2. misc-audio
  3. 1242235308

How do you shield an isolation transformer?

I have a Topaz 2.5 Kva Ultra Isolation Transformer. It has to sit in my 10' x 12' listening room behind my equipment.

It's not real close to the speakers since I have them sitting over 6' into the room in a nearfield listening setup.

I was told that the transformer generates a magnetic field that should be shielded and kept away from my equipment. How do I do this, and is there a way to do whatever so that it looks halfway decent?

Thanks,
Chuck
krell_man

Showing 2 responses by darkmoebius

darkmoebius
900 posts
 
I own 6 of these iso-trannis and never noticed any negative effect in a low power SET/high(ish) efficiency system.

But if there turns out to be a problem, simple to a search for "mu-metal" and either buy a mu bag or ox to place over the Topaz. Mu-Metal was created specifically to block stray magnetic fields from motors, magnets, transformers, etc.

Check with Mapman here on Audiogon, I recommended he use some for hum he was getting whenever his phono stepup amp was near other components. It solved the problem for a just a few bucks

The EMF Safety Superstore sells several different types of Mu-Metal or equivalent shielding products from $2.50 per linear foot to super expensive. I'm sure they could recommend just thing you need.

Gauss Meter sells minimum orders of 3 ft @ $24 per. (half-way down page)
darkmoebius
900 posts
 
Zargon gave the best answer, I totally forgot about the internal shields. I actually wired mine for balanced power and better noise cancellation.
More to discover