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View Full Version : Balanced AC power Transformer

bigbadwolff66
03-05-2008, 08:32 PM
Has anyone ever put together a custom array of outlets using a balanced AC power supply like something available from Equitech or Plitron?
I've looked into some balanced AC power, but for instance the Monster HTPS 7000 only has balanced power on the digital outlets and does not even attempt to balance the power for the higher current outlets that drive the amplifiers.
GV#27
03-05-2008, 08:43 PM
I have a 500VA Plitron toroid that I use to supply balanced AC to my source components.To supply large amps with balanced AC would require a very large tranny.
bigbadwolff66
03-05-2008, 10:14 PM
A digital switching AMP only pulls about 6 amps. There is a Plitron balanced AC power supply that is rated at 2000VA and is @ 28 lbs. It is not a lightweight, but it is not a monster either.

What did you think of the balanced power on your components? Notice any significant difference?
ShinAce
03-06-2008, 12:39 AM
Pardon me, but what is balanced power?

Is it just center tapping the voltage source for a floating ground(ie 60-gnd-60) or voltage regulation?
GV#27
03-06-2008, 12:52 AM
Pardon me, but what is balanced power?

Is it just center tapping the voltage source for a floating ground(ie 60-gnd-60)
exactly,the idea is the same as for a balanced audio signal whereby you get a big increase in common mode rejection so less noise.

Edit.the center tap is connected to the AC ground.
GV#27
03-06-2008, 01:10 AM
A digital switching AMP only pulls about 6 amps. There is a Plitron balanced AC power supply that is rated at 2000VA and is @ 28 lbs. It is not a lightweight, but it is not a monster either.I would call 2k VA somewhat of a monster.:)Yes you could run several Class D amps off of it or 1 big or 2 smaller Class A/B amps.
What did you think of the balanced power on your components? Notice any significant difference?I won't claim to hear huge audible differences with it installed because I don't.But I do know for a fact it is effective at reducing noise on the AC line.For example without the unit hooked up, when my wife uses her hair dryer a nasty buzz appears on my system and at fairly hi levels,but when the balanced unit is hooked up and she runs the dryer,the noise is not apparent but strangely the (balanced)transformer starts to emit a loud mechanical hum .:confused:Maybe there is some DC leaking back in the line?