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 10th September 2011, 10:04 PM   #1
joe58 is offline joe58  United Kingdom
diyAudio Member
 
Join Date: Dec 2009
Location: England
Default Sphere modular system build thread

This will be my long term build thread for my spheres in the form the IKEA Blanda. However it will be a modular system, as over time I will keep adding and adding to it to make it a multiway plus extras style system. The stands have been made in order to hang extra units on over time, giving me something to build with the excuse of making the system better instead of having just loads of random speakers. The first module to go on is the medium bowl and my fe103e’s. These I’ve feel have never ‘reached’ my subwoofer, whose top crossover is 85hz. Therefore here’s a list of what I hope to hang from the ‘pole.’
• Speaker floor spikes etc, cables to sub.
• A large bowl containing a 5 inch woofer to bridge the gap and add some much needed ‘insert audio term here’ to the upper LF’s.
• This of course is going to need a crossover, so a small flat box in the same shape as the base
• Rebuild the stands using aluminium/ steel poles (hollow to run the cables down) and high thickness Perspex for the bases and also the arms that hold the sphere’s.
• Tweeters (already have one to play with) or supertweeter (extended future), who knows, an excuse to build something.
• Possibly the largest metal Blanda bowls for multiple subwoofer set up.(very extended future)

Images below are the first spheres. Decided to add an extra circle of wood to the front as the drives don’t have a round chassis, plus I wanted extra strength. Therefore that left an angle gap between the two surfaces, so I’ve had to fill it in... The port is the best I could do as I wanted some ‘trumpet’, so they had to be smoothed into the wood, as well as the joins between the spacer and bowls.

Click the image to open in full size.
First cuts by Simply_Ginniff, on Flickr
Click the image to open in full size.
Glueing by Simply_Ginniff, on Flickr
Click the image to open in full size.
Experimenting for the grilles by Simply_Ginniff, on Flickr
Click the image to open in full size.
Cutting out rear port. by Simply_Ginniff, on Flickr
Click the image to open in full size.
Rear port and smoothing. by Simply_Ginniff, on Flickr

The stands are relatively simple: two pieces of 18mm ply screwed and glued together. Then a very solid piece of broom handle screwed and glued again. The whole thing is extremely solid and I could barley drill through the pole it was that dense. Great! Then a simple similar shaped arm is then cut out form 18mm ply and screwed on.

Click the image to open in full size.
Base of stand. by Simply_Ginniff, on Flickr
Click the image to open in full size.
The stand in progress. by Simply_Ginniff, on Flickr

The colour of the first bowls is a copper, inspired by one of my favourite yachts I managed to see on holiday: Tiketitoo. No idea about the stands yet and I don’t have long to decide, never mind do them.

Click the image to open in full size.
DSCN1086 by Simply_Ginniff, on Flickr

Over time is a quick mock up Google sketch up model of what hopefully it will start to look like over time, with more 'stuff' being added.

Click the image to open in full size.
speaker mock up by Simply_Ginniff, on Flickr

That'll do for now, thanks for reading
  Reply With Quote
Old 11th September 2011, 12:54 AM   #2
diyAudio Member
 
DYNABLASTERTUNERS's Avatar
 
Join Date: Nov 2009
Location: Cyberia
superb!
__________________
some of my Designs www.dynablaster.deviantart.com/gallery
  Reply With Quote
Old 11th September 2011, 01:15 AM   #3
diyAudio Member
 
norman bates's Avatar
 
Join Date: Nov 2003
Location: iowa
nice boat.
  Reply With Quote
Old 11th September 2011, 07:26 AM   #4
andb is offline andb  Czech Republic
diyAudio Member
 
Join Date: Nov 2008
Location: Prague
Unless you plan to bolt that base to the floor, I can't even begin tell you how unstable that is going to be. A stiff breeze, nevermind a dog or visiting child, will send it falling like the tower of Babel. Either make the stands MUCH wider and out of stone or sand filled boxes with far stronger supports, or run a support wire up to the roof.

I dropped one of those Ikea bowls once, fortunately not with a driver in it, and is shattered almost like glass. I ended up using a normal cabinet from 18mm birch plywood in the end, far more rigid.
  Reply With Quote
Old 11th September 2011, 07:58 AM   #5
joe58 is offline joe58  United Kingdom
diyAudio Member
 
Join Date: Dec 2009
Location: England
Yes probably will be. I will experiment and build some outriggers.
  Reply With Quote
Old 22nd September 2011, 07:25 AM   #6
joe58 is offline joe58  United Kingdom
diyAudio Member
 
Join Date: Dec 2009
Location: England
Currently experimenting with the base coats to get a smooth finish as they were slight pits/ bumps around the joins and either end. Will obviously still need sanding down.

Click the image to open in full size.
Overview of new basecoat by Simply_Ginniff, on Flickr

Click the image to open in full size.
Another overview of the new basecoat by Simply_Ginniff, on Flickr
  Reply With Quote
Old 22nd September 2011, 10:44 PM   #7
joe58 is offline joe58  United Kingdom
diyAudio Member
 
Join Date: Dec 2009
Location: England
2 hours of sanding resulted in this. Primer tomorrow and the the copper-chrome if it all goes well. The a whole other sphere to do and then the stands.

Click the image to open in full size.
Finished sanding to get my smooth surface. by Simply_Ginniff, on Flickr

Click the image to open in full size.
Rear after sanding by Simply_Ginniff, on Flickr
  Reply With Quote
Old 25th September 2011, 08:28 PM   #8
joe58 is offline joe58  United Kingdom
diyAudio Member
 
Join Date: Dec 2009
Location: England
Some more progress. First of all the primer was applied:

Click the image to open in full size.
Primer on by Simply_Ginniff, on Flickr

Click the image to open in full size.
Primer on by Simply_Ginniff, on Flickr

And then the copper. I realise I have used a colour which needs a very good surface and is hard to paint with, so there are some imperfections(I'm picky, but so you should be else you will never improve). However there will be a matte varnish to be applied, which hopefully will help. Anyone have any suggestions to further help the paint?

Click the image to open in full size.
Damn finger prints by Simply_Ginniff, on Flickr

Click the image to open in full size.
Yes there's a few imperfections.. by Simply_Ginniff, on Flickr
  Reply With Quote
Old 25th September 2011, 10:14 PM   #9
diyAudio Member
 
barackuda's Avatar
 
Join Date: Oct 2006
Quote:
Originally Posted by joe58 View Post
Anyone have any suggestions to further help the paint?
Yes
more primer and more sanding until mirror shine

Last edited by barackuda; 25th September 2011 at 10:17 PM.
  Reply With Quote
Old 25th September 2011, 10:56 PM   #10
joe58 is offline joe58  United Kingdom
diyAudio Member
 
Join Date: Dec 2009
Location: England
Quote:
Originally Posted by barackuda View Post
Yes
more primer and more sanding until mirror shine
What grade sand paper would remove the scratches?
  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
The Official Turntable Drive System/Motor Thread! gtyler Analogue Source 126 15th September 2013 07:27 AM
Build Thread: OBEOS Tytte71 Multi-Way 15 1st October 2011 06:02 PM
New Saburo Build thread Wha' DIYa know? Full Range 94 17th October 2010 04:49 PM
The ESL Build Thread BillH Planars & Exotics 172 8th November 2006 09:01 PM
Help with old thread on system pictures dumrum Multi-Way 0 18th October 2004 07:39 AM


New To Site? Need Help?

All times are GMT. The time now is 08:06 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