Digital Connections - Chapter 7

From a QuadraSynth or QS-series synth through the Q20 back to ADAT

The QuadraSynth/QS7/QS8/etc. provide their four audio outputs (Main Left/Right and Aux Left/Right) on the first four channels of the Alesis Optical digital buss. If you connect the QuadraSynth/QSÕs digital output to the digital input of the Q20, you would select channels 1 and 2 if you wanted to process the two Main outputs, or channels 3 and 4 if you wanted to process the Aux channels.

If you are using the QuadraSynth/QS along with an ADAT system and the BRC or an AI-2, you will need to supply the QS with a 48 kHz Clock source from the BRC or AI-2 (see earlier in the chapter for more information about the 48 kHz Clock). The Q20 does not need to receive a 48 kHz Clock from the BRC or AI-2, since it will be synchronizing to the QSÕs clock coming in on its digital inputs, which in turn will be synchronized to the 48 kHz clock coming from the BRC or AI-2. This is extremely important to make sure that all the digital devices are synchronized to the same sample clock.

Note that this chapter covers only a few of the possible digital connections to the Q20. There are dozens of products in the ADAT Group, with more added every day, which take advantage of the flexable ADAT Optical digital signal. With the addition of the S/PDIF connectors, itÕs tough to find any product with digital connectors which isnÕt compatible with the Q20. Use these explanations as examples when designing your own digital studio.

Q20 Reference Manual

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