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What tune for 9 cu ft tempest enclosure? (1 Viewer)

JohnA

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Oct 25, 1999
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Any suggestions on what to tune a 9 cubic foot tempest enclosure to?

This will be a ported enclosure to compliment my 5 cu. ft. sealed maelstrom that is just about complete.

Thanks

-JohnA
 

Dustin B

Senior HTF Member
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Mar 10, 2001
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My 260L Tempest is tuned somewhere between 16 and 17hz and I have no complaints. Anywhere between 16-18hz should be fine.
 

ThomasW

Senior HTF Member
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Nov 6, 1999
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Why would you bother with building a huge box for a Tempest when you already have the Maelstrom?????
 

JohnA

Stunt Coordinator
Joined
Oct 25, 1999
Messages
98
Dustin

Thanks for your input.

Thomas

I enjoyed designing and building the sealed Maelstrom and would like to have a try at a ported sub that is a little more affordable.

Will I need another subwoofer with the Maelstrom? I don't know. The room is part of an open concept floor plan that measures around 5800 cu. ft. The only thing left to complete the Maelstrom is installing the driver in the enclosure (which I hope to do this weekend).

Should the Tempest prove to be overkill, it can always be used in a room being comlpeted in my basement (2600 cu. ft.)

Your Klone Audio site has proven a great resource and inspiration. The "AS-15" Aerial Stryke sub being a benchmark for me.


-JohnA
 

ThomasW

Senior HTF Member
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Nov 6, 1999
Messages
2,282
Hi

Glad the website is helpful.

To my way of thinking the Tempest wouldn't be needed given the output from the Maelstrom.

Also you may run into some weird cancelation issues having two subs in different locations.
 

CarlDais

Stunt Coordinator
Joined
Sep 24, 2000
Messages
56
To my way of thinking the Tempest wouldn't be needed given the output from the Maelstrom.
I've been wondering about the application of the 18" maelstrom. It's a more efficient driver with more capablity above 30Hz compared to the Tempest. While the 15" Tempest has the Low frequency advantage. I wish Adair would load the T/S parameters into their inhouse LpScd.

I am deciding on a Tempest IB set-up. Or a Maelstrom IB.
A multi-driver mainifold similar to Thomas W's smaller Shiva project and
Rich Kraus 2 tempest. The drivers back wave will vent to the Garage. The Throat will be a 14X20 Airconditioner return air vent. The entrance into the room will be near the ceiling above the Left speaker about 3 feet from the corner. An X-30 will be the active x-over. A Rane PE-17 is available for EQ. Power can be anything from 130 watts up to 500 watts.



Thoughts anyone?
 

JohnA

Stunt Coordinator
Joined
Oct 25, 1999
Messages
98
Thomas

As far as cancellation issues from mulitple subs, I currently have a Definitive Technologies Powerfield1500. It sounds like I should place the subs in the same place or try my set up without the DF 1500 at first.


Carl

Adire updated LSPcad with the Maelstrom driver many months ago. Just download the latest version and the driver is there.

-JohnA
 

Dustin B

Senior HTF Member
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Mar 10, 2001
Messages
3,126
Everything I've read says the Tempest is a better choice for an IB than a Maelstrom.
 

ThomasW

Senior HTF Member
Joined
Nov 6, 1999
Messages
2,282
Carl

For IB subs the Qts of the driver ends up being the Qtc of the system. The Maelstrom has a Qts of 0.28. IMO thats going to be way overdamped for an IB. I'd suggest using drivers with a higher Qts.
 

CarlDais

Stunt Coordinator
Joined
Sep 24, 2000
Messages
56
Thanks John A....I guess it'd help if I would log on more often and check the site.

Dustin & Thomas....thanks. That's what I thought.
The tempest's higher Qts & lower Fs make it a better
choice for IB installs.

Time to get off the fence & cut some drywall.
 
Joined
Mar 17, 2003
Messages
32
Im sure someone out there needs a nice center channel that directly matches their C-3 Mains, heck it would be a really good alternative for those with C-9s looking for a good cheap center channel. Just flip it down and angle it down on top of a TV. -Chris-
 

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