I thought the 1620 was riplocked on -R and +R media, so I have never really done much reading with it. But tonight I read a pressed movie DVD and it read at 16X max, which I didn't even know it would do. Then I put in an old memorex 4X-R disc, and it read it at 16X max also ! I then put in a recent +R disc, and it was back to super slow, like I remembered. I put back in the pressed disc, and then the old DVD-R, and both were 16X max, and sweet read curves at that. Put back in 2 more "new" -R and +R discs, and the speed was back to 8X I think it was.
Whats up with this ?
EDIT: I tried the disc again, and no go at 16X. Put the pressed disc back in, 16OK, -R back in, and no go. Somehow, that disc read TWICE at 16X. Something weird somewhere. BTW, I am using AnyDVD, which I don't think would have anything to do with it, but there is an intermittant ability to read -R media at 16X - somebody know how to do it reliably ?
EDIT Again: I figured it out. The old -R had a problem at about the 4.2 gig mark, and generated a "no additional sense" read error in CDspeed quality scan. I did a transfer test right after that - voila, fast read, of course up until the read error, where it speeded down and gave the same error. But, perhaps a trick can be applied here to get around rip-lock until better firmware emerges? Somehow the drive shifts out of "locked speed" mode if a read error is encountered.
The transfer was stopped right before the read error was about to happen - I ran the quality test right before the transfer test.