Hi all-
So I’ve run a search through the forum but I didn’t find an answer to this specific question.
I have a 300b tube amp. Totally quiet on some backloaded horns. ELDac from JDS labs gives me totally quiet music as well. So basically the bottom line is that my amp and components are plugged into the wall are totally quiet.
Enter new turntable. I’m getting a very faint but very clear buzz out of the speakers at all times. I can hear it in the music at all times. It’s annoying. I’ve tried shielded cables. Switching plugs. External grounds. Absolutely nothing stops this buzzing. Exceeeept.
When I turn off my living room lights. Buzz is still there but faint and not very noticeable.
So my question is - other than the turntable - all my components are dead silent. Clearly the electricity in my house has an impact on the turntable sound. Is the problem something in the turntable that can be fixed? Or is the only solution some kind of clean power supply.
The turntable manufacturer has been very responsive and dedicated in helping troubleshoot so I will leave out the name until a resolution arrives.
In six months I’ve bought and built this system so I’m pretty tired of spending money. If I can solve without the power supply that would be awesome.
So I’ve run a search through the forum but I didn’t find an answer to this specific question.
I have a 300b tube amp. Totally quiet on some backloaded horns. ELDac from JDS labs gives me totally quiet music as well. So basically the bottom line is that my amp and components are plugged into the wall are totally quiet.
Enter new turntable. I’m getting a very faint but very clear buzz out of the speakers at all times. I can hear it in the music at all times. It’s annoying. I’ve tried shielded cables. Switching plugs. External grounds. Absolutely nothing stops this buzzing. Exceeeept.
When I turn off my living room lights. Buzz is still there but faint and not very noticeable.
So my question is - other than the turntable - all my components are dead silent. Clearly the electricity in my house has an impact on the turntable sound. Is the problem something in the turntable that can be fixed? Or is the only solution some kind of clean power supply.
The turntable manufacturer has been very responsive and dedicated in helping troubleshoot so I will leave out the name until a resolution arrives.
In six months I’ve bought and built this system so I’m pretty tired of spending money. If I can solve without the power supply that would be awesome.
Try plugging the entire system into a power strip with filtering.
Amazon.com: Tripp Lite Isobar 6 Outlet Surge Protector Power Strip 6ft Cord Right Angle Plug 3300 Joules (ISOBAR6): Home Audio & Theater
What kind of lights are in the LR? You could also have an electrician check your grounding panel,
which is my guess for the culprit (unless you have light dimmers).
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Dimmers often cause problems. If you switch them power completely off,
not just down, do you still hear any noise?
So the buzz doesn’t change whether the dimmers are on full blast or down or all the way in between. The only way it reduces buzz is if they’re all the way off
There's your problem, have an electrician wire the dimmers into a different circuit.
Also he should check and clean your ground panel. If it's really bad, replace it.
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Right so. Is that the only solution? Will the thing you recommended from amazon fix it? I’m just saying because I’ve dropped thousands between amp and components. And then built the speakers. And now I’m furnishing a House.
There's a chance that a line filter would help, I'd say 50/50 at best.
You could try one, and return it if it's of no help.
The problem with interference is it can be conducted (through mains) or radiated (radio frequency) or both !
A mains filter will fix one.
To fix RF you would need to check if you have a RF filter on front end of pre-amp.
If not fit one.
Is the pre amp in a grounded metal box ?
A mains filter will fix one.
To fix RF you would need to check if you have a RF filter on front end of pre-amp.
If not fit one.
Is the pre amp in a grounded metal box ?
Both the turntable and the amp ground through my amp. Left channel I believe. I don’t know enough about wiring to tell you much other than that. All I can say is my amp is otherwise very quiet.
Perhaps the turntable motor is taking mains hash and coupling it to the pickup cartridge? Solution is either filter away the mains hash, or try a different cartridge with better magnetic shielding.
When you turn the LED lights off does it still buzz?.
Recent Elektor had an article illustrating the EMI of LED lamps -- other sources of interference include smps wall-warts -- i note that the iPhone charger can be heard !
What is a 'ground panel' ?
Do you mean the Safety Ground screw terminal bus in the main breaker box?
While the screws may loosen, seldom does the bus go bad.
These will vary, from a copper sheet to a bus bar. Corrosion can cause real problems.
Don't Get "Heated Up" Over Electrical Corrosion
Rust and Corrosion in Electrical Panels, A Study and Report on Water Leaks into Electrical Panels, Frequency and Cause, requiring electrical panel replacement - new electrical panels and circuit breakers - IEEE Holm Conference Proceedings, Daniel Friedman 1991
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Some older homes still have a larger sheet, or a strip like this.
.25" x 2" X 10" Copper Ground Bar with 16 Holes - Manufactured by Storm Power Components
LED lighting -- does it have a "dimmer" ? -- some LED lamps can NOT be dimmed, and for most you can't just use an SCR type dimmer.
also didn't address what you are using for a phono-preamplifier. a "buzz" issue is more indicative of a power supply issue, while "hum" is a problem with 50/60 cycle power -- ground loop, etc.
which turntable, cartridge and phono pre?
also didn't address what you are using for a phono-preamplifier. a "buzz" issue is more indicative of a power supply issue, while "hum" is a problem with 50/60 cycle power -- ground loop, etc.
which turntable, cartridge and phono pre?
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