how many folks have +10kVA trannys before the rig?

If you can swing the power company to do a three phase install on your home, you get your own dedicated 15 KVA transformer and (if lucky) you will be the only one in the neighborhood on the transformer.

I did this, took a lot of time with a TXU supervisor and I had to "prove" I needed it. In my case the photo studio on the back of my home. Probably a big stereo with multiple breakers might convince them too.

While you're at it, the 750 Amp trans socket meter base is a huge upgrade over conventional power meters and as a bonus, there is no provision for trans socket to be digital (at least not in my market).

Jeffcott, if by "downstream iso", I assume you are referring to the small 125va iso on the CD dedicated line. That iso, while next to the subpanel and large iso, is only 15 ft. from the CD player. Note that I mounted it at right angles to the main iso to minimize any cross coupling. I have tried the small iso in the room on the CD, and tried it as presently mounted, and could not perceive any difference. Note also that the class D amps in each speaker are on dedicated lines but not through the main iso.

Zargon:
Yes, that is what I was trying to communicate. I hope that you understand that I meant absolutely no disrespect by quoting what the documentation says. I can think of a thousand reasons why an ISO might very well not be the most desirable component in a living environment. Like I tried to say, NICE install.

Jeffcott,

No disrespect taken. My comments were mearly directed at trying to pass what I learned when experimenting with the small iso location.

WRT to the desirability of having an iso in the living environment, while the small iso is virtually inaudible and only slightly warm to the touch, the large iso can easily be heard from several feet away, and is quite warm to the touch. Hence, I decided to locate both isos on the block wall just outside the audio room.

I have been using balanced ISOs in my living environment for the past 5 years; currently 1 x 2kVA Equi=Tech Q type and 2 x 250VA in a single chassis. I recently completed a rebuild in a taller chassis, to add the second 250VA transformer. The large iso has an oversized core, is very immune to saturation from DC on the power line, and as a result, runs quietly. I've tried other isos that were very noisy.

Current setup: http://img.villagephotos.com/p/2003-5/191557/2083672

Past versions: http://img.villagephotos.com/p/2003-5/191557/1741050

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