2012
Location: kingaroy
pics are coming in order with a description of any issues/ changes/ ideas.
So here is the usual side shot, plywood was used as recommended as shown.
Click the image to open in full size.
  Reply With Quote
Old 9th November 2012, 03:44 AM   #4
diyAudio Member
 
Join Date: May 2012
Location: kingaroy
I'm struggling a little with the replies as it seems it all must be approved before posting, that's cool though i understand how much rubbish most forums attract.Please bear with me...
Click the image to open in full size.
Picture shows another angle and also you can see the saw i used for this project.The Makita mlt was fine once it was calibrated to cut straight, and although it's nothing like im used to it (my father used to own a cabinet making shop) seems to be good enough if you put in the time and effort.
  Reply With Quote
Old 9th November 2012, 03:52 AM   #5
diyAudio Member
 
Join Date: May 2012
Location: kingaroy
So here is the speaker boxes assembled starting to undergo the usual sand and bogging procedure. I realise that many people like ply wood to be left as the final finish once sanded with maybe some stain but this plywood quality wasn't a perfect surface so i took a different path.
The plywood thickness i used was 15mm for the inner panels and sides and back were 25mm.
I contemplated painting the whole speaker but after much consideration decided a paper backed veneer would give me the look i was after, with a vinyl wrapped face plate.
Click the image to open in full size.
  Reply With Quote
Old 9th November 2012, 04:05 AM   #6
diyAudio Member
 
Join Date: May 2012
Location: kingaroy
Here is the boxes after wrapping them in cherry paper backed veneer, test fitting my face plates.
You can see the sawdust still in the speaker mouth from using the router to trim the edges.
Click the image to open in full size.
  Reply With Quote
Old 9th November 2012, 04:17 AM   #7
diyAudio Member
 
Join Date: May 2012
Location: kingaroy
So here is where i tested small off cuts of veneer with various stains and top coat clears and decided to give the cherry some additional stain to create a colour i was happy with.The final coat of clear is a two part poly applied in 4 coats, very thick.
You can see i added the felt positioned behind the rear of the driver and also made up some grills to suit my taste, the open mouths of the horn looked to become a likely place for dust to gather so another good reason to make them.
The face plates wrapped in vinyl are held by stainless nutserts and stainless socket head cap screws sealed with small rubber o-rings. once you start using them it's hard to stop lol.
Underneath the face plate is a custom made rubber gasket.
Click the image to open in full size.
  Reply With Quote
Old 9th November 2012, 04:26 AM   #8
diyAudio Member
 
Join Date: May 2012
Location: kingaroy
So after finishing the inside throat of the horn with filler and primer is was coated in a satin black finish and several coats of clear.
The final fitting of speakers was done, tested termination of wires and took them inside to show the wife for final approval.lol Yes she was happy, well that's a start.
Time to take them into my upstairs media room im fitting out and test different filling/ angles/ settings..e.t.c to find a sound im happy with.
Click the image to open in full size.
  Reply With Quote
Old 9th November 2012, 04:30 AM   #9
diyAudio Member
 
Join Date: May 2012
Location: kingaroy
Speakers in place and ready to listen to some tracks, finding there weaknesses and strong points.
The most fun of it all!
Click the image to open in full size.
  Reply With Quote
Old 9th November 2012, 04:39 AM   #10
diyAudio Member
 
Join Date: May 2012
Location: kingaroy
Assorted pics of finished boxes. Speakers have roughly 60 hours on them in listening time and no issues so far.
Found that tracks from Michael Jackson seem to be there strong point funny enough as well as anything with a lot of vocals. Some jazz and orchestral also complement them.
The best so far is probably the track, "Thriller" ripped from his c.d to loss-less played through my Dac and small valve amp, probably the first time i've ever really heard how detailed the song is.lol
Can't wait to finish the room properly so it's much better acoustically for further testing.
Also awaiting some mono blocks to hear any difference that may make.
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

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
AMP7 start to finish luka Class D 33 6th June 2011 06:57 AM
Start to a finish. jaudio Chip Amps 18 28th September 2005 12:00 PM


New To Site? Need Help?

All times are GMT. The time now is 08:25 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