Rank: Member
Groups: Member
Joined: 9/5/2010(UTC)
Posts: 2
Location: Panama
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I am having a hard time with hum noise and what seems to be vibrations noise transmited by my turntable cartridge in My Ref. Version C with my altec 99 dB sensitivity. Can somebody help ? Where should I start? Dirving 
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Rank: Advanced Member
Groups: Member
Joined: 6/12/2008(UTC)
Posts: 79
Location: Norway
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I assume you have isolated the problem to your turntable? The noise probably originates from either the platter bearing or the motor in your turntable. Two tings you can try is clean and change oil in the platter bearing and then start experimenting with your turntable stand. I generally get good results by putting the turntable on a solid, heavy piece of wood, concrete or stone. You can try different kinds of coupling/decoupling material (spikes/rubber/sorbothane etc) under the piece of wood. Make sure the turntable is in level.
If this doesnt work; many RIAAs have a rumble filter, if your doesnt have one then you can make one yourself. Its a highpass filter with rolloff at appr 20Hz.
Good luck!
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