Advice- wiring for dedicated sound room

Mine cost me about $500 plus I supplied the transformer and EMI/RFI filters. I was having other work done, so it was relatively inexpensive. Also, the distance from my incoming power to the audioroom is only about 25 feet. I don't recall the prices of the transformers, but if you go to the Allied website there are several that should work, depending on your power requirements.

Thanks for the input. I appreciate your advice and I can incorporate some of ideas easily enough into my building project. I'll be better able to explain to my electrician what I want and why.

Thanks again.

Abstract7, Could I assume that the secondary winding on the toroid is center tapped and you grounded the center? That would give you the out of phase balanced =&= 55 volts. Some isolation transformers may have a center tap but I am not sure that it is absolutely necessary to ground either leg of the 110 as long as the safety ground is intact. Can anyone in the know comment on this. The main reason for the isolation transformer is that many have a faraday shield between the input and output windings that helps to prevent noise from getting thru. Electrical supply houses can get multi-KVA transformers that can handle 50+ amps.

Audioken, If your new house is actually going to be 440 volt (and you are in the USA) you will need one of those big step-down transformers feeding the distribution box. Let me know how hard it was to get the power company to install 440 service. I will do it for my garage so I can force them to put in a single transformer on the pole just for me!

Sqjudge: Yes the ground is center tapped. I had to go back to the wiring diagram to figure that one out, but that is how it's done.