Azimuth and the Fozgometer

Hi, I have a cardas test record and a meter. What do I plug the leads of the meter into? RCA Preamp outputs on each channel and compare the results? Then repeat?

I just did it by ear, it's very close as it is, but may have tweeked it for the better (slightly tigher focus now)

I've regularly been able to reproduce the minimal crosstalk position (as measured by a Wally Analog shop) when adjusting by ear (and yes, the final adjustments are VERY small). The Fozgometer is faster, easier to use and less expensive than Wally's device, but unless it's more accurate it wouldn't seem to offer much value for me.

It would be fun to play with, but I personally wouldn't drop $250 just for that. YMMV of course...

I agree with Doug. Someone once told me in my Shure cartridge days (when we eyeballed everything!) that unless the cartridge was obviously "tilted" ;--) it would be "just fine". So for me, everything was "just fine" for many years.

John, the track I use on the Cardas record is No. 3 on Side 2. It's actually 32 concentric (independent) grooves, so you can drop the stylus into any one of them and it will provide a continuous signal of out-of-phase white noise. If you can set your preamp to "mono", you can take a signal out of one (either L or R) of the main outs starting with the main volume at minimum until you find the best meter range setting (unfortunately the tape outs on most preamps will remain in stereo even when the preamp is set to mono ;--) Then you adjust the azimuth for the lowest meter reading. If yur preamp doesn't have a mono setting, then you can put a 'Y' connector on either the main outs or the tape outs and hook the meter to the 'combined' leg of the 'Y'.

Does anyone have any experience using an oscilliscope to set azimuth?

the only problem with the whole 'minimal crosstalk' approach (which i have used) is that it's only close to optimal. i have found that i can eyeball azimuth typically as close as when i measure minimal crosstalk.

dead on azimuth is where the phase is aligned, not gain. the image snaps in based on phase being equal in each channel.

i suppose that the Fozgometer must somehow measure phase.

i have the new Talea tonearm with dynamically adjustable azimuth. i know of no other arm which allows one to adjust azimuth while listening. i watched the arm designer use this to dial in azimuth and it really works.