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Old 08-23-2011, 02:31 PM
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cougit25 cougit25 is offline
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Join Date: Apr 2009
Location: Seattle, WA
Posts: 633
Question PPP THD % Numbers on the rise!

Hi Guys.

Love my PPP but over the last month or so my THD% output has gone from .5% to 1.7%. The input THD% has remained the same at 3.8%.

My input voltage is averaging 118V and output voltage 120V. I've tried unplugging the PPP to reset the microprocessors and the THD% output comes down to 1.1% but slowly works back up to the 1.7%

The music still sounds great but the higher THD% numbers concern me. I guess my question is, do I need to be concerned or is this normal?

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