The importance of azimuth


Not a particularly sexy topic, I know, but I recently had a rather ear-opening experience with my VPI Aries 2/JMW-10/Denon 103D. I been enjoying playing records for hours--sometimes days--on end during the few weeks I've had the new 'table and arm (the cart I've had for years). But after endless tinkering with the VTA (adjustable during play--perfect for neurotics like me), even at the "ideal" setting for any given record, there was an unpleasant edge to the sound. It was almost as if everything was digitally remastered!

Needless to add, this was not exactly what I'd hoped for in a record-playing system, though it *still* sounded leagues better than my digital rig (Sony SCD-1), even with the latter playing SACD (no, it does *not* sound as good as vinyl--not yet, anyway). I added some damping fluid. No audible change.

Then it occurred to me (duh!). I'd only made a token adjustment of azimuth when I'd set up the 'table. It looked straight, the channels were well-separated and balanced, and basically I didn't want to screw around with it.

Big mistake. (I'm sure you were all mouthing those words already.) A loosening of the set screw and a bit of twisting, and...everything looked the same. Stylus descended to record...drum roll...oh...my...God! Voices and instruments beefed up and acquired shape, tape hiss magically appeared (where appropriate), and hard left and right images seemed to float about a foot outside the speakers.

I'm sure there are more scientific ways of setting azimuth, but I'm now in one of those situations where everything sounds so fulfilling of my expecations that I don't want to lose it.

Folks, never forget that in set-up *everything* matters. These are tiny increments of adjustment we're talking about here. Take care with everything and your hardware will reward you with the gorgeous sound we know is inside those records.
bublitchki
If I can get pics & dimensions, I'm willing to bet I can make it. Does anybodt have one?

Joe
with the vpi scout, azimuth is adjusted by rotating the counterweight. i visually inspect the cart, and also the counterweights by the pivot. things sound fine, centered, etc, but im wondering what more i might do to improve what admittedly at this time is a pretty casual adjustment. i particulary am concerned that vta adjustment doesn't seem to have much effect, and i don't know if that's because of my cart(a benz glider l2) or because my azimuth is off. i'd be interested in what other scout owners azimuth and vta experiences have been.
Rcrump's fascinating post and Albert's response got me started poking around. I found this methodology for setting azimuth by measuring crosstalk in the VA FAQ's:

http://www.audioasylum.com/audio/vinyl/messages/138751.html

Not ideal, since it measures at the speaker terminals and therefore measures preamp/interconnect/amp/RFI imbalances, but certainly better than just eyeballing it. Comments anyone?
Dougdeacon. I think Bob's post was describing the Audioquest as a electronic rather than mechanical tool.

I found this on a German web site about the Wallytractor;

http://www.simplyblack.net/

When the site opens, click on:

Wallys Vinyl corner and on the next page, select:

WallyAnalog Shop (std).

There you can view this electronic gizmo and download the complete instructions as a PDF.
Albert, I quite understood that Bob was describing an electronic device. Were you perhaps responding to Jphii's suggestion that he could make one? Like you, I doubt that his woodworking skills would suffice, formidable though they be! :)

Thanks for finding Wally's device. I'd quite forgotten that he offered (offers?) that. It precisely addresses what we've been discussing, and his instructions cover the channel imbalance issue raised on the VA thread too. I'll be emailing Wally to find out if it's still available.