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

Post Subject: Hum issuesPosted by Beav on: 5/27/2009

drdha,

Is your hum comming directly from the purepower unit itself?

I've been doing some research on hum issues in general; a goood site for information is linked here http://www.epanorama.net/documents/groundloop/home_solving.html

Previously I reported that when I hooked up my powered subwoofer to the purepower 2000 my sub let out an awful hum. I finallly solved the problem by using a different method of hookup between the sub and the Receiver. It's as quiet as mouse now. In reading up on hum issues (ground loops) I've found that even the experts are sometimes stymied by the cause. It can be with a component or how components are hooked up to the system you have. The best solution I've found is to experiment. Luckily for me I had options with my sub for hookup, had I not the answer would be that particular component is incompatible with a power regenerator, or at least the one I used. If it's a component issue and the rest of the system is benefriting then I would change out the component. If it's a system wide issue I would change out the power regenerator. BAd power is bad power, if you got it, you have to look for ways to treat it. So far I've been quite pleased with purepower in two different systems, in two different locations with both the 1050 and now the 2000. Customer service issues are another story; and only the company itself can address that. Since I solved my own problem by combination of research on the internet and experimentation I in the end did not need to use Purepowers new hum adjustment tool built into the unit. What I like about Purepower is they are always coming up with new ideas to solve age old problems in the power arena. I do believe timely responses to a customer's problem are as essential to a good product as the product itself. Even if the company is having difficulty resolving the problem, giving a status report to the customer is also the professional way to do things. In my real world job I work in the Project Management field, and if I were to fail to give a "stakeholder" in the project a progress report I would not have my job for long. I have found that in general most A/V companies do a good job of communication; those that don't rarely receive my business again. I hope that Purepower will help resolve your problem, keep us informed.

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