IainStinson wrote:Ed, you mentioned " rear panel routing (dip) switches" which I've not found mentioned in the manual. Are they physical switches or are they "virtual" switches in the control GUU? Can you say more about them please...
What connections would you recommend using for unbalanced output?
My bad, sorry. While trying to post a comment here, I was also on the phone with a tech who was trying to trouble shoot a system using a 24Ao connected to a Crown CT8150. You are correct. The routing switches I wrongly mentioned are on the Crown amp, not the MOTU 24 Ao.
As far as the unbalanced connections to the 24Ao, on the back panel, the Phoenix connectors are below the DB 25 connectors and arranged in groups. 4 groups under each DB 25. Starting at the right most group is the output for channel 1, then to the left channel 2, channel 3, channel 4. (right to left). The next group to the left is for channels 5,6,7,8, etc. Thru channel 24 on the left most group.
Connecting designations for the Phoenix connectors are shown for channel 1, channel 5 etc. So for instance above the channel 1 Phoenix connector it shows
G + - (Left to right) For unbalanced output, you connect
G to
- for the ground (common) while
+ is the signal output (center pin of an RCA connector).
While you are not planning to use the DB 25 connectors, for reference they follow the Panasonic/Tascam (AES-59) standard specification for a female D-sub connector with balanced analog output. I always need to follow a printed reference to make these connections. Never bothered to memorize them.
If you use individual 3 position Phoenix connectors, you might need to very slightly file/sand a bit off the outside edges to make them fit easier. Depends on which manufacturer. Some fit snug, but ok, others a bit too tight.
Hope that helps and next time I'll try not to do 2 things at the same time as in multi tasking.
Rgds,
Ed