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#1
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Calrec Audio mixers M series: PQ1253-8 mic/line + eq module: mysterious Euroconn pins
Am modifying a 19" nest unit containing 10 of these excellent modules
plugged into their motherboard (backplane), and running off +/-16.5V dc with a Centre rail for Active component supplies and +5V dc for Logic devices/LEDs. Each channel module has two 32-pin Euroconns, most of whose functions I understand, but I am at a loss regarding the following: Upper Euroconn, dedicated to card B - pins 23 and 22 (Line level i/p). How can this optional i/p pair be harnessed by external switching? pins 3 and 2. (Mic Hi/Lo select) Are pins 3 and 2 to be strapped? We need max available i/p gain for dynamic mic use. pin 1 (Line select). Should this be permanently tied to pin 8 of card A? Lower Euroconn, dedicated to card A - pin 8 (Logic). Are the channels all bussed together at this pole, and then connected externally to some switch? If so, how? Hope someone can help out. Thanks Jim |
#2
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Hi Jim,
i owned a PQ1253 and i am looking for the pinouts. You seem to know this. I don't have it yet, maybe it is written inside on the pcb but i am preparing myself to not have it written... I think it will be a great unit, i am keen of having it. I need to do the PSU, and mount it in a rack or something like this. I really need those pinouts, hope you know Bests Guillaume |
#3
Posted to rec.audio.pro
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Calrec Audio mixers M series: PQ1253-8 mic/line + eq module: mysterious Euroconn pins
You guys might want to try pinging Conrad Slater over on the RAMPS
board--he's had a Calrec console that he's used for many years and he knows it and the Calrec folks very well. Philip Perkins |
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