Youduoliang

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Apr 30, 2020
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2KW Isolation transformer limits power amps' performance. Isolation Transformer's rated VA should be at least 2 times bigger than Power Amp's transformer. 3 times bigger is ideal.
 
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Mikem53

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Oct 1, 2020
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Measure the voltage output of each at that location.

Also how consistent was Ron’s placement along with things in the room?
That’s the Key .. I owned the Equitech ET2Q for over 20 years.. The secondary winding has a higher output. The unit if fed 120v, will output 124-126 V, half that on each leg. They do this to keep the voltage from sagging under load. So if you lightly load it, you will get a higher voltage, even a medium load will still yield more voltage than the incoming line..
When I removed my BAT mono amps from the system, the unit kept delivering 125+ volts, which was too high for my low powered tube gear.
 

Uk Paul

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That’s the Key .. I owned the Equitech ET2Q for over 20 years.. The secondary winding has a higher output. The unit if fed 120v, will output 124-126 V, half that on each leg. They do this to keep the voltage from sagging under load. So if you lightly load it, you will get a higher voltage, even a medium load will still yield more voltage than the incoming line..
When I removed my BAT mono amps from the system, the unit kept delivering 125+ volts, which was too high for my low powered tube gear.

It seems that most companies are spec'ing transformer outputs to match the input at full load which in use they will never achieve. We spec ours to equal the input at 40% load which is far more realistic for an audio system, thus protecting connected equipment from overvoltage as you describe.
 
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