Multiple SSL Audio Cards and ASIO-2
T
he ASIO-2 driver specification allows for only one audio card to be used at any single time. However, the current
i
mplementation of the SSL Soundscape Device Driver allows multiple SSL audio cards to be used simultaneously under
A
SIO-2 by presenting them to the application as a single device. In order to use multiple cards simultaneously, All Devices
m
ust be selected in the SSL Soundscape ASIO Panel. To open the SSL Soundscape ASIO Panel in Nuendo 4, click Device
S
etup under the Devices menu, select SSL Soundscape ASIO under VST Audio System and click the Control Panel button.
I
n the example below, a MadiXtreme 128 is used with an SSL Mixpander, for a total of 192 input streams and 192 output
s
treams.
Although the Soundscape drivers allow multiple cards to be used simultaneously, the total number of input or output
streams is currently limited to 254 – if the total number of either stream exceeds 254 the audio application will not be
able to see or use any of the streams. For instance:
• Three MadiXtreme 64s could be used simultaneously (providing 192 input streams and 192 output streams)
• One MadiXtreme 128 and one MadiXtreme 64 could be used together (providing 192 input and output streams)
• Any combination of MadiXtremes and Mixpanders could be used, provided that the combination does not exceed 254
channels and streams.
• Two MadiXtreme 128s
cannot
be used simultaneously under ASIO-2, neither can one MadiXtreme 128 and two
Mixpanders as both of these configurations would present too many input and output channels and streams.
Selecting a combination of cards that exceeds 254 input streams or 254 output streams will cause the sequencer
to fail to detect any streams.
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