Originally Posted by Yosh70
Quick question for you guys....I recently replaced the driver in my PB13 Ultra and have been running it for the last couple of weeks to break it in. I will re-run ARC again as I have dropped the center channel a couple of inches as well but one thing me and my boy have noticed is the LF's are very dependent on where you sit on the couch. Middle position is good, left seems a bit better and the right side (basically facing the sub) seems pretty non-existent.
It seems to be a result of ARC and the replacement of the driver so I'm hoping a re-run will cure this phenomenon. Should I be looking at anything else as well?
That's just a fact of life with one sub in most rooms. EQ can fix response at one spot, but at the cost of making it worse elsewhere.
The only answer is to use multiple subs to smooth out room modes. Three subs seems to be the point just before diminishing returns in most rooms, though with lots of placement flexibility some get really lucky with two.
Fortunately, the other subs needn't be beasts like the SVS Ultra. You can get by with much
smaller/less powerful subs.
Originally Posted by skvinson
Great. Using ARC to measure will be a big help. I didn't want to have to buy a mic and potentially sound card, etc. ...
The ARC mic will work just fine with FuzzMeasure Pro on Macs, and I assume not-a-Mac programs like HOLMimpulse too. Just plug it into the USB port. You can also get it calibrated by a NIST-certified lab, so that you have a correction file for it that works outside of the closed ARC system. But that's debatably necessary in the frequency region of interest.
Originally Posted by jsil
I forgot to ask how will does ARC do with 2 subs.
No autocorrection system handles multiple subs particularly well. But if you set up the subs manually (and I don't just mean matching their level and phase, but taking actual measurements and blending them sequentially with the mains for smoothest response) then you can run ARC and redo your sub EQ to correct the errors that ARC introduced.
ARC, like Audyssey and the other systems, is inherently flawed because it assumes the interaction of subs and mains in the crossover region is predictable. Problem is, it's not. That's why these systems always result in audibly poorer integration than a good manual calibration, where one runs sweeps through the mains and folds in each sub sequentially, adjusting the lowpass/level/phase of each sub until you have the smoothest possible response in that room.
So my advice is do that, then run ARC, then remeasure, and then fix whatever ARC (if anything) botched by playing with level/delay/highpass and any parametric EQ you have available. Yes, there are going to be those who will whine that doing something after ARC will ruin what ARC did. They are, simply speaking, wrong. It's just an EQ (overall a very good one, with this one notable flaw shared by all such systems), and if it does something wrong then the higher-fidelity approach is to fix it, not live with it and get used to it.
Originally Posted by Steve Dodds
Just as I was about to do a full reset prior to dragging it back to the dealer, I checked the settings one last time.***
It strikes me that all modern AVRs - not just Anthem's, and not Anthems more than anyone else's - need a "help" button with an in-unit troubleshooting menu. Something along the lines of what Harmony remotes do, or the network assistant in OSX.
These things are complicated.