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In the Forum: Audio Discussions
In the Thread: It’s mad, mad, mad... electricity.
Post Subject: Let's clear things upPosted by Petrasescu_Lucian on: 7/15/2009
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 PurePower wrote:
The PurePower batteries provide power to the AC regeneration whenever it is required. That could be during a black out, it could be during a brownout, it could be for a fraction of a cycle it could be for 10 minutes. The simple fact is the incoming Utility AC can have voltage sags of very short duration - of very long duration and they can be very deep, or very shallow. The batteries provide available power in all of the above. Without its own source of power it would be impossible to truly isolate the PurePower output from the incoming utility power. That is why there is no difference in sound when the PurePwoer is on battery or it is on utility supply. The output of the PurePower is not dependent on the incoming AC in any way - so the output is as if it was always running on battery.



   My initial inquiry about the operation of the APS unit was not because I was interested in running the unit during a blackout...I would have much bigger concerns than just listening to my stereo when the AC voltage were to be cut...so to me this is just a marketing gimmick, as I can always buy an UPS at a fraction of the cost if I were interested in back-up power.

   The real reason is this:

   Purepower claims their units can always provide a rock solid voltage without any minor fluctuations such as a fraction of a volt AND, the most important claim, can OFFER a bigger output in amps than regular wall socket if the demand from the amplifier is to great for the electrical wiring of your home (too thin wires that cause compression for very short periods of time): http://www.purepoweraps.com/regen.htm (see the Bryston 9B SST amplifier experiment).

   Now, one would consider that these impressive features can be achieved by running the unit ONLY and EXCLUSIVELY from the batteries and the power cord connected to the wall simply replenishes and prevents the batteries from discharging.
   Think of this as your regular cellphone...it ALWAYS runs from the battery even when you connect its charger to the wall...

   Is this the case with APS units ?
   So far I have no definitive answer as a lot of people claim they hear differences between conected to the wall and running from the batteries, AND the most disturbing fact is that there are also claims, such as Romy's, that THERE ARE differences in operation and thus in SOUND between the 1050 and 2000 models.

   I had in mind the possibility of trying the 700i model in October but now I'm quite reluctant since I hear there are so many construction problems and differences in SOUND between units...
 
   Please let me be clear... I for one DO NOT give a damn about the lame reviews that sadly audiophiles make these days, as most of them NEVER say what was wrong with the playback of their systems in the first place, and what BENEFITS and COUNTER-BENEFITS the regenerator introduces to their system, instead they make bogus claims like "blacker backgrounds" (expression which frankly I do not understand) or that their system is "louder" now... What do you mean "louder" ? Is it more dynamic ? (has nothing to do with loudness). Has the AC voltage at the amplifier output increased ? Shit like that...you know what I mean...

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