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Left output from one of my turntables cuts out regularly leaving a hum

I have a pair of stanton STR8-30 's which i am using with a NUMARK DM1002 MKII mixer. The output from one of my turntables regularly cuts out on the left side leaving a constant hum. The only way i seem to be able fix it is to turn my mixer on and off a couple of times or fiddle with the wire for ages, but this doesn't always work (or not for long anyhow). Ive tried changing my cables and mixer but this does not work. Could it be a problem with my grounding? My mixer only has one ground connector for both decks. Or do you think my turntable is broken?

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No, the issue is either with the RCA cables or the tonearm. You might also want to check your cartridge and headshell connection. Make sure the contacts are nice and clean, and securely on the headshell. Have you tried swapping out your turntables? Take the left turntable, and put it on the right channel's input, and vice-versa? This will tell help isolate the issue. If the problem just moves, then we know it's not your mixer. If the problem remains on the same side, then you know there is something wrong with your mixer.

If the problem moves, then you can safely say it's your turntable with the issue. The STR8-30's aren't the greatest quality, so it's also possible that you have a faulty tonearm or RCA cables.

Hope this helps.


Posted on Jan 19, 2008


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