StudioLive RM32Ai and RM16Ai Mixers & UC Surface with QMix Ai
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Hello knowledgable Presonus users!!

I wanted to ask about the rear mix out on the RMai mixers. I am adding a second in ear transmitter to my rack so now I will be forced to make connections in the rear of the rack. I would like to use the D'sub option so I am going to have a custom short XLR to 25 D'sub snake made. My question is:

Can I have a 4 channel snake made, instead of 8, (which will mean that several of the solder cups will remain empty inside the D'sub connector) so that I can still use 4 of my aux outs on the front of the RMai for aux fed subs (occasionally do this)??

The reason I ask is because a 4 channel XLR to D'sub is about $38 ( I only need 4...2 stereo mixes), and an 8 channel is about $75.

Would I cause a problem if all 8 channels weren't wired into the snake...even though the rear of the mixer specifically says "Mix Outputs 1-8...I didn't know if this would cause some kind of wiring issue.

A second question, if I am forced to use an 8-channel snake, can I use the front aux outs even when I have a D'sub cable plugged in? I would make sure to use channel 5-8 for anything I would run from the front as to not feed two separate signals.


Thanks for the help!
-Dylan
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by matthewgorman on Fri Nov 10, 2017 8:44 am
Not sure of the wiring question. My instinct tells me it wouldn't be a big deal as long as the outs you want to use are wired correctly.

On the second question, you can use a combo of Dsub and front output connections. The dsub is just a mirror of the front outputs, and nothing is deactivated on the front when dsub is connected. Same as the Main outs being mirrored on the SPDIF.

Matt

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by Dcaugust on Fri Nov 10, 2017 9:11 am
Thanks for the reply! Thats good to know that I can use the Dsub and still have access to the front connections. Hopefully someone might reply back with an answer to wiring a Dsub snake with only 4 XLR instead of 8. Thanks again, Matt!
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by matthewgorman on Fri Nov 10, 2017 9:46 am
No doubt. There are folks much smarter than I lurking these halls.

Matt

Lenovo ThinkServer TS140 Win 10 64bit, 8GB RAM, Intel Xeon
Lenovo Thinkpad E520, Windows 7 64bit, 8 GB RAM, Intel i5 Processor

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by Scimitar on Fri Nov 10, 2017 12:18 pm
Absolutely no problem to only use 4 of the eight outputs on the Dsub. I have the RM32 and recently made up a daub loom to enable easy connection to IEM's. If you are going to get someone to make one up for you, then simply leave the aux-out channels that will not be connected through the 25 pin DSub with no connection un-soldered. There is a connection diagram / pin-out in the manual.

StudioOne Pro
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RM32Ai, RM16Ai, CS18Ai,
328Ai, 315Ai, 18sAi,
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by Dcaugust on Mon Nov 13, 2017 6:32 am
Thanks so much!

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