This is in documentation
Maximum 24t DVD-R recording speed
You can high speed record from the HDD to a DVD-R using 24k
recording speed on DVD-R discs that are compatible with high
speed recording (When EP mode and Dolby Digital is selected).
Programs stored on the HDD can be quickly dubbed and stored on
a DVD-R.
Since max time on one disc is 6h it actualy means in "pc dvd writer" terminology that this recorder can record 4x speed. Can abybody confirm that this recorder did actualy record on 4x medium full DVD-R disc in something little more than 16min when high speed dubbing from HDD ?