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mikemorrow
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More Hum HELP!!!

I just got a new cartridge (Grado). I put it on and got a hum. So I put back on the old one. Still got the hum. This was not there before. Checked grounds, Ok. So I took off the cart, no hum. As soon as I put on any wire I get the hum. Where the heck is this coming from?

Jan Vigne
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Re: More Hum HELP!!!

From the angry Hum Gods. Time to sacrifice a cable to appease them. Whoochabooga. Whoochabooga!

Maybe you broke a phono lead while installing the new cartridge?

Buddha
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Re: More Hum HELP!!!

This may get me in hot water, and don't try it unless someone else says it's OK, but here's what I do:

1) Get a nice long piece of wire that can reach anywhere in your syetm.

2) Attach one end to a known ground that is independent of your system.

3) Then, start touching the other end of the wire to varoius places on your stereo - try touching it to your phono ground from the turntable, maybe to a screw on your phono-preamp, even to the motor assemply of your turntable. Just kind of roam around touching stuff and see what happens to the hum. I've even seen things happen when touching that sort of wire to the ground part of interconnects!

It sounds like you've created some sort of loop that is not immediately obvious.

***Don't touch anything "hot."***

_______________________
_______________________

Next, or instead, go online and search for "star grounding," I think it makes a big difference.

There are some posts here about it, too, but I forget where.

OK, that's my idiot's way of checking grounds.

Don't get killed.

bobedaone
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Re: More Hum HELP!!!

Rubber gloves, perhaps?

mikemorrow
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Re: More Hum HELP!!!

I'm an old hat to that. LOL already did it, Any way I'm going to get new leads. Thanks

Jan Vigne
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Re: More Hum HELP!!!

What tonearm is the cartridge mounted on and does the tonearm have an independent ground wire?

dbowker
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Re: More Hum HELP!!!

You could've done something to the phono preamp- I did once by not having the ground wire hooked up properly and a static charge went from cartridge to phono amp and fried a part. Plenty of hum came out... Just an idea.

cyclebrain
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Re: More Hum HELP!!!

Switch to CD?

mikemorrow
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Re: More Hum HELP!!!


Quote:
Switch to CD?


For years I have been recording my Lps to CD. 3000+ Lps. I got the Grado cartridge to record the classical. I will take the sound I get from it over any CD clasical recording I have. It is so sweet and warm and life like. I hope that it will transfer over to the CD like that.
Rock, for the most part, is good on CD. But classical, just no way can it match Lps.

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