I have an XMC-2 on the way to me, along with a BasX A-700. The XPA-5 Gen1 I currently own will be driving my 5 bed channels, and the A-700 will be driving my 4 Atmos channels. The long term plan is to add an additional subwoofer, two rear surrounds, and two more Atmos channels, bringing me to 7.2.6. But for now it will be 5.1.4.
I'm sure I'll have more questions later once I get up and running, but my current concern is exactly how to wire everything up given Emotiva's oddities regarding phase/speaker polarity with their XLR jacks.
This thread on the Emotiva boards discusses this (
Phase, Pin Outs, Sources, Amps, Speakers —What’s important? | The Emotiva Lounge) but I'm not sure what the definitive answers are when using not just Emotiva amps, but an Emotiva processor as well. For further reference, here is official literature from Emotiva describing what pins do what in their XLR jacks:
Emotiva_Product-Info_Balanced_XLR_Pinouts.pdf
So to go over a few things:
1. I'll be hooking up the bed channel XLR pre-outs on the XMC-2 to the XLR inputs on my XPA-5 Gen1, using XLR cables from Monoprice.
2. I'll be hooking up the Atmos channel XLR pre-outs on the XMC-2 to the RCA inputs on the BasX A-700. This will require the use of XLR-RCA adaptors. This could be done using Emotiva's adaptors (
Balanced XLR to Unbalanced RCA Adapter Interconnect), which still require the use of additional RCA interconnects. Emotiva says this about these adaptors:
"When connecting a balanced output to an unbalanced input on modern audio gear, the proper way to do so is to connect the non-inverted output on the balanced output to the unbalanced input, and leave the inverted output unconnected. Many adapter cables, designed primarily for use with microphones, short the unused output pin to ground. While most equipment, including ours, will tolerate this without damage, it is not recommended, and may unnecessarily stress the output circuitry on your processor or preamp. This adapter was specifically designed to work optimally on modern balanced audio gear - and leaves the unused output line unconnected."
Alternatively, I could purchase these (
https://www.amazon.com/Monoprice-XLR-Male-RCA-Cable/dp/B005KBM160/ref=sr_1_6?dchild=1&keywords=rca+to+xlr&qid=1610583912&sr=8-6&th=1) and then not have to use additional RCA interconnects as they're an all-in-one solution. However, I'm concerned about that paragraph from Emotiva that I quoted above. Which would be the best way to go here?
3. My HSU subwoofer does not have an XLR input, so it will also require the use of an XLR-RCA adaptor. I'm assuming that Emotiva's XLR-RCA adaptor is the way to go, since it terminates with a female RCA plug, perfect for connecting my existing RCA-RCA subwoofer cable.
NOW, that bring me to the question of how to wire speakers and adjust the subwoofer depending on how I do everything mentioned above. Which speakers should be wired reverse phase? What should be done with the subwoofer phase adjustment? I do understand that any switching of hot/cold speaker wires should be done at the amp, and NOT at the speaker as well, otherwise you're right back to square one. I also understand that Dirac does correct for phase to some degree, but I'd rather get the wiring correct to achieve absolute phase BEFORE running Dirac.
Thanks in advance!