How to shield a tempest?

Aaron_Morris · 10-05-2003, 10:40 PM

I am looking to put a tempest in an enclosure directly below my TV. How would I go about magnetically shield the enclosure? I am figuring a bucking magnet and maybe some sheet metal on the top of the enclosure. What size magnet would I need?

Thanks for the input guys.

ThomasW · 10-05-2003, 11:02 PM

The bucking magnet should be no larger than 50% of the weight of the original magnet on the driver.

Line the ALL interior surfaces of the cab with the thickest sheet metal you can find.

On occasion we've done a double walled cab with sheet metal layer between the two layers of MDF/plywood, then a second layer of metal covering all the internal surfaces of the cab.

Frank Carter · 10-05-2003, 11:12 PM

Where can one find sheet metal to do this?

ThomasW · 10-05-2003, 11:15 PM

yellow pages..

John_MackieBass · 10-06-2003, 01:19 AM

OMG...that box is gonna weigh SOOOO much!!!

**HTF Ads**

David Giesbrecht · 10-06-2003, 01:58 AM

Weight works in your favour, that box isn't go'n nowhere

Brian-Nu · 10-06-2003, 02:04 AM

How are you gonna lift it?

John_MackieBass · 10-06-2003, 11:45 AM

crane

I'm not one to complain...mine weighs 200lbs!!! Although the driver is a solid 57lbs :b

Anthony_I · 10-06-2003, 02:24 PM

The good thing about weight..... if someone robs your house, your sub aint goin nowhere

lol

Chris Tsutsui · 10-06-2003, 05:58 PM

As for the sheet metal, make sure it is ferromagnetic. If you use aluminum or stainless steel, it ain't gonna do anything for your shielding. You need something with iron... such as steel. (Rust is an indicator that it'll work)

A bucking magnet, plus lining the inner cabinet with some sheet metal would work fine. I think 12ga would be the absolute thickest. The distance from the magnet to the tv matters as well.

Richard Little · 10-06-2003, 06:44 PM

Quote:

The good thing about weight..... if someone robs your house, your sub aint goin nowhere lol

or maybe you'll find a couple of robbers with thrown backs, laid out on the floor.

I wonder how close is to close for tempest or AV15's in just normal enclosures.

John_MackieBass · 10-06-2003, 09:59 PM

omg, if someone was going to rob me that box would be the LAST thing they'd get!!! They would lift up on the front and say "screw it i'm taking the VCR"

Bucking magnets...is that just a magnet attached to the back side of the speaker to negate the magnetic field of the speaker?