That Crazy Little Thing Called "Azimuth" Part 2 In Part 1 we
explained the importance of proper azimuth setup. Now, on to how
to achieve it! While using a digital oscilloscope is the most
accurate method, it also requires you to spend hundreds of
dollars to buy one and then you have to learn how to use it.
That's not really necessary for most analog devotees, and so
we're not going to go into the details here. If you insist,
you'll have to buy one and figure it out using the methodology
that will be described, which is generally applicable to
whichever way you choose to go. First, you need an accurate test
record that includes separate left and right channel 1K (1000Hz)
modulated grooves. 1K is the standard frequency used to measure
crosstalk. These include Analogue Productions' The Ultimate
Analogue Test Record(AAPT 1) and the Clearaudio Azimuth
Optimizer Test Record. I've used the first one but have not yet
tried Clearaudio's. The goal is to measure the output of both
the modulated and unmodulated channels