Properly connecting an isotaion transformer


I have a single dedicated 20amp circuit for my audio and video equipment. I'd like to connect an isolation transformer. I'm looking for guidance on how to properly connect it. Once its connected, do I still need to run another dedicated circuit to seperate the analog from the digital?

The isolation transformer I'm looking at is a single phase 2.5kva topaz isolation transformer.

Thank you for your help.
vman71
Sean: I posted my system in the "Virtual Systems - Opinions Please" directory of A'gon. My listening room is 15W x 20L x 8H. I usually don't crank the amp too far only because the main speakers are so efficeint (102db sensitivity) that it doesn't take too much to get it loud.

I just bought XLR IC's to go between my amp and my pre-amp. I went with an Acoustc Zen Matrix II (center) Pure Note Epsilon Reference ver4 (mains) and ver3 (rears). All are XLR terminated. I previously was using Monster RCA IC's.

If I cannot do the isolation transformer as my way to provide clean power to my amp, is there another solution you would recommend? I say this because given my space where my equipment is located, I will only be able to have a single isolation transformer for all my equipment both digital and analog. My "bump out" for my equipment is only 8ft wide by 3ft deep.
Vman: If you would like and since you can't use them right away, send me your cabling and i'll burn in it for a week or so and ship it back to you. This should give you a better idea of what to expect from your system right off the bat. One catch here. You'll have to cover the shipping both ways : )

As to the transformer situation, i don't see a problem with using it to feed the whole system. You will probably end up drawing but a watt or two from each amplifier channel during normal use due to the high sensitivity of your speakers, so current draw is not a problem.

Outside of the iso transformer, what you might want to do is to use some type of device that offers further isolation between components and acts as a "power strip". This will allow you to divide the power coming out of the iso transformer in a somewhat orderly way and keep the components from "polluting" each other's AC supply AFTER the iso. Given that every device that you'll be using has some type of "switching" power supply in it, cleaning it up from the lines coming in and then isolating them from each other should yield further improvements.

I won't go into specifics in terms of brands to recommend, but some type of device that offers multiple feeds with each feed being seperate from the others AND having some type of filtering / surge suppression should do the trick. You can experiment with plugging the amp directly into the feed from the iso or through the "filtered power strip" to see what you think is best. If you don't notice a difference, you might be better off leaving it run through the "strip" for added surge protection.

As far as your installation goes, you'll probably have to angle your center channel speaker down somewhat. You might also want to think about placing some type of wide bandwidth absorption device on the ceiling near the speaker. This will minimize reflections and improve focus / imaging. I'm sure that you'll be very happy once everything is in place. I'm sure that you can't wait : ) Sean
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Sean: Thank you very much for the offer to "burn in" my cables. I'm waiting on one last cable to come in (AZ Matrix XLR IC) and then I'll have all the cables. I would need to check on the cost to ship them to you. If it is not too much, I will ship them to you and cover the return shipping charges. I'm in Northern Virginia, how about you (zip code also)?

Your suggestions about the different ways to improve power delivery to the audio and video devices is appreciated by me and I thank you for your time in offering your technical expertise.

Yes, I'm going to have to "toe" in my main speakers and also angle my center channel down. I've calculated that the apex of the sound from the mains (if they are seperated 10ft) is 13ft. I'll have to use a little geometry to figure out what the angles will be for the mains and the center.

I know that one of the first things I'm going to have to do after set-up is the installation of absorbtive and deflective panels. Wow, this is a fun experience!

Looks like I'll be painting the Man Cave this weekend and then all that's left is the carpet (which I'm not doing thank goodness)! Still shooting for the end of March but will probably be 1st or 2nd week of April.