@halcroÂ
Recommended VTF for the MFG61 is 1.5g plus/minus 0.25g.
From memory initally I started at 1.7 due to the age of the cartridge - my rational is that the suspension can stiffen up with age ( or collapse - which will result in a low rider ) and therefore to avoid mistracking I start at the higher end ( I do this with new cartridges as well ).
Then once I am happy it is running well and tracking well, after running in I'll lower the tracking force.
I'm pretty sure I ended up around 1.6gm.
Dont forget when you adjust VTF you change the VTA, and it needs adjusting. For correct tracking force I use "feel" rather than frequency response - in other words at what VTF does the cartridge sound like its tracking securely but not slugged ( too heavy ).
When you say 40ohms loading - do you mean 40k ?
I would suggest stick to 47k. This is the recommended load ( for 61 )
Do you have the specs for the 610 ?? I'm curious to know whether the cartrdiges are the same.
Recommended VTF for the MFG61 is 1.5g plus/minus 0.25g.
From memory initally I started at 1.7 due to the age of the cartridge - my rational is that the suspension can stiffen up with age ( or collapse - which will result in a low rider ) and therefore to avoid mistracking I start at the higher end ( I do this with new cartridges as well ).
Then once I am happy it is running well and tracking well, after running in I'll lower the tracking force.
I'm pretty sure I ended up around 1.6gm.
Dont forget when you adjust VTF you change the VTA, and it needs adjusting. For correct tracking force I use "feel" rather than frequency response - in other words at what VTF does the cartridge sound like its tracking securely but not slugged ( too heavy ).
When you say 40ohms loading - do you mean 40k ?
I would suggest stick to 47k. This is the recommended load ( for 61 )
Do you have the specs for the 610 ?? I'm curious to know whether the cartrdiges are the same.

