In the following tests, we check the drive's behavior when it comes to reading
scratched / defective discs. The test discs we use are the ABEX series
from ALMEDIO.
- ABEX TCD-721R

Errors total
|
Num: 5810465
|
Errors (Loudness) dB(A)
|
Num: 85365
|
Avg:-54.2 dB(A)
|
Max: -11.7 dB(A)
|
Error Muting Samples
|
Num: 18084
|
Avg: 1.9 Samples
|
Max: 746 Samples
|
Skips Samples
|
Num: 1887
|
Avg: 8.1 Samples
|
Max: 576 Samples
|
Total Test Result |
55.0 points (of 100.0 maximum) |
C2 Accuracy |
60.4 % |
An extremely high total error count, one of the highest we have seen. The maximum error loudness level is also high at -11.7 dB(A). However, the skipped sample count of 1887 is truly woeful and it is no surprise that the drive has managed a total test result score of only 55.0 points out of 100.
- ABEX TCD-726


Errors total
|
Num: 0 |
Errors (Loudness) dB(A)
|
Num:0
|
Avg: 0 Samples
|
Max: 0 Samples
|
Error Muting Samples
|
Num: 0
|
Avg: 0 Samples
|
Max: 0 Samples
|
Skips Samples
|
Num: 0
|
Avg: 0 Samples
|
Max: 0 Samples
|
Total Test Result
|
100.0 points (out
of 100.0 maximum)
|
The behavior of drive was much better in this case where it managed to correct
all the disc's errors. The result was a perfect 100.
- CD-Check Audio Test Disc
The CD-Check Test Disc is a very useful tool for evaluating the Sound Reproduction
/ Error correction capabilities of a CD player. The disc offers a signal combination
with disc error patterns to rate the drive's ability to read music and reproduce
it completely. Five tracks on the disc contain a sequence of progressively
difficult tests. These tracks are referred as Check Level -1 through Check
Level -5.
The
tracks are reproduced (played) through a software multimedia player
(i.e. Windows Media Player). Each level is considered as passed, if the tone
coming
out
from the speakers is smooth, continuous without interruptions, skipping or
looping. The higher the Check Level passed, the more reliable the sound reproduction
of the tested device.
Error Level
|
1
|
2
|
3
|
4
|
5
|
TEAC DV-W516GB
|
5/5
|
5/5
|
5/5
|
0/5
|
0/5
|
The drive passed only the first three Check Levels of the test. The performance
reveals average performance with the specific test disc. The fourth and the
fifth levels include an error size of 1.125mm and 1.500mm respectively, and
the drive produced continues audible clicks over those tracks.