Release Notes

Known Issues

ªª For Windows

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:

111 Go to START > Control Panel > System

222Click on the Hardware tab, then the Device Manager button.

333 Click the “+” (plus) sign next to Universal Serial

Bus Controllers

444 You will see the chip manufacturer of all 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 playback 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.

ªª For Mac OS X

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).

TASCAM US-1641

Firmware: V1.02, Windows driver: 1.02, Mac driver: 1.03, Cubase LE 4: 4.0.3 3