Firmware: V1.02, Windows driver: 1.02, Mac driver: 1.03, Cubase LE 4: 4.0.3
3
TASCAM US-1641
Release Notes
For Windows
ª
Version 1.02
When a 96 KHz project is closed once, and then a 96
•
KHz project is opened, the internal sampling setting
is set to 44.1 KHz and the sound signal is muted. If
this should happen, press the Reset button in Cubase’s
Device Menu/Device Setup/VST Audio System. This
corrects the setting and allows sound to be heard.
When using Sonar 6.2 ASIO mode, the sampling
•
frequency display in the US-1641 control panel does not
change even if the sampling setting is changed in Sonar.
Internally, however, the setting has taken effect.
When using Sonar 6.2 ASIO mode, the 1641 is not
•
recognized if a US-144/122L driver is installed. When
using Sonar, please avoid installing drivers for both the
US-1641 and the US-122L/144 on the same computer.
Version 1.00
PCs with nVIDIA USB controller chips may not offer
•
optimum performance for audio streaming over USB 2.0,
resulting in audio artifacts. A higher latency setting or
the addition of a non-nVIDIA USB 2.0 card is required.
To find out what controller chip your PC uses:
Go to
11
START
>
Control Panel
>
System
Click on the
21
Hardware
tab, then the
Device
Manager
button1
Click the “
31
+
” (plus) sign next to Universal Serial
Bus Controllers
You will see the chip manufacturer of all
41
installed USB controllers
If a WDM audio app (iTunes / Windows Media Player)
•
is running and a US-1641 unit changes its sample rate,
the audio will play at the wrong pitch. The workaround
is to quit the WDM audio app and launch it again. The
app should now play audio at the correct pitch.
In order to use a US-1641 reliably with Windows
•
Media Player, select the US-1641 as the Sound play-
back Default Device in the Audio tab of the Sounds and
Audio Devices control panel. Do not configure the audio
interface from within Windows Media Player.
The US-1641 Windows drivers do not currently support
•
64-bit Windows.
In some rare cases, we have found that built-in mother-
•
board audio devices can interfere with SONAR when it
in ASIO mode, causing SONAR to report an error each
time it is launched. To work around this, disable the
built-in motherboard audio using your computer’s BIOS
setup screen.
For Mac OS X
ª
Version 1.00
When switching from 44.1/48 kHz to 88.2/96 kHz, you
•
may find you need to increase the audio buffer size to
eliminate audio artifacts. Not all audio applications
permit the user to adjust the buffer size, but most Digital
Audio Workstations offer this feature.
Some Macs may refuse to use the US-1641 for system
•
sounds.
GarageBand may not work properly at sample rates
•
other than 44.1 kHz.
The buffer size slider of a Native Instruments soft
•
synth (B4, Pro-53, etc) does not operate properly when
running as a standalone synth (not hosed in a DAW).
Known Issues
