I would think that the machine could use those discs but the record speed would be limited to the max record speed allowed by the drive. I have an older Mac computer that has a 4X DVD record drive, and I can use blank DVDs rated at 16X. It doesn't record at 16X but it can still use the discs.
I have a Denon Professional DN-C550R CD recorder, manufactured in 2007, with a new "recordable/rewritable" drive installed in 2009. I realize that I can use "music" or "data" discs on this unit (has defeatable SCMS), but what speed? I have been using MAM-A (Mitsui) 1x-12x Digital Audio Gold (they are actually made for 'consumer recorders'), but I wanted to know if can use the Taiyo Yuden 52x Premium discs that I use for my computer. I used 52x speed CD-Rs when I first got this unit and I think that they may have had something to do with the C550Rs 'record' drive dying prematurely.
So, can I use 52x CD-Rs safely on this unit, even though it records at 1x or 2x?
By the way, does anyone know who manufactured the burn drive in this unit?
Thank you for your time,