Spiral Grove Centroid vs Kuzma 4-Point (on GPA Monaco 2.0)

[mtemur]

Hi, the bottom of the arm is not tapered like the top of the arm. So I use a device like the GH acoustics pictured in thekongs post just above.

I do agree, a line would make it even easier.

Here's a pic:

View attachment 110434

Aah ok 'jfrech', if the bottom of the Kuzma tonearm arm is not tapered and perfectly horizontally straight then there is no issue with measuring if the tonearm arm is level or not to the platter.

No, Kuzma 4P is tapered on all sides. Otherwise azimuth adjustment would ruin all the parameters cause it turns the whole arm tube. Unfortunately @jfrech you tilted up your toneram.

 

[mtemur]

I use a laser on a microphone stand along with the acrylic gauge mentioned above.

I wonder how can you be sure tonearm and platter are parallel using this method cause the pictures you shared only approves that tonearms are manufactured straight not crooked. That doesn’t mean they’re also parallel to the platter which we are trying to achieve as a starting point.

 

[Bonesy Jonesy]

No, Kuzma 4P is tapered on all sides. Otherwise azimuth adjustment would ruin all the parameters cause it turns the whole arm tube. Unfortunately @jfrech you tilted up your toneram.

Ooo wow. Thank god I haven't changed the VTA yet . Thank you 'mtemur'.

 

[Kcin]

I wonder how can you be sure tonearm and platter are parallel using this method cause the pictures you shared only approves that tonearms are manufactured straight not crooked. That doesn’t mean they’re also parallel to the platter which we are trying to achieve as a starting point.

Multilple iterations between laser mark/ platter./ arm and gauge.

 

[jfrech]

No, Kuzma 4P is tapered on all sides. Otherwise azimuth adjustment would ruin all the parameters cause it turns the whole arm tube. Unfortunately @jfrech you tilted up your toneram.

Well. You are correct upon further examination....