Ceramic speaker enclosures - Page 3 - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way

Multi-Way Conventional loudspeakers with crossovers

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 25th February 2010, 03:38 PM   #21
diyAudio Member
 
Josephjcole's Avatar
 
Join Date: Jun 2004
Location: Wisconsin
Few, interesting looking material. Good food for thought, certainly interesting reading. With these small ceramic enclosures I don't for see any trouble with ringing in the enclosures. To be honest I made a ceramic speaker enclosure, maybe 2004? At the time though my understanding of speaker design was pretty poor and, I did not own my own kiln. The experiment was short lived. However I did not have any problems with ringing of the cabinet.
Keriwena, thanks for the link I have seen the Norh cabinets before. They certainly are attractive cabinets. It's interesting they did not do more to reduce diffraction on the front baffles. Maybe they just had a price point to meet? I appriciate the link though.
I'll probably go ahead and throw the main section of the cabinets today or tomorrow. Thanks for all the advice.
Sorry to start another MDF vs Plywood debate....
Joe
  Reply With Quote
Old 26th February 2010, 03:10 AM   #22
Few is offline Few  United States
diyAudio Member
 
Join Date: Apr 2004
Location: Maine, USA
Quote:
Sorry to start another MDF vs Plywood debate
It's definitely not your fault. I'll leave it at that.

I think your ceramic enclosures will be very cool---I looked into making some myself a few years ago but didn't have ready access to a kiln, and definitely don't have your experience with the material. I look forward to seeing your finished products.

On the resonance issue: If you were to knock on one of the ceramic enclosures you don't think it would ring? Most ceramic vessels I've encountered have pretty high Q (weakly damped) resonances but you obviously know more about the ceramics you're making than I do! Just to be clear, I'm referring to vibrations of the ceramic walls not resonances of the air in the enclosure.

Few
  Reply With Quote
Old 26th February 2010, 05:43 AM   #23
diyAudio Member
 
Josephjcole's Avatar
 
Join Date: Jun 2004
Location: Wisconsin
Quote:
Originally Posted by Few View Post

On the resonance issue: If you were to knock on one of the ceramic enclosures you don't think it would ring? Most ceramic vessels I've encountered have pretty high Q (weakly damped) resonances but you obviously know more about the ceramics you're making than I do! Just to be clear, I'm referring to vibrations of the ceramic walls not resonances of the air in the enclosure.

Few
Well I certainly wouldn't say that it would not ring at all. However our pots don't ring like the commercial porcelain. Commercial porcelain will give a sustained ring when you knock on it. Our pots do make a high pitched noise when you knock on it with your knuckle, but there is no duration to the ring. I'm thinking gluing the baffle on with something like liquid nails will help to dampen the ringing even further. What comes to mind is how you can hold a bowl by it's foot and knock on it it can ring a bell, however if you hold the bowl by the rim there is no ringing what so ever..... that's my hope at least. We'll see.
Joe
  Reply With Quote
Old 26th February 2010, 07:32 AM   #24
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 Josephjcole View Post
Our pots do make a high pitched noise when you knock on it with your knuckle, but there is no duration to the ring.
Higbh pitch is good... that its duration is short means that the energy is quicky dissipated.

Unlikely to get excited from the inside by the driver.

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 27th February 2010, 01:30 AM   #25
diyAudio Member
 
Josephjcole's Avatar
 
Join Date: Jun 2004
Location: Wisconsin
Well I took a little time after work today to give a try at the enclosures for the Fostex driver. I made them a little shorter than I had drawn before. I didn't get them quite perfect. It's always a little bit difficult to get a new shape quite right. I'll give another try tomorrow evening. I think I like the one on the right best.
I did make them quite thick. They weight around 20lbs each right now, obviously they will loose weight as they dry out, but for their size they are about twice as thick as I would normally make. I think they should be pretty solid, with out any ringing after they are fired.
Joe

oh, in case it's not obvious they are sitting on their "heads" as it were. I'll add feet after they dry our a bit.
Attached Images
File Type: jpg IMG_0530.JPG (292.1 KB, 319 views)
  Reply With Quote
Old 27th February 2010, 01:34 AM   #26
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Looks good... just realized i have a smaller version of those in the bathroom holding some dried flowers

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 28th February 2010, 04:27 PM   #27
Few is offline Few  United States
diyAudio Member
 
Join Date: Apr 2004
Location: Maine, USA
Looks really great Joe. How long will it take you to take them through the whole glazing(?) firing process?
Few
  Reply With Quote
Old 1st March 2010, 04:13 AM   #28
diyAudio Member
 
Josephjcole's Avatar
 
Join Date: Jun 2004
Location: Wisconsin
Quote:
Originally Posted by Few View Post
Looks really great Joe. How long will it take you to take them through the whole glazing(?) firing process?
Few
Our firing is scheduled to start March 17 and finish up sometime on the 19th. We'll probably unload the kiln the 21st. I'll post pictures of the fostex and tangband enclosures before they go in the kiln.
Joe
  Reply With Quote
Old 3rd March 2010, 02:54 AM   #29
diyAudio Member
 
mondogenerator's Avatar
 
Join Date: Sep 2009
Location: City Of Villans
Blog Entries: 1
Quote:
Originally Posted by Josephjcole View Post
Well I took a little time after work today to give a try at the enclosures for the Fostex driver. I made them a little shorter than I had drawn before. I didn't get them quite perfect. It's always a little bit difficult to get a new shape quite right. I'll give another try tomorrow evening. I think I like the one on the right best.
I did make them quite thick. They weight around 20lbs each right now, obviously they will loose weight as they dry out, but for their size they are about twice as thick as I would normally make. I think they should be pretty solid, with out any ringing after they are fired.
Joe

oh, in case it's not obvious they are sitting on their "heads" as it were. I'll add feet after they dry our a bit.

lol nice pots!!!hopefully wont ring too much , given as theyre very thick looking! The only thing that would worry me would be when the driver gioes in and you tighten the screws/bolts, and try not to destroy the pot in the process...you COULD glue i spose...If that would be sufficient and you dont mind having to break them to get back in, should you need to....


as a potter, do YOU have any ideas how i could cut a pot such as those, vertically down the centre?

Anglegrinder???

then i could reattach the halves with silicone sealer........

and to all:

sorry about going off topic.

cant stand ppl slating MDF, when its perfectly good for applications as long as you are aware of the disadvatnages and design around them, as with any material.
the ONLY material that COULD be perfect would be a composite. end of story. maybe ceramic interior, with a foam or air gap between that and a wooden/MDF/PLY/nylon exterior...
__________________
Every new piece of knowledge pushes something else out of my brain - Homer.....................Simpson

Last edited by mondogenerator; 3rd March 2010 at 03:06 AM.
  Reply With Quote
Old 3rd March 2010, 05:10 AM   #30
diyAudio Member
 
Josephjcole's Avatar
 
Join Date: Jun 2004
Location: Wisconsin
Quote:
Originally Posted by mondogenerator View Post
lol nice pots!!!hopefully wont ring too much , given as theyre very thick looking! The only thing that would worry me would be when the driver gioes in and you tighten the screws/bolts, and try not to destroy the pot in the process...you COULD glue i spose...If that would be sufficient and you dont mind having to break them to get back in, should you need to....


as a potter, do YOU have any ideas how i could cut a pot such as those, vertically down the centre?

Anglegrinder???

then i could reattach the halves with silicone sealer........
mondogenerator
I'm planning on glueing on a wooden front baffle then screwing the drivers to that. I'm not brave enough to glue my drivers in place

As far as cutting a ceramic vase or jar in half..... might be difficult. The best way to do it is if you know somebody with a brick saw. These use a diamond blade and spray water on the blade to keep it from heating up. Assuming you don't know anybody with a brick saw, you'll need a diamond blade of some type. Probably an angle grinder. I would cut a little and then let the pot cool back down. The biggest danger is the pot cracking from thermal shock. To be honest you'll probably break a few before you get it right. Might be easier to find a potter to cut one in half before it's fired. I would make on for you and send it your way, but you would probably be best finding somebody on your side of the Atlantic. Shipping would probably be a bear.
Joe
  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
SPEAKER ENCLOSURES in Az boxcustom Multi-Way 2 10th August 2008 11:18 PM
Speaker Enclosures FrankRoss Multi-Way 3 13th September 2006 09:54 PM
Ceramic/Eton Transmissionline speaker Jan Deckers Multi-Way 7 13th August 2004 11:07 PM
Speaker enclosures. pixie Multi-Way 5 31st January 2003 01:33 PM
Ceramic Speaker enclosures bostarob Multi-Way 20 26th May 2002 05:13 PM


New To Site? Need Help?

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