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Now that Rotel has replaced my unit that had the humming problem, I'm very happy with the unit. There is an annoying popping that I get and I wonder if it is normal. I get the pop through the speakers when I mute a source, change source or change satellite channels. While trying to isolate it, I went to a non-active input (no input signal), and press mute, I get the pop. I do have highly efficient speakers so I might hear it more than others. It doesn't affect listening to material. It's just annoying, especially when changing satellite channels.
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just bought a new one this weekend...
I will check for your popping sound tonight (don't think I have used the mute function yet). -
How loud is the pop?Comment
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I can easily hear it 8 feet from my main speakers (sensitivity 102dB).Comment
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No pop whatsoever on mine...
...either using the mute button or switching channels. I also do not have the humm that has been described in some posts.Comment
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I'm getting tired of spending all of my Rotel time diagnosing instead of listening!
My popping seems to come and go. Tonight, I unhooked everything and slowly started hooking things back up. I didn't really discover anything. For some reason, the pop I get when I switch satellite channels seems to be mostly gone. I bet it returns though. Sometimes the mute pop would be barely noticeable, sometimes more noticeable.
While diagnosing, I found that my SVS sub had a hum to it. I have narrowed this down. It only hums if connected to the 1068 AND the 1068's component out is connected to the TV. This hum happens even if I unplug the TV.
I will probably email Rotel tomorrow, but they probably won't help much. When I emailed them about the hum I had with my first 1068, they said it was probably a ground loop problem and to contact my dealer if I couldn't fix it. That's a reasonable answer except that I had narrowed it down to a problem that they seemed familiar with when the dealer called them.Comment
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It sounds like its a static build up that's giving you grief..which might explain why you didn't hear it when you reconnected everything. How well is your satellite system grounded?Comment
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Andrew,
Could you explain more about static build up problems? I have gotten the impression that satellite dishes are a big concern unlike cable TV.
Any thoughts on my sub hum problem? If it was a ground loop problem, wouldn't it go away when the TV was unplugged? It seems similar to the problem I had before where I got a hum when another component was hooked via audio AND video.
Thanks,
MarkComment
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I had a hum in my subwoofer from my RSP-1068 and I was able to eliminate it by turning down the volume on my sub and I just used the 1068's subwoofer control to adjust the volume. I am guessing that the gain of my subwoofer was too high and therefore it was producing a hum. 8)Comment
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That's what Rotel just told me to try. I'll give it a shot. It's just seems like a work-around since the hum goes away when I disconnect the component cable going to the TV.Comment
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Dear Mark,
With regards to the hum of your subwoofer, I do not think disconnecting your TV from the outlet is the solution as I believe all TVs do be non-grounded (2 pins).
The fact that the hum starts when you connect the component cables to the TV implies to me (but I am not an expert) that the cable and/or satelite feed to your TV may be causing the problem.
Can you please try to disconnect both cable feeds from your TV to check if the hum disappears?
I had a ground loop hum using my RSP-1098 and RB-1080 and after I installed a ground loop isolator on my cable TV feed the hum was gone.
Regards,
OlafComment
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