Mr. Tanner-
From your marketing literature-
http://toruspower.com/Documents/Torus%20AV%20Rack%20Spec.pdfbolding added by me
Torus PIUs use two phases of 120VAC for
a 240VAC input to a center-tapped
transformer (120V-0-120V). The centertap
is grounded. This technique is similar
to Balanced-Power output systems (60V-
0-60V) which are proven to reduce noise.
Balanced output systems, however, are
restricted in their use by Electrical Codes
to “Technical Power” applications. They
must also include GFCI (ground-fault
circuit interruption) outlets, which are
prone to nuisance trips.
Specifically how are these techniques similar other that the use of the words 'split-phase' in their descriptions? Split phase input cannot provide the specific benefit of cancelling reactive leakage currents in the grounded components it feeds, as does real technical power. (Well... actually it will cancel the reactive currents from the primary of the Torus transformer itself.) While balanced output (technical) power can be demonstably proven to substantially reduce noice, what exactly does split phase input do? Simulations, equations, or actual measurements would be most appreciated.
'Prone to nuisance trips'????? I wouldn't think the very finely engineered products from Bryston would cause such. Nor have I ever experienced such on any competently engineered product. 5ma of leakage (the typical trip setting of a GFCI) indicates a serious problem. These 'nuisance trips' will be a real surprise to the owners of Equitech, BPT, Furman, etc... balancing conditioners.
[
EDIT - Rereading my last paragraph, I realize the mention of nusiance trips is quite germane. Give the power ratings of these Torus offerings, I realize that the target market isn't specifically home audio/theater, but rather small and large venue environments, small clubs, on stage performance ..... Its highly likely that an artist might well show up with their beloved 40+ year old guitar or bass amp. The often have the neutral tied to chassis (that been a no-no per UL for over 30 years) and would inevitably cause a nusiance trip. Such a trip the GFI in balaced conditioners is far prefferable to the other potential of electrocution. Given the vaugaries of what specific equipment a performing artist might show up with, that avoiding nusiance trips is very important.
