Originally Posted by mlgreen
What sonic differences would it be with the port plugged on the center channel as opposed to running it in its normal ported setup?
I believe mine are 1st gen Arx speakers. Initially I was running everything large on my A5 towers & A1 C/surrounds. Almost 3 years later I began playing w/ the settings on my AVR and when it was all said and done we found that we like this the best:
A5 Towers: ~ 12-16" away from the wall slight toe in; AVR full/large setting. The toe in seems to enlarge the sound stage for us in our 40L/20w room. Also we sit 12 feet away from the center.
A1 center: Unfortunately we have it up against the wall. If we change our stands/shelving then the distance might change but it is what it is. AVR crossed at 110hz and the port plugged. On 3 movies we noticed running the center at full created muddy sound, ie the nuclear explosions in T2 and T5. And during TLOTR rise of the king/installment 3 when Frodo, Sam and Goluim were in the marsh and the undead king was on his dragon thing and when the wings flapped the sound again was muddy/strained. Running the C at between 100-110hz made T2 and T5 sound perfect. I can have my AVR cranked. I don't know what the SPL is but numerically the dial goes up to 80. I can have it at 65 and the upstairs shakes and rumbles well, things sound great. Pre-crossed the center bottomed out but now it's perfect. On TLOTR, every scene is perfect at that setup minus that one marsh/swamp scene. Plugging the center made things smooth out and is about as good as it gets. FWIW, I rewired and used one of the A5's as a center set as full/large, unplugged and it had no issue. If I had the room and money, w/o experiencing the new A2, I'd use A5's as all 5ch's. From my reading the newer A2 and I'd guess subsequent designs, the A2 will surpass previous center duties and will have very dynamic and clear vocals. Crossed properly I'm guessing it will be about as perfect as one could hope for. I wait patiently to see what the mid year brings.
A1 surrounds: I have these on wall mounts about 8-12" beyond MLP angled at the listener. The house was pre-wired and the walls are done so I'm limited to set up locations. They are run full/large and unported. When I run blu-ray in direct mode, my avr displays L/C/R, surrounds +LFE and the rears provide great sound. For blu-ray we like Direct and Neo6 depending on the movie.
We have no room treatments. The room serves double duty, exercise and HT. 25' of exercise space, treadmill, dumbbells, squat rack etc.. w/ rubber flooring and 15' is the HT area, 2 couches on carpet. This is in the basement on concrete subfloor and finished walls/ceilings.
This was more than you inquired but hopefully it will help. In the end, we plugged the center.