Join Date: Jul 2006
Location: Memphis, TN USA
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When asked for any downsides of a voltage regulator, Barry Ober of JL Audio recommended that I NOT use a voltage regulator, citing that the surge protection of most devices is a sacrificial process, meaning that the component is sacrificed/destroyed upon a high voltage surge. He also pointed out the high cost and how voltage regulation wasn't necessary unless the power was off by a very wide margin, as in 200+ volts. He promoted buying and using the SA-15/20-AR SurgeX as a standalone surge protector for the Gotham. He also suggested changing out standard power outlets to hospital grade for tighter connections.
However any benefit from the SurgeX is negated according to the manual of the Furman SPR-20i, for it states, "Another critical feature is our exclusive Series Multi-Stage Protection. This virtually maintenance-free surge suppression assures the highest level of AC protection possible, without sacrificing itself when the offending surge is severe – no damaged equipment, no service calls, no down time."
Further, the manual specifically mentions amps/subwoofers: "With today’s chaotic demands on many municipal power facilities, AC voltage is often reduced so that it can be stretched to fulfill excess demand. This creates a substantial negative impact on your system’s performance. Power amplifiers and powered subwoofers cannot perform to their full potential. Even a relatively modest reduction in AC voltage can obliterate the sonic impact of an otherwise superior system. Just as problematic are excessively high line voltages. Excess voltage can overheat sensitive circuits; lower the life and reliability of projector lamps, and cause many circuits to shut down.
With the SPR-20i’s exclusive Stable Power AC Voltage Regulation Technology, voltage-starved power amplifiers and powered subwoofers perform at their full potential. With the SPR-20i, home theaters are supplied with constant, virtually unwavering AC voltage. This assures trouble-free service for any environment suffering from unstable power."
Perhaps the Furman manual is what you are referring to as pure marketing. Yet big budget studios believe in Furman's alleged snake oil products, so some merit must exist. I'm still leaning towards keeping the SPR-20i x 3 since we still don't have any proposed drawbacks for their use, only potential benefits that may or may not be readily realized. If everything runs perfectly for long-term, then the user will remain oblivious to the transparent benefits, but that's good enough for me. This is like arguing no name spaghetti wire vs Transparent Opus, term life vs whole-life insurance, tar based asphalt shingle vs a slate roof, aluminum vs copper gutters, or Masonite vs HardiePlank since the vast majority will consider the latter to be unnecessary, a waste of money, and with subjective benefits.
Last edited by Neo-Geo; 08-04-2014 at 12:17 AM.