Set max speed on Sony drive?



I just installed a new Sony BD-5850 drive and the noise during regular DVD playback (using Media Center or Window Movie Player) is really annoying. Once the movie starts, the drive speeds up to max speed, then goes completely silent for a couple of minutes - just to jump back to full speed again.

Is there a way to limit the max speed of this drive to that it will always run, but remain on a low speed setting of x1 or x2?