Tempest vented EBS subwoofer

BrianGT · 19th October 2002, 07:17 PM

I started my tempest EBS enclosure for my sub. It is built to the design on adire audio's website:

http://www.adireaudio.com/tech_papers/tempest_apps.htm

It is the vented ebs subwoofer. It is quite large and will be 4' tall with the feet on it and 2' x 2'. 320L volume

I haven't finished it yet. I am waiting for the polyfil that I ordered and I still need to caulk the inside corners. Even though the top is not screwed down and the driver and ports are not yet mounted, it sounds quite good with my leach amp driving it with my denon digital decoder acting as a low pass filter.

I will eventually cover it with 1/4" baltic birch on all sides.

It will be downfiring when it is finished.

--
Brian

BrianGT · 19th October 2002, 07:20 PM

another pictures:

--
Brian

BrianGT · 19th October 2002, 07:25 PM

picture of tempest 15" driver

jag · 19th October 2002, 07:53 PM

Looks pretty good so far. I am hoping to build a shiva suit someday.

Are you not required to make the driver flush with baffle for subwoofers?

BrianGT · 19th October 2002, 08:18 PM

When I cover the entire sub with 1/4" birch, it will make the bottom more flush. the sub sticks up 3/4" over the bottom including the foam part on the woofer. If you disregard the foam part, the metal part only sticks up 1/4" off the bottom. I am thinking of putting more 3/4" birch on the bottom instead of 1/4" and making it more flush.

Is it worth the effort? Will it effect the sonics for a sub?

--
Brian

BrianGT · 19th October 2002, 08:20 PM

Here is a picture of a tempest sub with a flush driver:

from:
http://my.starstream.net/mk/tempest_...es/181_jpg.htm

Is this much better?

--
Brian

planet10 · 19th October 2002, 10:06 PM

Brian,

Are the braces down the middle of the panel or offset just a bit?

dave

jleaman · 19th October 2002, 11:38 PM

brian as i browse your webpage i see your enclosure for your sub WHY is the box so huge. it is like 4 feet tal buy 2 feet wide each side.. that thing is huge.

BrianGT · 20th October 2002, 01:57 AM

The braces are directly down the middle. One is a little bit off center due to the way that I screwed the brace to the outside piece before I put it together.

I wanted a big box because it looked best in lspcad:

--
Brian

BrianGT · 20th October 2002, 02:00 AM

JasonL:

I also figured what the hell... I am building my own sub, and don't have to worry about the wife acceptance factor for this... so why not build the one that looks to be the best... I was going to build a smaller sub that was almost 2'x2'x2' but I figured that this one takes up the same floor space but is twice as tall...

--
Brian

19th October 2002, 07:17 PM	#1
BrianGT diyAudio Moderator Emeritus Join Date: Jan 2002 Location: near Atlanta, GA	Tempest vented EBS subwoofer I started my tempest EBS enclosure for my sub. It is built to the design on adire audio's website: http://www.adireaudio.com/tech_papers/tempest_apps.htm It is the vented ebs subwoofer. It is quite large and will be 4' tall with the feet on it and 2' x 2'. 320L volume I haven't finished it yet. I am waiting for the polyfil that I ordered and I still need to caulk the inside corners. Even though the top is not screwed down and the driver and ports are not yet mounted, it sounds quite good with my leach amp driving it with my denon digital decoder acting as a low pass filter. I will eventually cover it with 1/4" baltic birch on all sides. It will be downfiring when it is finished. -- Brian

19th October 2002, 10:06 PM	#7
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	Brian, Are the braces down the middle of the panel or offset just a bit? dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

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19th October 2002, 07:53 PM	#4
jag diyAudio Member Join Date: Aug 2002 Location: TX	Looks pretty good so far. I am hoping to build a shiva suit someday. Are you not required to make the driver flush with baffle for subwoofers?

19th October 2002, 08:18 PM	#5
BrianGT diyAudio Moderator Emeritus Join Date: Jan 2002 Location: near Atlanta, GA	When I cover the entire sub with 1/4" birch, it will make the bottom more flush. the sub sticks up 3/4" over the bottom including the foam part on the woofer. If you disregard the foam part, the metal part only sticks up 1/4" off the bottom. I am thinking of putting more 3/4" birch on the bottom instead of 1/4" and making it more flush. Is it worth the effort? Will it effect the sonics for a sub? -- Brian

19th October 2002, 08:20 PM	#6
BrianGT diyAudio Moderator Emeritus Join Date: Jan 2002 Location: near Atlanta, GA	Here is a picture of a tempest sub with a flush driver: from: http://my.starstream.net/mk/tempest_...es/181_jpg.htm Is this much better? -- Brian

19th October 2002, 11:38 PM	#8
jleaman Banned Join Date: Apr 2002	brian as i browse your webpage i see your enclosure for your sub WHY is the box so huge. it is like 4 feet tal buy 2 feet wide each side.. that thing is huge.

20th October 2002, 02:00 AM	#10
BrianGT diyAudio Moderator Emeritus Join Date: Jan 2002 Location: near Atlanta, GA	JasonL: I also figured what the hell... I am building my own sub, and don't have to worry about the wife acceptance factor for this... so why not build the one that looks to be the best... I was going to build a smaller sub that was almost 2'x2'x2' but I figured that this one takes up the same floor space but is twice as tall... -- Brian

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