guys so i installed the cd player yesterday and everything worked fine, only now when i turn off my stereo i get a very low humming from my subwoofer, i disconected the cd player to see if it would go away but it doesnt, i rechecked all my connections and nothing, still there now i noticed that when turn on the reciever and put the volume down all the way it does not hum, but when i turn it off it comes back, i noticed that when i touch the amplifier case chassis it goes away, so i went and got a wire and grounded to the chassis and to the center screw of my poweroutlet, now is theyre something wrong internally with the amp or whats going on, thanks guys for your time.
humming in subwoofer
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no the sub does not have ground connection, its a 2 prong connection just like the rotel's, i eliminated the humming by attaching a cable to the rear ground screw on the chassis to the screw on the wall outlet in the middle wich is a ground connection and went away, i spoke to rotel and they told me this was perfectly fine, what do you guys think?- Bottom
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Originally posted by ejuanpimani leave it on because, it has an automatic shutoff...
In any case I'm glad you got it fixed.
Kevin D.- Bottom
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Intresting Kevin D is this something i should have rotel inspect on the reciever?, is something damaged inside the reciever?, my subwoofer is connected thrue high level inputs from speaker set b from my reciever, or is something wrong with the subwoofer all of a sudden?, or is this the actuall way it has supposed to be working from the begining? sorry for all the questions kevin but i am eager to know that everything is working to its potential without any risk of anything going bad.- Bottom
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Highly doubt it's anything wrong with you equipment. It's possible something is wrong in one of the electrical outlets, but nothing that's potentially damaging.
Might want to double-check all your connections as it's a little strange it started after you put the CD player in, but doesn't go away when removed.
Kevin D.- Bottom
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see where i was getting too kevin, was the following i believe that what happened is that the dvd player i had before somehow created the ground or was the ground for my reciever and since i have used it with that dvd player since day one, it never made anynoise, and now that i changed it is when the ground loop arised, theyrefore this is why i had to ground the chasis of the reciever could this be a possibility?- Bottom
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i think something is wrong even if the symptom has been alleviated
assuming you are feeding analog out follow this:
1 if a dvd player hooked up to an outlet doesnt hum but your new cd player on the same outlet does hum then
2 hook the sub and cd up to the same outlet using a splitter
if it still hums replace the cd player
if it only hums with scenario 1 it probably has a power supply that is more susceptible
what should be done is having a "clean power" surge protector so all your equipment comes from a common source eliminating ground loops- Bottom
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peter do you assume something is wrong with the equipment, what i assume is that the dacs in the dvd player were just such a low quality that they some how interfered with grounding or created such and it used to ground the reciever thrue the interconnects- Bottom
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well i just came from plugging in the old dvd player in the system, i disconected the ground from the chassis on the rotel, and the hum came back then i plugged the dvd player power in and plugged the interconnects and boom hum is out, so its forsure that the ground of the reciever was being taken from the dvd player... what is this sign of?, i just left it back to how i had it, just grounded the chassis of the reciever wich is a straight ground...- Bottom
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