Art, can you explain further Vectoring is done?
>Also, it's important to not assume that any given groove is
>"vertical". As with all mechanical devices, tolerances are involved. IF
>a groove induces a stylus to meaningfully oscillate at some angle other
>than true perpendicular (+ or - the theoretical standard), then unnecesary
>low and high frequency noises will occur. This is remedied by continually
>adjusting the phase relationship of the stereo cartridge being used to
>track the grooves. I call the process "vectoring". It's extremely
>beneficial for ALL monaural grooves.