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Grado ZF3 cartridge wiring

107.137.13.250
Posted on January 13, 2017 at 16:30:27
waltern
Audiophile

Posts: 3
Joined: January 13, 2017
 I've recently acquired a Project 1.2 turntable with a Grado ZF3 cartridge - can anyone confirm the wiring below is correct?

Looking at the mounted cartridge from the back (in normal playing position)

Blue
.............Green
White
.............Red

Thanks in advance!

 

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RE: Grado ZF3 cartridge wiring, posted on January 13, 2017 at 17:18:57
BCR
Audiophile

Posts: 2446
Location: connecticut
Joined: April 7, 2009
 That looks upside down. Here are the connections looking at the bottom of the cartridge at the rear.
Blue wire to left ground
Green wire to right ground
White wire to left hot
Red wire to right hot

 

Yep, posted on January 13, 2017 at 18:18:45
Awe-d-o-file
Dealer

Posts: 21037
Location: 50 miles west of DC
Joined: January 10, 2004



polarity is inverted on his. Grados are all the same lke this. So looking at my pic

top left red
top right white
bottom left green
bottom right blue



ET

"If at first you don't succeed, keep on sucking till you do suck seed" - Curly Howard 1936

 

RE: Yep, posted on January 13, 2017 at 20:43:46
waltern
Audiophile

Posts: 3
Joined: January 13, 2017
 Thanks for the replies!

Next (dumb?) question is, does it matter that it's hooked up as-is ("upside down"?)

Left is still left and right is still right, and they're in phase with each other, correct?

(I'd rather not risk breaking any wires changing them around if I don't have to...)

 

RE: Yep, posted on January 13, 2017 at 21:30:22
John Elison
Audiophile

Posts: 23900
Location: Central Kentucky
Joined: December 20, 2000
Contributor
  Since: January 29, 2004
 If you have to ask that question, it obviously doesn't matter!

 

RE: Yep, posted on January 14, 2017 at 11:55:36
flood2
Audiophile

Posts: 2558
Joined: January 11, 2011
 No it doesn't matter. The polarity can and does get reversed at various stages up to the cut (and even in your playback equipment so in fact you might find some recordings are now "absolute phase" correct.
Some people believe that having "absolute" phase matched is important. The only important thing is not to mix phase between channels as this now means that your channels are out of phase with each other and obviously destroys your stereo soundstage - but you are already aware of that.
Regards Anthony

"Beauty is Truth, Truth Beauty.." Keats

 

The ONLY way to know for certain..., posted on January 15, 2017 at 06:39:33
samstone
Audiophile

Posts: 924
Location: midwest inner city
Joined: August 11, 2002
 Is to use an ohm meter. Harbor freight sells a cheap one that works just fine for 5.99. Disconnect each lead and verify less than half an ohm from the cartridge lead to the RCA ends. The positive leads for each channel should be on the center line and the negative on the outer shells.
I have seen this wrong on tables straights out the box. On Music-Halls, Sotas, and Regas. Rare but possible.
With the POS/neg reversed the sound will not be a huge difference. It will almost give an off-center feel.

 

RE: The ONLY way to know for certain..., posted on January 15, 2017 at 18:06:49
waltern
Audiophile

Posts: 3
Joined: January 13, 2017
 Thanks for the tip! - I'm pretty sensitive to the "hollow" out of phase sound, and am confident I'm OK there.

However, I realized I was incorrect in my earlier post - the "upside down" wiring reverses the Left and Right channels! - after fixing that (I just reversed the amp RCA inputs - again, I'm a little afraid to mess with and potentially break the cartridge wires) and doing some listening carefully comparing the same songs on the turntable and my iPod everything seems fine now.

 

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