Why does my organ cabinet hum?

Greenlander · Post by **Greenlander** » Fri Nov 19, 2004 5:19 am

I suspect that this has a really obvious answer, but my electrical knowledge is close to zero. Anyways:

I have a hammond organ and a separate Sharma (leslie type) speaker cabinet. When I connect the two and use the speakers in the Sharma, there's a constant hum. Not a buzzing or familiar amp noise, but a mid-pitched hum is the best way I can describe it.

I have the feeling that I've read an explanation for this before and that it has something to do with a mismatch between the power or....................shit I dunno.

Anyone know what I'm talking about?

Scodiddly · Post by **Scodiddly** » Fri Nov 19, 2004 5:23 am

Hammonds are a little tricky to ground. If you've still got an ungrounded plug, try turning it around. Old ungrounded equipment sort of fakes a ground by making a capacitor connection to one side of the AC, and of course it works a lot better if that side is the neutral side.

Greenlander · Post by **Greenlander** » Fri Nov 19, 2004 7:39 am

Scodiddly wrote:Hammonds are a little tricky to ground. If you've still got an ungrounded plug, try turning it around. Old ungrounded equipment sort of fakes a ground by making a capacitor connection to one side of the AC, and of course it works a lot better if that side is the neutral side.

Capacitor? Is that French? I'm joking, but I really know very little about this.

Can you really just turn them around? See, I'm in Ireland and our plugs are different, hmm.

The Hammond has it's own speakers and this only happens when I'm using the Sharma, but you think this is down to the Hammond's grounding itself?

GLEA · Post by **GLEA** » Fri Nov 19, 2004 10:08 am

It doesn't know the words?

JGriffin · Post by **JGriffin** » Fri Nov 19, 2004 11:27 am

GLEA wrote:It doesn't know the words?

Damn you. I was just about to say that.

andyg666 · Post by **andyg666** » Fri Nov 19, 2004 12:10 pm

dwlb wrote:
GLEA wrote:It doesn't know the words?
Damn you. I was just about to say that.

DAMN YOU BOTH! I was just about to say that too...

Greenlander · Post by **Greenlander** » Sat Nov 20, 2004 5:00 am

andyg666 wrote:
dwlb wrote:
GLEA wrote:It doesn't know the words?
Damn you. I was just about to say that.
DAMN YOU BOTH! I was just about to say that too...

Ok, what reference am I missing out on exactly?

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