nm.... found my answer... for anyone who is interested here's a snippet from
CDR Info's Review...
>>
YAMAHA has chosen a rather short supported writing speed list. The drive supports 1X, 4X, 8X, 16X (CLV) and 44X (CAV) writing speeds. There aren't any selectable speeds between 16X and 44X.
Not all discs are created equal: quality can vary greatly from brand to brand, and even from batch to batch. Yamaha's Optimum Write Speed Control function takes care of this problems and makes it easy to record at the highest possible quality for the media you choose.
Simply choose to record at maximum speed and let the recorder automatically throttle down if it feels a particular disc should be recorded at a slower speed.
YAMAHA explains that when OWSC (Optimum Writing Control ) is enabled, the drive will select automatically the best maximum possible recording speed from 8X, 16X (CLV), 20X, 24X, 32X, 36X, 40X and 44X (CAV), as the right graph shows.
The Optimum Writing Control system, determines the optimum writing speed for the disc inserted. The feature can be disabled through Nero software, and as a result, user will be able to record all inserted media at the maximum speed (44X). With OWSC on/off, you can select all recording speeds (1X-44X). When OWSC in enabled and a low quality media being used, Nero will report the drop of recording speed, usually down to 16X
<<