Originally Posted by wingnut4772
I see. So even at Sub 1 if I have the subs hooked up to both 1 and 2 Sub 2 will get used?
Your Subwoofer connections are OK
Next step would be setting the volume levels of your speakers and then checking the phases of your subwoofers
From Bob Pariseau - How to set Set your volume levels for all your speakers
Prior to running the ARC measurements, there is another step to do to get the test tone volumes correct:
Using your trusty Radio Shack SPL meter (on Slow Response and C weighting), go into Setup / Speaker Calibration and set the volume trim for the Front Left speaker and for the subwoofer both to 0dB. Then turn on Manual in the first line and scroll down to the Noise Level line. Adjust Noise Level until your Front Left speaker is producing roughly 75dB as measured at your dead center listening position (ARC mic position #1 -- SPL meter pointing straight up). Leave the volume trim setting for the Front Left speaker at 0dB, just adjust the Noise Level line.
Remember -Set the Left Front line to 0dB and THEN adjust the Noise Level line.
Now scroll to the subwoofer line. Leave that line at 0dB but adjust the internal volume knob on your subwoofer until it, too measures roughly 75dB at the same listening position. There is no need to be super precise in these adjustment -- a ball park setting is sufficient.
ARC will use the Noise Level setting you have just made to set the volume for its own test sweep tones, and the adjustment you have just made to your subwoofer's volume knob insures that it, too, can be level adjusted properly to match. If you happen to have any other speakers with internally powered amps (i.e., with a volume control on them) do the same for them.
Then follow these instructions from Bob Pariseau for your subs
1) Go to Setup > Speaker Configuration and specify that you have only 1 sub. This is the necessary setting for use with ARC regardless of how many subs you have. Always specify "1 Sub" if you intend to use ARC.
2) Next set the sub volumes separately.
Turn one sub off (at the sub itself -- unplug it if necessary). Go to Setup > Level Calibration. Zero out every line in there. Then set Noise Level to produce 75dB SPL (the LF speaker will be the one playing). Then scroll to either sub line and, leaving that line at 0dB, adjust the volume knob in the still powered sub to produce 73dB SPL (not 75dB). Turn off that sub and turn on the other sub (again, at the subs). Adjust it's volume knob to also produce 73dB. You are done. In combo they'll produce roughly 75dB and they are balance with respect to each other. "Roughly" is close enough.
3) Next set the phase for each sub separately.
With only one sub powered at a time, adjust the Polarity/Phase for that sub to best match the LF speaker. Use the phase/polarity controls on the sub itself. You'll need the phase adjustment tones on a calibration DVD -- details are in those post links in the first post of this thread. When both subs are in phase with LF then they are also in phase with each other.
Dmusoke provided this for setting subwoofer phasing: http://www.avsforum.com/t/678260/anthem-d2-d2v-avm50-avm50v-arc1-tweaking-guide/31380#post_19542630
for setting the Subwoofer phasing
4) Now do ARC Measurement (with BOTH subs powered on). ARC will hear the two subs as a combo and will correct accordingly. This is the only proper way to use ARC with more than one sub.
5) After you do your ARC Upload you should find that 1 Sub is still specified. The speaker volume trim and crossover uploaded for the sub will be the correct values for your combo of two subs.