Ground wire from tonearm check first. |
Did that and hum still persists. |
What happens when you disconnect the turntable ground wire? |
Was there ever a time when it didn't hum like this? What is different now? |
When it is disconnected appears to be lower noise level but when I start playing a record it is the same when ground connected . No problems before only difference is I use a different outlet since the furniture was rearranged . Are you thinking the a/c line causes this even with the line conditioner ? |
I would consider there may be an issue with the tonearm wires. Recently had the same issue and had to address the wires in the base of my tonearm. In my case the din plug required its set screw to be tightened as there was motion of the wires as the tonearm was moved since as the DIN plug was loose allowing a ground issue. This was a recently shipped tonearm but something similar could be occurring even with a continuous tonearm/TT cable |
Okay will check that out and see what the deal is...thanks for your help and happy listening ! |
No problems before only difference is I use a different outlet since
the furniture was rearranged . Are you thinking the a/c line causes this
even with the line conditioner ? Yes, and that's exactly why I asked. Everything must be plugged into the same outlet (circuit) or you are likely to get ground loop hum just like you're having. |
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Ground Loop. Funny, i jsut spoke about those on another thread.
Everything must go to the same ground point. Find one outlet, put a high quality outlet strip on it, plug into that. Need to get somewhere else, get a logn, heavy extension cord.
Grounding not only causes hum, which we all hear, but all sorts of subtle distortions which no one ever seems to appreciate, but destroys good sound.
On my on designs i typically allow each chassis to either float or be grounded. Both ways have safety grounds, but one way eliminates a potential loop.
G
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Does any of your equipment employ a wall wart? |
Dual turntables have a history of ground hum problems. I owned a Dual 506 for years, but it would occasionally produce a loud hum. I truly loved the Dual sound! I currently own the Technics SL-1200M3D and Sanyo TP-1010 turntables, and I never have any hum. |
Run an extension cord back to the main outlet, for investigation. If that works the other outlet is probably on the other leg.
Swap breakers or hire an electrician.
Or try a cheap iso transformer. If that works you can get a good one for better SQ.
If you're downsizing go with the $10 solution until you get resituated.
TT baloney.
I had -50db hum for 30 years. Just plugged the same TT into a Puffin and it's now vanished, SPDIF OR analog out. |
Get a ground cheater one of this gray plugs . Leave the amp grounded and then float the ground of each component in your system at the ac plug one by one, Leave your turntable ground wire attached to your phono stage or preamp while you doing this. Just make sure to turn everything of from one step to another . You will find the ground loop . Be calm and patient
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Okay ! Thanks everyone for your input and no wall warts in system .
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Upgrade to a better tt soon. |
If your new location setup puts the components closer to your WIFI router or extender, your components may pick up the noise from it. This happened to me twice in both of my systems. Simply unplug or move your router/extender further away from your system. |
Wazoo. You said the noise picks up when you play the record. Put the cue arm up and move the tonearm across and over the record. Does the hum increase as the arm approaches the motor? If it does you have a shielding or grounding problem with the motor. Grado cartridges will do this on some tables. |
I switched the tt power to a separate outlet that is on it's own line and still get the hum. Going to try and replace the phono cable and start all over again . |
Hello Wazoo. With time, the connections to the phono cartridge itself can oxidize. Slide all four of the connections to the cartridge on and off 10 times (one at a time) and see if that helps. Replacing the cables from the turntable to the amplifying device was a good idea. |
Recently My turntable was making a similar hum and the meters on my Phono PreAmp were going nuts. Turns out it was the WiFi Satellite that I had placed near my equipment. I had a satellite so that I could plug in Ethernet cables directly and didn't have the dropouts of WiFi with my streamer or TV. Evidently the WiFi Satellite caused a bunch of gain that interfered with the system. I moved the Satellite into a room behind the system, a good 15 feet away and ran Ethernet through the wall and it solved the problem. I am also told that if your turntable cables run parallel to any power cable that can cause similar issues. |
If it were a cable or contact problem it would only occur in one channel.
Wazoo, does the hum get worse as you move the tonearm across the record?? If it does you have a motor ground or shielding problem. |
Hello,
I love Rega TTs, but I heard they have that him issue unless you get the right cartridge. I would still love to get a P6 or P8. Maybe someday. |
@Wazoo: Just guessing,but as someone suggested, it maybe your interconnects not making good contact. Burnish the plugs and jacks slightly. |
Hi,
as tonearm cable is most propably jointed at a small board inside the table my guess is that by moving it the first time some earthing got detached as long as you did not make any other change, ie taking cartridge out. Undo the underside and inspect if all tiny little cables are still attached. I doubt that both RCA’s presented an issue at the same time.
Earthing/hum issues are eliminated by trial and error. |
Just reset everything using a separate pre-phono & hum is gone ! Think it is a problem in my preamp with the built in phono stage ! |
