Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Planars & Exotics ESL's, planars, and alternative technologies

SLAM
SLAM
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 January 2018, 05:08 PM   #31
TNT is offline TNT  Sweden
diyAudio Member
 
Join Date: Apr 2003
Location: Sweden
Serious stuff!

Good luck!!

//
__________________
More distortion to the people!
  Reply With Quote
Old 8th January 2018, 09:25 PM   #32
solhaga is offline solhaga  Sweden
diyAudio Member
 
Join Date: Jun 2009
Location: Värsta Götaland
Eight segments mounted, that is nearly a quarter of a SLAM!

Click the image to open in full size.

Backside:

Click the image to open in full size.

It's looks so good, so good!
  Reply With Quote
Old 31st January 2018, 06:35 PM   #33
solhaga is offline solhaga  Sweden
diyAudio Member
 
Join Date: Jun 2009
Location: Värsta Götaland
Designed the tweeter membrane:

Click the image to open in full size.

60 mm high and 290 mm wide will with 36 pockets yield a 48x48 mm finished membrane.

The first successful cut:

Click the image to open in full size.

6.0 Ohm, a little bit more than the calculated 4.3 Ohm. But the return feeds, the horisontal parts, were not included in that calculation.

The motors are growing centimeter by centimeter:

Click the image to open in full size.

Weight is now a mere 12 kg, 50 cm high.
Only 30 cm to go!

The 3D printer is working 8 hours a day:

Click the image to open in full size.


Next step is to design a folding tool in nylon.
I have tested nylon and it seems to withstand 170 degrees Celsisus, at least for 20 minutes.
  Reply With Quote
Old 18th March 2018, 11:52 AM   #34
solhaga is offline solhaga  Sweden
diyAudio Member
 
Join Date: Jun 2009
Location: Värsta Götaland
It didn't turn out well with the nylon plates:

Click the image to open in full size.

But I found out that the kitchen oven "ovel shoot" when it comes to the temperature. It was actually over 240 degrees.

So I decided to build an oven out of two of these and some electronics:

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.

Then I tried poly carbonate at 160 degrees, but that was to hot as well:

Click the image to open in full size.

Another type of jigg:

Click the image to open in full size.

and a lower temperature, 140 degrees, did the trick:

Click the image to open in full size.
  Reply With Quote
Old 18th March 2018, 12:27 PM   #35
solhaga is offline solhaga  Sweden
diyAudio Member
 
Join Date: Jun 2009
Location: Värsta Götaland
To fold the whole membrane in the new jigg went well as did baking it.

But the printer wasn't happy about it when I tried to make prototypes of the membrane holder:

Front:

Click the image to open in full size.

Back:

Click the image to open in full size.

As the holder was to be made in a softer material called TPU with a shore of 95A, didn't the extrusion gear manage to feed the extruder.
So I needed to re-build the printer. Luckily, there's a forum for that as well..

Anyway, after a week or so I managed to get a suitable membrane holder:

Front:

Click the image to open in full size.

Back:

Click the image to open in full size.

So in with the membrane and prepare for gluing:

Click the image to open in full size.
  Reply With Quote
Old 18th March 2018, 12:30 PM   #36
TNT is offline TNT  Sweden
diyAudio Member
 
Join Date: Apr 2003
Location: Sweden
Need to rethink your pic posting strategies...?
Attached Images
File Type: png Untitled 7.png (153.3 KB, 23 views)
__________________
More distortion to the people!
  Reply With Quote
Old 18th March 2018, 12:59 PM   #37
solhaga is offline solhaga  Sweden
diyAudio Member
 
Join Date: Jun 2009
Location: Värsta Götaland
Quote:
Originally Posted by TNT View Post
Need to rethink your pic posting strategies...?
Everything (certificate, server, firewall) seems fine at my end.
Trouble shooting is ongoing...
  Reply With Quote
Old 18th March 2018, 03:53 PM   #38
solhaga is offline solhaga  Sweden
diyAudio Member
 
Join Date: Jun 2009
Location: Värsta Götaland
Seems to work now? I can now see the pictures on my phone.

Anyway. One tweeter mounted in SLAM!

Back:

Click the image to open in full size.

Click the image to open in full size.

Front:

Click the image to open in full size.

Click the image to open in full size.

Time to make some measurements...
  Reply With Quote
Old 18th March 2018, 05:40 PM   #39
solhaga is offline solhaga  Sweden
diyAudio Member
 
Join Date: Jun 2009
Location: Värsta Götaland
With one watt in and a sweep from 1000 Hz to 20 kHz I got:

At 25 cm:

Click the image to open in full size.

At 50 cm:

Click the image to open in full size.

At 100 cm (room starts to influence):

Click the image to open in full size.

All three:

Click the image to open in full size.

I think it looks good.
Nothing that points to a reconstruction of the membrane.

Next step is to make the terminals better
  Reply With Quote
Old 18th March 2018, 10:37 PM   #40
WrineX is offline WrineX  Netherlands
diyAudio Member
 
WrineX's Avatar
 
Join Date: Mar 2004
Location: Den Haag
HEej Solhaga you still use the 3m material ? or what did you use as membrane?
  Reply With Quote

Reply


SLAMHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Crown macro and studio reference amps: what's the secret of their slam ? elac310 The Lounge 247 11th October 2014 08:56 PM
Best slam and punch in the bass for hifi (not PA): TH with 15 OR 2x15 BR OR 1x18 BR? pk Subwoofers 29 8th July 2013 08:51 PM
SDX10 tips for slam? caper26 Subwoofers 8 14th June 2012 11:51 PM
Email Slam. jleaman Everything Else 5 18th December 2003 12:49 AM
Wilson Audio Grand Slam X1 - Clones Percy Erasmus Multi-Way 13 30th April 2002 01:50 AM


New To Site? Need Help?

All times are GMT. The time now is 08:05 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki