I think Peter and Viridian are both correct but are differing in approaches. I use both. When I get a new cart or change carts, I set my SRA by ear first. That process takes a few days of listening and experimenting. I then check my SRA setting with a digital microscope. By ear I usually have it set around 91 degrees. I change the SRA to 92 degrees using the scope, but of course marking my original placement for reference.
So far, every time I have changed to 92 degrees using the scope, the sound dramatically improves - especially in transparency, air, decay and realism. I'm definitely in the SRA to 92 degrees camp.
So far, every time I have changed to 92 degrees using the scope, the sound dramatically improves - especially in transparency, air, decay and realism. I'm definitely in the SRA to 92 degrees camp.