From Adat Through The Quadraverb 2 Back To Adat - Alesis 2 Reference Manual

Alesis Optical Interface - Chapter 7

From ADAT through the QuadraVerb 2 back to ADAT

When routing ADAT tracks to the QuadraVerb 2 to be recorded back to ADAT, how
you go about it depends on whether or not you are using a BRC. If you have one or
more ADATs with no BRC, then you simply connect the digital buss of the ADATs and
QuadraVerb 2 in a loop (described earlier in this chapter).
With the BRC, you can select up to eight tracks of one ADAT to be output on the
digital buss (which connects to all ADATs and the QuadraVerb 2 as described earlier)
for track bouncing. In this situation, the BRC determines (by choosing your digital
source tracks) which ADAT in the chain is transmitting. Only one ADAT can transmit
on the digital buss at any single moment. All other ADATs are put into a "digital thru"
mode, whereby they can receive all eight channels (even record them) and pass them
along to their digital outputs without adding anything.
Although the BRC does not determine which tracks are going to the QuadraVerb 2, it
does determine which ADAT is transmitting. Therefore, even if you do not intend to
route the same tracks to the digital buss for bouncing (it is unlikely that you would
want to do this at the same time, anyway), you must use the BRC to choose at least
one of the tracks on the ADAT you wish to process audio in the QuadraVerb 2. The
QuadraVerb 2 then intercepts any two of the 8 channels coming from the transmitting
ADAT, and then processes them and routes them to the same or different channel
numbers, to be recorded back onto another ADAT in the beginning of the loop.
This means that if you connect QuadraVerb 2 to the digital buss between the last and
first ADAT in a multi-unit/BRC system, you can process any two channels; BUT you
can record the QuadraVerb 2's output only to the same ADAT that is transmitting or
any ADAT that comes before it in the chain. This is because the transmitting ADAT
does not route the digital audio it receives "thru" to its output.
Example: Let's say you have four ADATs and a BRC. If you were to select tracks 9 and
10 (tracks 1 and 2 on ADAT #2) as your source tracks for digital bouncing on the BRC,
you thereby designate ADAT #2 as the transmitter on the digital buss. QuadraVerb 2
can now intercept any of that ADAT's 8 channels, process them, and output them
back onto two channels, which connects back to the first ADAT in the chain. The
QuadraVerb 2's output could therefore be recorded onto ADAT #1 and #2, but not
ADAT #3. This is because ADAT #2 is not routing its digital input thru to its output,
because it is routing its tape signal instead. If you wanted to record the QuadraVerb
2's digital output onto ADAT #3, the easiest solution is to swap tapes between ADAT
#1 and #3.
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