Tempest vented EBS subwoofer - Page 4 - diyAudio
Go Back   Home > Forums > Loudspeakers > Subwoofers

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 22nd October 2002, 08:17 PM   #31
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 BrianGT
If I have any problems, I will add more wood inside of it as Dave mentioned.
Make sure you add it before you put the finish wood on it. Also keep in mind that by adding mass to the panels you will lower the panel resonance modes and need the extra bracing even more.

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 22nd October 2002, 08:45 PM   #32
BrianGT is offline BrianGT  United States
diyAudio Moderator Emeritus
 
BrianGT's Avatar
 
Join Date: Jan 2002
Location: near Atlanta, GA
Send a message via AIM to BrianGT
I would do it now... but I don't have access to a table saw. I am planning on trying it out without the extra braces for now, and not finishing it with the extra birch yet. Then if I can find time in the next couple of weeks to get access to a table saw I will do it.

Will the stuffing help eliminate this problem? Should I put stuffing on the internal braces, or just the sides (I was planning on only the sides).

--
Brian
  Reply With Quote
Old 22nd October 2002, 09:01 PM   #33
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 BrianGT
Will the stuffing help eliminate this problem? Should I put stuffing on the internal braces, or just the sides (I was planning on only the sides).
No it won't -- it will only help kill higher freq stuff. I'd try some on the braces. Damping in the exact middle of a box is one of the most effective places for it.
__________________
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 25th October 2002, 04:05 AM   #34
BrianGT is offline BrianGT  United States
diyAudio Moderator Emeritus
 
BrianGT's Avatar
 
Join Date: Jan 2002
Location: near Atlanta, GA
Send a message via AIM to BrianGT
The sub is assembled (not finished yet), and I put it in my '98 honda civic hatchback (barely fits). I am driving it with a 360W rockford fosgate amp that i got 3 years ago.

The sub is loud... It shakes the crap out of my car. I have to get out of the car and turn it up with the remote control. It goes pretty low.

I got my 2 leach superamp boards fixed (skipped a jumper and one side was clipping way too early). I also tested my power supply. All that I need to do to it is assemble. It should put out around 500W into the 4ohm load with the bigger transformer.

I am not going to worry about the extra internal braces, as I am probably going to sell the sub to a friend and build another one... (a little smaller next time). I am satisified with the quality of the tempest vented enclosure in the car, and it probably isn't broken in yet. I had to dig out the ear plugs to bear the excessive bass that it puts out. I also couldn't find an available table saw.

I will post pictures on my website in a couple of days. I am finishing my Seas Thor TL speakers for the DIY2002 Atlanta show on saturday (almost done, just need to finish compounding them to get a nice smooth finish).

I have the box cut out for the mid-Q sealed tempest (a bit smaller then 2'x2'x2') and it has a similar mid brace. What is the best way to modify this sub before I put it together. I had an extra sheet of mdf at my friends, and I all of the pieces for the sub with it.

--
Brian
  Reply With Quote
Old 25th October 2002, 05:04 AM   #35
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 BrianGT
I am probably going to sell the sub to a friend and build another one...
Beauty. Watch out it could turn into a side job

Quote:
I have the box cut out for the mid-Q sealed tempest (a bit smaller then 2'x2'x2') and it has a similar mid brace. What is the best way to modify this sub before I put it together. I had an extra sheet of mdf at my friends, and I all of the pieces for the sub with it.
If you can divide the panels into unequal trapezoids (ie an angled brace). Use irrational numbers. For example you could place a brace at 1:1.4142 of the panel and then rotate it about its centre to create placement of an angled brace with a predominantly irrational placement.

Hope that makes sense -- i've been doing such things as 2nd nature for so long ...

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 25th October 2002, 06:24 AM   #36
BrianGT is offline BrianGT  United States
diyAudio Moderator Emeritus
 
BrianGT's Avatar
 
Join Date: Jan 2002
Location: near Atlanta, GA
Send a message via AIM to BrianGT
Dave,

I really appreciate your advice. I will definately consider it before I start the sealed tempest.

Here is a pic of the sub now. The main baffle is flush except for the speaker jack, because i didn't take the time to make a square countersink hole. I will add the 1/4" birch to the sides next.

--
Brian
Attached Images
File Type: jpg aao.sized.jpg (50.9 KB, 144 views)
  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
Exodus Tempest-X 15" Driver / Subwoofer mp006ltk Swap Meet 1 22nd February 2009 09:46 PM
New CSS SD12 Vented Subwoofer Timn8ter Subwoofers 9 31st January 2007 09:02 PM
Diy amp to power tempest subwoofer postman Chip Amps 7 30th March 2004 04:30 PM
FS: Adire Audio Tempest EBS subwoofer BrianGT Swap Meet 6 21st July 2003 01:15 PM
Tempest subwoofer for sale (Adire alignment) Darren_T Swap Meet 3 3rd April 2003 06:49 PM


New To Site? Need Help?

All times are GMT. The time now is 06:44 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