From this page and for the following we start our Blu-ray disc tests with the Sony BWU-300S v1.0d drive. We remind you that the drive supports 8x BD-R SL and DL recording with specific media. The discs we used for this test were kindly provided by Mitsubishi Kangaku Media (MKM), the manufacturer of the popular Verbatim branded discs, Moser Baer India, Panasonic and Imation/TDK.

For the first test we used the Verbatim BD-R 25GB certified for 2x burning (VERBATIMw (000)).The specific disc has been manufactured using the "Low-To-High" (LTH) process. The LTH write-once BD-R media feature an organic dye recording layer, making them different that the currently available BD-R discs that use inorganic materials.

Notice that not all the Blu-Ray drives can read the LTH BD-R discs. That because the reproduced signal while reading the discs has a LTH (Low to High) polarity. However, latest hardware as well as firmware upgrades to existing players/recorders could add support for LTH recording.

The advantages of the LTH manufacturing technology is that it can be applied without requiring large-scale manufacturing plant investments, allowing for using modified CD-R and DVD-R manufacturing equipment.

The "Low to High" (LTH, in groove recording) specifications for recording at 2x/4x have been released by the Blu-ray Disc Association.

- Media Info

- Writing - 2x (2.00x average) in 45:14min

- Reading - 2X (2.00X average)