Rotel RB 991 common ground?

warren
warren Posts: 756
edited June 2005 in Electronics
Our P.B.S. had a slightly used record cd, and tape sale this weekend, along with audio equipment I snagged a Rotel RB991. dose anyone know if it is a common ground amp. so I can use it with my Polk 2.3s Thanks,, Warren
Some final words,
"If you keep banging your head against the wall,
you're going to have headaches."
Warren
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  • thehaens@cox.net
    thehaens@cox.net Posts: 1,012
    edited June 2005
    From what I gather you can take a VOM and place it across the negative speaker terminals, if the meter reads 0 then you are good to go. But to be on the safe side, just call Rotel and ask them.

    So I was brainstorming this a bit with another polk member at my house the other day. I have two power conditioners that have a ground lug on them. All of my audio/video components all have, or have been changed to 3 prong power cables. All my components are plugged into the conditioners, I had to buy two as I had more components than inputs. I also ran a copper braided cable between the two power conditioners. So with this I would suggest that all of my components have the same common ground. So I would think that even if I had a non-common ground amp....and I plugged it into the conditioner, wouldn't it now be common grounded? Certainly electrically they would all have the same point of reference...

    Chime in....would be curious to what you think..

    scott

    edit - I am going to start this on another thread as well.....
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  • warren
    warren Posts: 756
    edited June 2005
    The RB-991 uses Rotel's balanced design and star grounding which means that both channels do see the same ground. I am guessing that this is what "common ground amplifier" is referring to.

    Best Regards,
    Shane Kea
    Technical Support
    B&W/Rotel
    He is the guru Iam a Polkie, Scott I like you logical thinking, but I dont think thats the same type of grounding, it could be though, I really dont know. Anyway, the Rotel is a common ground after checking it out with the V.O.M. That Rotel really opens up the sound stage of the Polks. Thanks Scott, Regards, Warren
    Some final words,
    "If you keep banging your head against the wall,
    you're going to have headaches."
    Warren
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