Dual Turntable Hum

[maff]

I just bought a Dual 601 turntable at a yard sale.


The TT seems to work just that there is a hum when the arm reaches the record and while it is playing. While the arm is moving towards the record there is no hum.

Anyone what the problem might be?

 

[grumpy]

Let me guess. It has Grado cartridge on it.

Grumpy

 

[maff]

I am not sure what cartridge it has.

All I know is that hte brand of the cartridge is Shure.

 

[grumpy]

Is the table grounded ?

 

[maff]

I do not think the turntable is grounded.

There is no ground wire ont he turntable.

Is there some way to add a ground wire?

 

[maff]

Anyone else have any ideas?

 

[Don C]

Grumpy has set you onto the right track, if there is no ground wire, that's probably the problem.

 

[BKville]

I believe Grumpy is right... The only time I've experienced "Hum" on any turntable is because of it's ground wire...

I think there is a thread on how to wire a ground here somewhere... I don't know which models of Dual's though..



Later, Brent

 

[maff]

I have a Dual 601 TT.

Anyone know how Imight ground the TT?

 

[grumpy]

I would have to dig up a 601 manual around here to find out.

 

[BKville]

Here's a nice Dual website...



http://www.compassnet.com/concept/index.html

 

[maff]

Anyone know the quality of the Dual 601 TT?

 

[grumpy]

Its pretty decent turntable and probably worth replacing the ground if that what the problem is.

Do you see a single strand of wire coming out from the back of the table where the power plug is ? If so that is the ground.

 

[Dan ʕ•ᴥ•ʔ]

Even if the ground wire is broken off externally, more than likely lifting the chassis out of the box will reveal where it went. I bet its simply screwed to the chassis base somewhere near the motor.