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Newer turntables don’t use ground wires. A ground wire will not illuminate feedback. Feedback is caused by vibration and a ground wire would not solve the problem. The turntable maybe too close to the speaker. Sometimes an open dust cover on a turntable will cause feedback.
it may not be feedbacl, but ground hum. make sure the turntable is grounded. the turntable should have a ground wire with one end stripped. Bend the stripped, bare wire into a u shape and hook it around the ground screw of your receiver and tighten it down. If your turntable is already grounded, it may be feedback. you may have speakers too close to the TT or your volume is too high
The noise will be earth feedback. You might need to connect a wire to an earth point on the turntable - that goes to earth (a metal pipe etc). Sometimes the earth feedback is caused by the earth cable (green/yellow) in the plug either connected or not!
You may be experiencing Acoustic Feedback, although it doesn't really make any sense the way you describe it. Make sure the tonearm is balanced and the proper weight is dialed in on same. Does it make any difference if the volume or bass are turned down, which my point to the Acoustic Feedback.
I'd fix the tonearm issue first before using it to decide you have a feedback-related issue with one brand of cartridge. I can't say how that would be fixed.
Feedback? Like airborne sounds from the speakers vibrating the turntable and being amplified through the speakers? The biggest downside to old-school vinyl use is that possibility and the workarounds we had to use to prevent it. Acoustic and physical isolation are the only solutions.
There will be some feedback from the turntable, and this is totally normal. Ive actually heard the music from the needle itself, and is nothing to worry about
1) The phono input on the receiver contains an additional stage of amplification required for typical turntables.
2) Pluggin in a unit that has a signal level too high will generate this hum.
3) Your turntable contains an pre-amp that allows it to work using an aux input (or tape input) as most receivers today no longer have phono inputs.
4) Grounding issues relate to the older types of turntables where there was NO pre-amp stage inside the turntable. In this case ,the signal levels were so low that stray noise would often get in the way of the signal. Proper grounding would elimiate this noise.
Is the feedback sound a low hum and also does this 'feedback sound" occur whether it is selected to CD, turntable, or on all of them regardless of select?
This is a tonearm issue. Your tonearm probably has a loose ground connection, or if you moved it recently, may have been damaged in transit. Also, try and move your turntable to a different location in the room. If your near any serious power source (light dimmer switch, microwave, frig, etc), it will only amplify the issue. But other than that, it sounds like a common tonearm issue, and you will need to have your tonearm replaced.
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