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In the Forum: Audio Discussions
In the Thread: It’s mad, mad, mad... electricity.

Post Subject: Another PP2000 problem: hopeless?Posted by drdna on: 7/6/2009

Well, I think the short answer is yes.

What the people over at Technical Support have told me is that this is due to the power supply design of the amplifiers that are being driven by the PP2000 and that it seems to be characteristic of certain types of circuit configurations such as a low powered SET amplifier driving a high efficiency horn loudspeaker. They say this is not the typical stereo set-up and they did not test this when they originally designed the PP2000.

Now, they say they have got this kind of circuit set up in their stereo testing lab and have replicated the buzzing results. Each time I call them they say that they are working on finding a solution to this problem and "getting close" -- but it has been almost a year now with no end in sight. Probably too late for me to return it at this point.

There is nothing you can do to eliminate the buzzing (I've tried) short of changing your stereo components internally.

If the buzz is bothering you, I would just return the unit to them and demand a full refund.

Adrian

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