1. Package, Installation - Teac DV-W50D
Teac DV-W50D and Memorex Dual-X1 - Page 1
- Teac DV-W50D
Teac's
new DVD-Recorder is a multiformat drive supporting both DVD+R and DVD-R formats.
The Teac DV-W50D takes the DVD writing to a new level by supporting
maximum DVD+R and DVD-R writing speed at 4X. It also writes at 2.4X to DVD+RW
and 2X to DVD-RW. Thus the new Teac DV-W50D plays DVD movies at the speed of
12X. The drive is capable of recording to CD-R media at 16X speed, rewriting
to CD-RW media at 10X speed, combined with a higher read speed for CDs at 32X
speed maximum. The TEAC DVD±RW drive utilizes an IDE/ATAPI interface
for easy integration and upgrades.
- Drive features
Write Speeds
|
DVD
|
DVD+R: 4X CLV
DVD+RW: 2.4X CLV
DVD-R: 4X CLV
DVD-RW: 2X CLV
|
CD
|
CD-R: 16X CLV
CD-RW: 10X CLV (High Speed)
|
|
Read Speeds
|
DVD
|
DVD-ROM: 12X CAV
DVD-R/-RW: 6X CAV
DVD+R/+RW: 6X CAV
|
CD
|
32X CAV
|
Interface
|
IDE/ATAPI
|
Write Support
|
Track at Once, Disk at Once
Multi-Session and Incremental
EasyWrite (Mount Rainier) Supported |
Read Support
|
DVD |
DVD-ROM(single/dual layer)
DVD+R,DVD+RW
DVD-R, DVD-RW |
| CD |
8cm/12cm, Audio CD,CD-TEXT
CD-ROM Mode-1,Mode-2
(Form 1, Form 2)
CD-ROM XA, CD-R, CD-RW,
Video-CD, CD Extra/CD Plus,
CD-I, CD-DA, CD-ROM, |
Write Verification
|
Optimum Power Control To Dynamically Adjust
Laser Write Power |
|
Access Time (Random Average)
|
DVD-ROM
|
160msec
|
CD-ROM
|
160msec
|
Data Buffer (size)
|
2Mbytes
|
Dimensions
|
5.83”(W) x 1.67”(H) x 7.78” (D)
|
Teac DV-W50D supports writing of all DVD-R/RW,DVD+R/RW
and CD-R/RW media. The drive is using
a 2MB data buffer to prevent buffer underun errors
which may be occurred at the writing process.
Teac DV-W50D uses the RPC II region control allowing user to change the drive's
region
5 times in total. For our tests, we set the region code to 2 (Europe).
The
drive supports as a reader all CD and DVD recordable/rewritable discs except
DVD-RAM and
CD+G.
- The package
The
European retail package includes the Teac DV-W50D drive, user's manual,
safety notice, mounting screws, the usual internal audio cable and an IDE
cable.
Thus it contains two blank discs, an 700MB Teac CD-R and a Teac DVD-R 4.7GB.
The package also includes softwares such as Intervideo WinDVD 4 for video
playback, Pinnacle Studio V.8 for video editing /authoring and the
most known Nero Burning
Rom.
On the front panel of the drive there is the disc loading tray, the head
phone jack and volume, the eject button, the emergency eject hole and the busy/write
LED indicator.
On the loading disc tray you can see the DVD-ROM logo in the middle of the
tray and on the right side the ultra speed and RE-writable logos while the
TEAC logo is placed on the left side of the tray.
On the rear panel there are the analog and digital output (SPDIF), the IDE
connector, the device jumper configuration and the power input.
After removing the screws and taking off the top of the drive voids the drive's
warranty. We make the attempt just for reference reasons. You can enlarge the
image by clicking on it.
The main chipset belongs to the same series with this one of
the Pioneer
DVR-A06 DVD±
RW recorder.
- Installation
The Teac drive was connected on IDE 1 of our test
PC as "Master" and worked in Ultra DMA Mode 2 transfer mode.
The drive was identified
as "TEAC DV-W50D" under
WinXP.To make the reading/writing tests we used the firmware version 1.05.
2. Package, Installation - Memorex Dual-X1
Teac DV-W50D and Memorex Dual-X1 - Page 2
- Memorex Dual-X1
Memorex,
is the famous provider of CD-R and CD-RW media. Its range of products includes
a large selection of optical storage products,
computer peripherals and accessories for both the private consumer and the
professional user. The Memorex product line includes IT CD-R/RWs, floppy discs,
Digital Audio CD-Rs, Mini Discs and Compact Flash/ Smart Media Cards. Its hardware
portfolio includes the latest state-of-the-art CD-RW models and combination
drives (DVD+CD-R/RW+CD-ROM), multimedia keyboards and accessories.
Memorex decided to enter the dual format DVD burner market with
the new model Dual-X1. The drive parts are borrowed from the well known Pioneer
DVR-A06 which means that Memorex has all the features for success. It is capable
to write DVD-R and DVD+R at the maximum speed of 4X, DVD-RW at 2X, DVD+RW at
2,4X. The drive also supports CD-R writing at 16X and CD-RW at 10X. Apart from
burner Memorex can play DVD-ROM at the maximum speed of 12X and CD-ROM at 32X.
Bellow are all the burner's features thus our thorough test.
- Drive features
Dual Format Recording: Memorex supports both DVD+R/RW and
DVD-R/RW discs.
Recording Speeds:
- DVD±R: 4X
- DVD+RW: 2.4X
- DVD-RW: 2X
- DVD-ROM: 12X
- CD-R: 16X
- CD-RW: 10X
- CD-ROM: 32X
Buffer Memory: Memorex Dual-X1
is equipped with 2MB of buffer memory.
Buffer
Underrun Protection:
The drive features buffer underrun management system,to eliminate the possibility
of buffer underruns errors.
Defect Management: The
drive features the DRT-DM (Distributed Real Time Defect Management)
system, to offer high reliability
recorded discs.
High Precision Servo System: Imbalanced
discs may cause vibration that affect performance at high speed
reading and wirting.To prevent these vibrations the drive use
the DRA technology
which
allows the precision
servo system to remain stable at high speed recording and playback.
Smart Laser Drive Technology:
The laser driver uses a pickup that incorporates a write strategy
control circuit to ensure stable write performance.
Liquid Crystal Tilt Technology:
The liquid crystal tilt mechanism provides accurate and reliable
operation with discs
that have been uneven curvature or thickness. This technology
used during both reading and writing process.
Memorex DualX-1 supports as a reader all CD-Rom/R/RW discs except the CD+G
. On the DVD format it doesn't supports DVD-Ram, all other DVD recordable/rewritable
discs are readable. Memorex uses the RPC II region control, allowing
user to change the
drive's
region
5 times
in
total.
For our
tests,
we set the
region
code
to 2
(Europe).
The supported writing formats are
Disc At Once, Track
At Once, Session At Once and Packet Writing
- The package
The
retail package includes the internal DVD recorder, a quick start guide,
installation map, mounting screws, IDE cable, audio cable , two blank Memorex
DVD+R 4X
and DVD+RW 2X media.
As for softwares the package includes Roxio's Digital Media Software Suite
with
Easy
CD&DVD
Creator
6,
DVD
Max
player,
PhotoSuite 5 and VideoWave Movie Creator.
By taking a look at the front panel of the drive, we are seeing that is
black while the loading tray is white.The originate of the drive is easily
identified
by
the
Memorex
logo which is placed
on
the left side of the tray. We can also remark the CD-RW, DVD+RW
and DVD-Rom logos.
On the rear panel there are the analog and digital output (SPDIF) , the IDE
connector, the device jumper configuration and the power input.
After removing the screws we can see the drive's internal design,
an action which of course voids the drive's warranty. Clicking the follow image
you can enlarge it for seeing the details.
The chipset of Memorex and Teac DV-W50D are of the same series.
- Installation
Memorex was connected on IDE1 of our test PC as "Master" and worked
in Ultra DMA Mode 2 transfer mode.
The drive was identified as "Memorex DVD+/-RW Dual-X1"under WinXP.
To
make the
reading/writing tests we used the firmware version 1.05
3. Data CD Reading Tests
Teac DV-W50D and Memorex Dual-X1 - Page 3
Data CD Reading Tests
Both drives support 32x CAV reading for CD-ROM/-R media. As
we can see from the CD Speed results in the graph above both drives have approximately
the
same
performance
with
the
80min
pressed
disc. The reported start reading
speed
was
15.04x for Teac and 15.01x for Memorex while the end speed was
33.03x and 33.97x respectively.
In the same task, the seek times for Teac are lower which means that is
faster than Memorex.
At the Random mode the difference wasn't very big but in the other two modes
the 8ms difference is a considerable value.
With the 80min CD-R media the results are almost the same with
the previous test. Both drives needed the same time to finish the task , with
reported average speed 25.54X for Teac and 25.56X
for Memorex.
In the graph above we can see the seek time for all modes
of both drives with an 80min CD-R media. Teac is again a little faster than
Memorex but not with great differences.
For the RW reading test we used an Asus 4x-12X HS-RW media and
Nero CDSpeed software. Ending the test we saw that the drives had similar performance
results with a slight difference at the start speed which was 15.44X for Teac
and 14.66 for Memorex. End and average speed was almost the same.
4. CD Error Correction Tests - Teac DV-W50D
Teac DV-W50D
and Memorex
Dual-X1 - Page 4
Error Correction Tests
Teac DV-W50D
In the following tests we checked the drive's behavior while was reading
scratched / defected discs. The test discs we used was the ABEX Test Discs
series
from ALMEDIO.
- ABEX TCD-721R
|
Errors total
|
Num: 824276
|
|
Errors (Loudness) dB(A)
|
Num: 46309
|
Avg: -73.6 dB(A)
|
Max: -14.6 dB(A)
|
|
Error Muting Samples
|
Num: 2616
|
Avg: 1.1 Samples
|
Max: 40 Samples
|
|
Skips Samples
|
Num:2
|
Avg:6 Samples
|
Max: 6 Samples
|
|
Total Test Result
|
72.1 points (of 100.0 maximum)
|
Teac DV-W50D performed quite well. By taking a look in the graph we can see
that most of the red spikes are approximately at -60dB(A). The reported average
loudness error was -73.6dB(A) while the
average
error
muting
samples
was 1.1, a level that is normal and far beyond from audible problems in the
output signal, according to EAC author.
The total score
of the drive is 72.1, an assertive score.
- ABEX TCD-726
|
Errors total
|
Num: 10680
|
|
Errors (Loudness) dB(A)
|
Num:254
|
Avg:-63.9 dB(A)
|
Max:-12.0 dB(A)
|
|
Error Muting Samples
|
Num: 70
|
Avg: 36.5 Samples
|
Max:1185 Samples
|
|
Skips Samples
|
Num: 2
|
Avg:24.0 Samples
|
Max:24 Samples
|
|
Total Test Result
|
74.7 points (of 100.0 maximum)
|
The ABEX TCD-726 test disc contains defects and artificial fingerprints. Once
again the drive performed very well, with the average loudness being at 63.9dB(A).
The error muting samples was 36.5, an acceptable number.
- Summary
|
Test Disc
|
Reading Speed
|
Score
|
|
ABEX TCD-721R
|
Max
|
72.1
|
|
ABEX TCD-726
|
74.7
|
|
Average Score
|
73.4
|
Combining the two scores from the tests the Teac drive came off with an average
score of 73.4/100 using the 721R and 726 Abex test discs.
- C2 Information accuracy
At the end of the procedure we used the ABEX TCD-721R test disc
with NeroCdSpeed advanced DAE quality test . The results that we took are reporting
a good score of 89.4/100 while, which is
a very
good score.
- 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 abilities 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 files are reproduced (played) through a software multimedia player (i.e.
Windows Media Player, PowerDVD). 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.
Each file was played 5 times. A 5/5 score donates that the file was played
flawlessly without problems.
|
Error Level
|
1
|
2
|
3
|
4
|
5
|
|
Teac DV-W50D
|
5/5
|
5/5
|
5/5
|
5/5
|
4/5
|
Teac DV-W50D successfully passed the first four Check Levels of the test.
The fifth level includes
an error size of 1.500mm which the drive ignored it 4 times out of 5. That
means that the
drive has a perfect sound reproduction and an excellent error correction.
5. CD Error Correction Tests - Memorex Dual-X1
Teac DV-W50D
and Memorex
Dual-X1 - Page 5
Error Correction Tests
Memorex Dual-X1
In the following tests we examined the error correction capabilities of the
Memorex drive , while reading scratched / defected discs.The specific test discs
are ABEX Test Discs series
from ALMEDIO.
- ABEX TCD-721R
|
Errors total
|
Num: 873205
|
|
Errors (Loudness) dB(A)
|
Num: 48752
|
Avg:-72.9 dB(A)
|
Max: -13.6 dB(A)
|
|
Error Muting Samples
|
Num: 2809
|
Avg: 1.1 Samples
|
Max: 40 Samples
|
|
Skips Samples
|
Num:2
|
Avg:6.0 Samples
|
Max:6 Samples
|
|
Total Test Result
|
72.0 points (of 100.0 maximum)
|
Memorex Dual-X1 drive performed well with the 721R test disc, although the
specific disc is always hard for drives to be read accurately. The average
error loudness was -73.6dB(A), a result that according to EAC author is acceptable
and does not lead to any audible problems in the output signal. There were
a few muted errors but none skipped. The total test result of the drive is 72.0 points
, almost the same with Teac's.
- ABEX TCD-726
|
Errors total
|
Num: 55197
|
|
Errors (Loudness) dB(A)
|
Num:2747
|
Avg:-71.2 dB(A)
|
Max:-48.5 dB(A)
|
|
Error Muting Samples
|
Num: 257
|
Avg: 1.0 Samples
|
Max: 2 Samples
|
|
Skips Samples
|
Num: 0
|
Avg: 0 Samples
|
Max:0 Samples
|
|
Total Test Result
|
82.3 points (of 100.0 maximum)
|
On this test the drive finished very fast and with less reading problem than
Teac. The
average
error
loudness
with
the
726
test
disc
was
-71.2dB(A)
while
only
few
errors muted but none skipped.
The total score of the drive is 82.3, a score which better than
Teac's.
- Summary
|
Test Disc
|
Reading Speed
|
Score
|
|
ABEX TCD-721R
|
Max
|
72.0
|
|
ABEX TCD-726
|
82.3
|
|
Average Score
|
77.15
|
The
Memorex gets an average score of 77.15 out of
100 at the reading error correction tests.
- C2 Information accuracy
Once again we used the ABEX TCD-721R test disc
with NeroCdSpeed advanced DAE quality test for making the comparison between
the two drives. This time the C2 Accuracy with the
Memorex drive
is 84.10%, which is a low percentage, and the quality score reaches the number
of 91.1/100.
- 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 abilities 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 files are reproduced (played) through a software multimedia player (i.e.
Windows Media Player, PowerDVD). 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.
Each file was played 5 times. A 5/5 score donates that the file was played
flawlessly without problems.
|
Error Level
|
1
|
2
|
3
|
4
|
5
|
|
Memorex Dual-X1
|
5/5
|
5/5
|
5/5
|
5/5
|
4/5
|
Memorex Dual-X1 managed to pass the first four Check Levels of the
test. At the fifth level, which includes an error size of 1.500mm, the
drive performed very well giving audible
clicks only once out of 5. The drive has also
a perfect sound reproduction and an excellent error correction as the previous
drive.
6. DVD reading tests
Teac DV-W50D and Memorex Dual-X1 - Page 6
DVD reading tests
Both drives support 12X maximum reading speed for the
DVD-Rom format. In the graph above we can see that the reported speed
is almost the same for both of them in all modes.
Teac is little faster than Memorex in all modes. The differences are not
very big except at the 1/3 mode where the two values differ for 7ns.
Teac and Memorex support 8X CAV reading for the dual layer DVD-ROM. The specific
DVD-ROM disc is PTP. In PTP the two layers are read sequentially with the
drive starting reading from the inner part of the disc, which is the beginning
of
each layer,
towards
the outer range, for each layer. Both drives use the same reading method and
after the end of the test, as we can conclude from the photo above, the results
we took are exactly the same.
From the seek time test, which we can see at the graph above, Teac is faster
than Memorex in the first two modes. At full mode both drives have the same
seek time.
- DVD Ripping Tests
We measured the DVD Ripping speed for both drives using the "Matrix" DVD
Video title and the DVD Decrypter software.
Such Teac as Memorex are fast on the DVD-Ripping process and
they needed the same time to finish the task.
- DVD Recordable/Rewritable Tests
The chart below shows the Nero CDSpeed results with the following media
According to the graph above we can see that both drives output exactly
the same reading speed for the DVD-RW and DVD+R media.On the other hand the
DVD-R
and
DVD+RW media were written at very similar speeds with Memorex being slightly
faster.
7. DVD Error Correction Tests - Teac DV-W50D
Teac DV-W50D
and Memorex
Dual-X1 - Page 7
DVD Error Correction
Tests
Teac DV-W50D
In the following tests we examined the DVD error correction capabilities of
the Teac DV-W50D drive. For the tests we used
CDVD Benchmark v1.21 and Nero CDSpeed . The reference test media comes from
ALMEDIO.
- Single Layer media
ABEX TDR-821
This is a single sided, single layer DVD-ROM with a 4.7GB capacity, in which
there are scratches with dimensions from 0.4 to 3.0 mm. The following transfer
rate picture comes from CDVD Benchmark v1.21 transfer rate test.
Teac DV-W50D managed to finish the reading test without encounter any problem.
The drive read the scratched disc fast and at the end of the test the reported
speed
was 13X. So the upshot is a great ability.
ABEX TDR-825
This is also a single sided, single layer DVD-ROM with a 4.7GB capacity.
The data structure of the disc is exactly the same as the TDR-821, with the
difference
that there not scratches on it but defected areas with dimensions from 0.5
to 1.1 mm. There also fingerprints sized from 65 to 75 micrometers.
Again the test was completed without any read errors. During the procedure
the reading speed was reduced from 10X to 5X on the fingerprint defected area,
but after
that
the
speed resumed and the test was finished successfully.
- Dual Layer media
ABEX TDR-841
This is a 8.5GB dual layer, single sided DVD-ROM disc with artificial scratches
with dimensions from 0.4 to 3.0mm, in both layers.
The reading procedure began with the speed of 3.5X. At the end of the first
layer the drive lower the speed in order to read the disc, an unreasonable
event because the specific area wasn't defective. Eventually the test was finished
without any reported problems.
ABEX TDR-845
The disc is a single sided, dual layer DVD-ROM disc with a capacity of 8.5GB.
The only difference between the TDR-845 and the TDR-841 is that the first includes
defected areas and fingerprints. The dimensions of the defected areas are ranged
from 0.5 to 1.1 mm and the fingerprints are sized from 65 to 75 micrometers.
During the test the drive attribute smoothly without difficulties achieving
the speed of 8X at the end of each layer. The reading process started at 3.5X.
ABEX TDV-541
The TDV-541 is a single sided, dual layer DVD-VIDEO disc, with capacity of
8.5GB. The disc is based upon the TDV-540 series which is designed for inspection
and adjustment of DVD-VIDEO players. The discs check the layer switch operation
from layer 0 to layer 1 and also include test pictures and test signals for
DVD sound files. The current TDV-541 checks also the error correction capabilities
of the drive and includes scratches from 0.4 to 3.0 mm.
The reading process started at 3.5X. The speed at the end of the first layer
was 8X. That means that the drive didn't need slow down to read the effected
area, which bypass without any reported problems.
ABEX TDV-545
The TDV-545 disc is based on the TDV-540 series. It is a single sided, dual
layer DVD-VIDEO disc with a capacity of 8.5GB. The TDV-545 includes artificial
black dots on the data surface, sized from 0.4 to 1.0 mm. It has also 65 - 75
micro meters fingerprints.
Black dots and fingerprints were not a problem for the drive. The speed at
the end of the first layer is at 8X while the reported average speed is 6.17X.
The test finished without any read errors.
8. DVD Error Correction Tests - Memorex Dual-X1
Teac DV-W50D
and Memorex
Dual-X1 - Page 8
DVD Error Correction
Tests
Memorex Dual-X1
In the following tests we examined the DVD error correction capabilities of
the Memorex DualX-1 drive. For the tests we used
CDVD Benchmark v1.21 and Nero CDSpeed . The reference test media comes from
ALMEDIO.
- Single Layer media
ABEX TDR-821
This is a single sided, single layer DVD-ROM with a 4.7GB capacity, in which
there are scratches with dimensions from 0.4 to 3.0 mm. The following transfer
rate picture comes from CDVD Benchmark v1.21. The reference test media comes
from
ALMEDIO.
The Memorex drive finished the reading test without any problems. During
the reading of the scratched area there were
no reported errors but right after that the speed decreased from 10X to 6X
for an unaccountable reason. Anywise the procedure finished quite well and
the performance was good.
ABEX TDR-825
This is also a single sided, single layer DVD-ROM with a 4.7GB capacity. The
data structure of the disc is exactly the same as the TDR-821, with the difference
that there not scratches on it but defected areas with dimensions from 0.5 to
1.1 mm. There also fingerprints sized from 65 to 75 micro meters.
The drive didn't face any problems to read the disc contents.The Memorex has
to reduce from 10X to 5X the reading speed in order to read a specific defected
area (fingerprint), but right after the speed increased once again to finish
the test with success.
- Dual Layer media
ABEX TDR-841
This is a 8.5GB dual layer, single sided DVD-ROM disc with artificial scratches
with dimensions from 0.4 to 3.0mm, in both layers.
Memorex Dual-X1 read the Abex 841 test disc fast without slowing down. No
read errors were reported.
The drive just ignored the defected areas.
ABEX TDR-845
The disc is a single sided, dual layer DVD-ROM disc with a capacity of 8.5GB.
The only difference between the TDR-845 and the TDR-841 is that the first includes
defected areas and fingerprints. The dimensions of the defected areas are ranged
from 0.5 to 1.1 mm and the fingerprints are sized from 65 to 75 micro meters.
As in the corresponding test with the ABEX TDR-825
(defected single layer DVD-ROM), the drive had no problems to finish the task
successfully. The reading speed was again set to 10X at the end of each layer.
ABEX TDV-541
The
TDV-541 is a single sided, dual layer DVD-VIDEO disc, with capacity of 8.5GB.
The disc is based upon the TDV-540 series which is designed for inspection
and adjustment of DVD-VIDEO players. The discs check the layer switch operation
from
layer 0 to layer 1 and also include test pictures and test signals for DVD
sound files. The current TDV-541 checks also the error correction capabilities
of the
drive and includes scratches from 0.4 to 3.0 mm.
After the end of the 541 test disc NeroCDSpeed reports that the average
reading speed is at 5.57X. The drive slowed down at the beginning of
the second
layer from 8X to 6X and finished the task with speed at 2.76X. The test finished
without any read errors.
ABEX TDV-545
The TDV-545 disc is based on the TDV-540 series. It is a single sided, dual
layer DVD-VIDEO disc with a capacity of 8.5GB. The TDV-545 includes artificial
black dots on the data surface, sized from 0.4 to 1.0 mm. It has also 65 - 75
micro meters fingerprints.
Memorex managed to pass the black dots and the fingerprints very easily.
The test was successful, with an 6.18X average speed.
9. Protected CD Tests
Teac DV-W50D
and Memorex
Dual-X1 - Page 9
Protected CD
Tests
We used CloneCD and 3 original CDs - Serious Sam 2 (SafeDisc 2), V-Rally
2 Expert (SecuROM 2) and NBA Jam Extreme (PSX) - in order
to test the reading time of the drives. The following pictures show the drive
reading/writing capabilities as CloneCD reports:
Teac DV-W50D |
 |
Memorex Dual X1 |
 |
- PSX Pressed Media
For this test we used the PSX game 'NBA Jam Extreme' and we ripped the image
to the HD with Alcohol 120%.Both drives needed the same time to finish the
image making process.
- SafeDisc v.2
- SecuROM Results
As we can see from the graphs above both drives gave back almost the same
time at the image making process. There is a small difference but not important
at the third test, with the SecuRom protection, where Teac was a little bit
faster than Memorex.
- Writing Tests
Both drives supports the DAO-RAW writing mode. For checking the drive's
EFM correction status, we used 3 different game titles with different SafeDisc
2 versions and the latest software patches installed. We also used the drive
as reader/writer at maximum reading/recording speed. The software we used after
making the images was Alcohol
120% for the burning procedure, and we burned 3 discs/titles at the maximum
speed with the Bypass EFM Error function enabled.
In the table below you can see whether the produced backups were working
(game installed / played normally), or not.
|
Game Title
|
Burner
|
SD2 Build
|
Settings
|
|
ByPass EFM Error On
|
ByPass EFM Error Off
|
|
Max Payne v1.05
|
Teac DV-W50D
|
v.2.50.020
|
OK
|
OK
|
|
Memorex Dual-X1
|
OK
|
OK
|
|
Serious Sam - The Second Encounter v1.07
|
Teac DV-W50D
|
v.2.60.052
|
OK
|
NO
|
|
Memorex Dual-X1
|
OK
|
NO
|
The Sims -
Unleashed
|
Teac DV-W50D
|
v2.80.010
|
OK
|
NO
|
|
Memorex Dual-X1
|
OK
|
NO
|
The produced backups with Alcohol 120% partially worked to the drives we
tested. Unfortunately both drives cannot create working backups of the last
two versions of SafeDisc
2. The SafeDisc v2.50 didn't seem to be a problem for the drives , as long
as the "Bypass
EFM error" feature
is enabled. In other case, the backup does not work.
10. DAE Tests
Teac DV-W50D
and Memorex
Dual-X1 - Page 10
DAE Tests
- Pressed and CDR AudioCD results
In this test we examine the DAE speed of each drive. The reported average
ripping speed with the pressed disc was 22.7X for Teac and 23X for Memorex. With
CD-R media, the average ripping speed was 14.4X for Teac and 14.2X for Memorex.
- EAC Secure Extract Ripping mode
EAC reports that the Teac and Memorex supports "Accurate Stream" and "Cashing" features
but gives a negative result for "C2 Error Info".
Teac DV-W50D
|
Memorex Dual X1
|
|
|
EAC's secure extract ripping mode results, which ensures maximum produced
WAV quality. Note that for each drive we used the build-in detection function:
|
Tested Drives |
Average DAE Speed (X) |
|
Pressed |
CDR |
Teac DV-W50D |
22.7 |
14.4 |
Memorex
Dual-X1
|
23
|
14.2
|
- Advanced DAE Quality
Teac DV-W50D
|
|
Memorex Dual-X1
|
|
The quality score of both drives on the advanced DAE quality test is the
absolute 100. The average speed of Memorex was 23.19X a bit higher than Teac's
at 22.95X.
- 99mins AudioCDs
|
Tested drives |
Ripping up to |
Teac DV-W50D
|
93 min |
Memorex Dual-X1
|
93 min |
- Reading/Ripping Protected AudioCDs
For the test procedure we used 2 protected AudioCDs, which we
tested in both recognition and ripping (with EAC) processes:
* Pressed AudioCD with Sony Key2Audio (Celine Dion - New Day
Has Come)
* Pressed AudioCD with Cactus Data Shield 200 (Natalie Imbruglia
- White Lilies Island)
|
|
Key2Audio |
CDS200 |
|
EAC |
Teac DV-W50D
|
OK |
OK |
Memorex Dual-X1
|
OK |
OK |
Both drives support reading/ripping of audio protected
discs independently of the protection mode.
11. CD Recording Tests
Teac DV-W50D
and Memorex
Dual-X1 - Page 11
CD Recording Tests
We
used the latest version Nero Burning Rom. Teac DV-W50D supports the 16x,
12x, 8x, and 4x Z-CLV writing speeds.
The following screenshot comes from Nero
CDSpeed writing simulation test with a blank 700MB CD-R disc. The drive starts
writing at 16x and keeps this
speed constant for the whole writing process, confirming the manufacturers
specifications.
The following picture comes from Nero and illustrates all
the available writing speeds for Teac.
Memorex
Dual-X1 supports the 16x, 12x, 8x, and 4x CLV writing speeds.We used the same
blank 700MB CD-R disc and we test the writing performance of the drive at maximum
speed. The reported average writing speed was over 16X, which is accordant with
the drive's specifications.
All the available writing speeds of Memorex are illustrated on the next screenshots
from Nero.
- Recording Tests
We created a 80min data compilation in Nero Burning Rom burned it to a 700MB
disc. Teac DV-W50D and Memorex Dual-X1 use CLV writing
method. The reported burn time is almost the same at 329sec for Teac and 326sec
for Memorex.
Below are Teac DV-W50D and Memorex Dual-X1 in all the
available writing speeds during the burning of a 80min data compilation with
Nero Burning Rom.
As we can see in the diagram above the difference between the
two drives is very little. Memorex was a little faster than Teac for about
3-5 sec in all speeds.
- Other features
Tested Drives
|
Teac DV-W50D
|
Memorex Dual-X1
|
|
Overburning
|
Up to 83 min
|
Up to 83 min
|
|
CD text reading/writing
|
Yes
|
Yes
|
Both drives supports the Overburning and the CD text reading/writing
features.
- HS-RW Writing Tests
We
used Nero Burning Rom for writing CDs in the maximum RW speed. Both drives
supports 24X rewriting speed.
According to the picture above Teac and Memorex once again having almost
the same times with Teac to be only 3 sec faster than Memorex.
12. DVD Recording Tests
Teac DV-W50D
and Memorex
Dual-X1 - Page 11
DVD Recording Tests
- Writing Performance
Teac and Memorex drives support both DVD-R/RW and DVD+R/RW media formats.
According to manufacturers specifications the two drives have the same recording
speeds.
On
the left we can see the DVD-R/RW recording speeds that both drive support.
In
this screenshot are the DVD+R/RW writing speeds for both drives
|
DVD Recording Tests (max speed)
|
|
|
DVD-R
|
DVD-RW
|
DVD+R
|
DVD+RW
|
Teac DV-W50D
|
14:20
|
28:25
|
14:21
|
23:48
|
Memorex Dual-X1
|
14:21
|
28:29
|
14:25
|
23:49
|
The following pictures come from Nero, after successful burnings with both
drives. The amount of data is the same for all the tests.
Teac DV-W50D and Memorex Dual X1 adjust the
recording speed according to this one that is supported by the inserted blank
DVD disc. In the following table you
can see
the maximum
permitted writing
speeds with various media, among with the writing times.
Disc Label
|
Disc Information
|
Writing Speed
|
Ritek 4x DVD-R
|
RITEKG04
|
4x
|
Pioneer 4x DVD-R
|
PVCR001002
|
4x
|
TDK 4x DVD-R
|
TTG01
|
4x
|
Memorex 4x DVD+R
|
RICOHJPN
|
4x
|
Sentinel 4x DVD+RW
|
SENTINELW01
|
2.4x
|
-DVD+RW Packet Writing Tests
Both drives support packet writing with DVD+RW and DVD-RW
media. To test the performance with the DVD+RW format, we formatted a 4x
DVD+RW disc by Ricoh and started the drag'n drop process, using an 412 MB
file (412.822 KB). With the background formatting in full progress, we wrote
down the reading / writing performance.
|
|
Average Writing
|
Average Reading
|
Teac DV-W50D
|
9:09 min / 0.55X
|
3:41min / 1.38X
|
Memorex Dual X1 |
9:14 min / 0.55X |
3:44 min / 1.36X |
As we can see from the table above both recorders performed almost the same
and gave back approximately the same results. This is logical because the
drives, as we mention before, are having the same main chipset.
13. 3T Jitter Tests - Teac DV-W50D
Teac DV-W50D
and Memorex
Dual-X1 -
Page 12
Writing Quality Tests
Teac DV-W50D
We used Professional 80min 48X CD-R media and burned the same AudioCD project
(with CD-Text) at 8X, 12X and 16X. Below you can
see the 3T
Pit & Land Jitter graphs.
- 3T Pit results
According to the diagram above we can see that the 3T Pit Jitter takes the
maximum value at the speed of 16X (28ns). The value is getting lower while
the speed reduces. No matter the speed was the Teac had very good results with
very low jitter
values far beyond the limit of 35ns.
The average 3T Pit Jitter values for all recording speeds are illustrated
in the following table.
The speed of 12X had the better value, while the other two were also good.
Excellent writing quality.
- 3T Land results
Teac had a very efficient 16X writing speed which archives the best performance
from the other at 8X and 12X. The 27ns is an excellent value.
The average 3T Land Jitter values for all recording speeds are illustrated
in the
following table.
At the 12X speed we had the lower average jitter value while
the highest was at the speed of 8X. Once again the results are very good.
- Summary
|
Recording Speed |
3T Pit Jitter (ns) |
3T Land Jitter (ns) |
> 35ns |
Max value (ns) |
|
|
24.37 |
26.95 |
No |
26 Pit, 29 Land |
|
12X |
24.12 |
25.59 |
No |
27 Pit, 29 Land |
16X |
26.00 |
26.27 |
No |
28 Pit, 27 Land |
The average 3T Pit and Land jitter values are below the 35nsec standard for
all the recording speeds. The numbers we took are good enough to characterize
Teac very good CD-R burner.
14. 3T Jitter Tests - Memorex Dual-X1
Teac DV-W50D
and Memorex
Dual-X1 -
Page 13
Writing Quality Tests
Memorex Dual-X1
We used Professional 80min 48X CD-R media and burned the same AudioCD project
(with CD-Text) at 8X, 12X and 16X. Below you can
see the 3T
Pit & Land Jitter graphs.
- 3T Pit results
As we can see from the graph above, the 3T Pit Jitter stays far below the
35ns RED book limit for all the available recording speeds. Memorex can burn
CD with great quality.
The average 3T Pit Jitter values for all recording speeds are illustrated
in the following table.
From the table above we confirming the quality performance of the drive.
- 3T Land results
The average 3T Land results are slightly increased in comparison with the
previous measurements of the 3T Pit Jitter. The maximum jitter value was
31ns, in the beginning of the CD, which is a very good number. After that the
values decreased again giving back more quality results.
The average 3T Land Jitter values for all recording speeds are illustrated
in the
following table.
Once again we can see in the table above how awful the drive
performed. Memorex is an excellent CD recorder.
- Summary
|
Recording Speed
|
3T Pit Jitter (ns)
|
3T Land Jitter (ns)
|
> 35ns
|
Max value (ns)
|
|
|
23.29
|
28.00
|
No
|
26 Pit, 31 Land
|
|
12X
|
23.02
|
26.10
|
No
|
24 Pit, 28 Land
|
16X
|
24.24
|
26.34
|
No
|
25 Pit, 27 Land
|
The average 3T Pit and Land jitter values are far beyond the 35nsec standard
for all the recording speeds. Memorex had better 3T Pit jitter values than Teac
while the 3T Land jitter values was almost the same for both drives.
15. PI/PO measurements - Teac DV-W50D
Teac DV-W50D and Memorex Dual-X1 - Page 14
KProbe PI/PO
measurements
Teac DV-W50D
In the following screenshots you can see the PI/PO scans for various 4X DVD-R/+R
and DVD-RW/+RW media, recorded with Teac DV-W50D at the maximum speed.
The software we used for the measurements is the KProbe, and the reader is
LiteOn XJ-HD-165H. The specific methodology is very depended on the drive we
use as a reader, and the reliability of the PI/PO provided output is also not
technically confirmed. As a result, we cannot safely come up with absolute
results, but we are allowed to compare the behavior of the drive with various
DVD recordable/rewritable media.
The recordable discs we used come from Pioneer, TDK,
Sentinel, Memorex and Ritek. More information about each disc type is available
in the
bottom of the page.
Media
|
Code
|
Memorex DVD+R
|
RICOHJPN
|
Pioneer 4X DVD-R
|
PVCR001002 |
Ritek 4X DVD-R
|
RITEKG04 |
TDK 4X DVD-R
|
TTG01 |
Pioneer DVD-RW
|
PVCW00V00245 |
Sentinel DVD+RW
|
SENTINELW01 |
The results revealed a good performance of Teac drive. The PI values are in
the acceptable area, below 280 errors / second. The PO values could
be better, considering that it should be zero.
16. PI/PO measurements - Memorex Dual-X1
Teac DV-W50D and Memorex Dual-X1 - Page 15
KProbe PI/PO
measurements
Memorex Dual-X1
In the following screenshots you can see the PI/PO scans for various 4X DVD-R/+R
and DVD-RW/+RW media, recorded with Memorex Dual-X1 at the maximum speed.
The software we used for the measurements is the KProbe, and the reader is
LiteOn XJ-HD-165H. The specific methodology is very depended on the drive we
use as a reader, and the reliability of the PI/PO provided output is also not
technically confirmed. As a result, we cannot safely come up with absolute
results, but we are allowed to compare the behavior of the drive with various
DVD recordable/rewritable media.
The recordable discs we used come from Pioneer, TDK,
Memorex and Ritek. More information about each disc type is available in the
bottom of the page.
Media
|
Code
|
Ritek 4X DVD-R
|
RITEKG04 |
TDK 4X DVD-R
|
TTG01 |
Pioneer DVD-RW
|
PVCW00V00245 |
Sentinel DVD+RW
|
SENTINELW01
|
The performance of Memorex is familiar with Teac's. Again PI measurements
were good but the PO values were increased.
17. Conclusion
Teac DV-W50D
and Memorex
Dual-X1 - Page 16
Conclusion
|
Pros
|
Cons
|
- Dual format burners
- 4x DVD±R
writing
- Complete retail packages
- Excellent CD recording quality
- Very good DVD error correction
- Fast CD-R/RW/DVD-ROM/DVD±R/RW
reading
- Very good sound reproduction of defected AudioCD's
- High CD/DVD error correction
- Supports Key2Audio and CDS200 audio protections
- Reasonably
priced
|
- Cannot create working backups with latest versions
of SafeDisk protection
- Does not support Mount Rainer
- Increased DVD Seek times
- 2x DVD-Video ripping
- Low C2
accuracy
|
Teac DV-W50D and Memorex Dual X-1 are having almost the same performance,
as they are "wearing" the same series of chipset. Of course that
doesn't mean that the drives are the same. Generally the majority of the common
users will not face up any problems in their daily tasks, although we found
out some minor issues that their companies could improve through firmware upgrades.
The retail packages are almost complete, containing software for CD/DVD authoring
and playback, as well as some useful utilities. However there are not enough
included blank media. Teac has only a blank DVD-R and a CD-R media and Memorex
a DVD+R 4X and a DVD+RW 2X blank media.
In the reading part, the drives support the 12X reading speed for DVD-ROM
and 6X for DVD+R/+RW/-R/-RW formats. The drives were slightly faster in the
corresponding tests, as it commonly happens with the latest drives.
Both drives have excellent CD writing quality with very low jitter values.
However the C2 accuracy could be better. They can also playback and rip easily
Key2Audio and CDS200 audio protections discs.
Teac and Memorex drives supports 4x burning speed on all the DVD-R and DVD+R
media we tested, providing writing times less than 15 min for 4.38GB. The DVD
error correction of both drives is very good; they managed to playback correctly
all the defected DVD test discs without reporting any read problems. The DVD
writing quality was acceptable with low PI values, while the PO error rate
could be lower with some media.
The seek times for the CD and DVD formats were increased, in all tests the
performance was below average. A firmware upgrade will probably solve the problem.
The ability to create working backups of the latest SafeDisc v.2 protected
titles is limited for both Teac and Memorex drives. Software submission is
required in order to produce working backups of SafeDisc v2.50 or higher.
Teac DV-W50D and Memorex Dual X-1 are two competitive drives with almost the
same retail price at approximately $135~160. With decent performance and reasonable
price, both deserve a position in your PC sleeves. However both companies have
recently announced their new models at 8x DVD recording speed. The DVD recording
market is currently very aggressive so the prices are expected to decrease
as the competition rises.