Originally Posted by mrb55
I am currently in the process of calibrating my home theater setup using a Denon AVR-4311ci receiver and Audyssey MultEQ XT32. I am using the following Definitive Technology speakers with the calibration:
Left and Right Front - Mythos ST (each which includes 300 watt powered subwoofer)
Center - Mythos 10 (no subwoofer)
I'm using monoprice 12 guage speaker wire between the receiver and all speakers (about 10 feet in length for each). I also have the 10 foot LFE cables from Sub 1 and Sub 2 outs on the Denon to each of the SuperTowers.
Prior to performing the calibration, I selected LFE (not LFE+Main) for the subwoofer output per recommendations I have read here and elsewhere.
After completing the calibration setup (during which both subwoofers were tuned manually to 75db) I found that the Denon 4311 had configured the left and right SuperTowers to Large and the Mythos 10 to Small.
The crossovers for the SuperTowers was set to (Full Band) which was actually dialed in at 40hz. However the Mythos 10 Center had it's crossover set to 80hz.
Channel level reductions for all speakers and two subwoofers were all below -8db (so I'm not maxing out the receiver which has a channel trim limit of +/- 12db)
I have repeated this process a couple of times and always get the same results so I'm pretty sure that I have consistent/good numbers from the Audyssey calibration.
Now for my questions/comments:
The Denon Manual states that if LFE is chosen (and not LFE+Main) as the subwoofer setting, then speakers set to Large "will not pass" their frequencies below the crossover to the subwoofer. They will instead use the full dynamic range of the given speaker.
The Definitive Technology user manual says that if the LFE connection on the SuperTower is used, then the speakers should be set to Large and Subwoofer "Yes". It says that it will pass the required .1 frequencies from the content through the speaker wire directly to the subwoofer (and not use the LFE)
As the Mythos 10 Center Channel has no subwoofer, I would expect that it would be set to Small (which it is).
1. Therefore, would the only reason in using the LFE inputs on the SuperTowers be to pass the "center channel's" lower frequencies to the subwoofer (as the SuperTowers "Left/Right Front" themselves would not actually use the LFE due to Denon Front Left and Right "Large" speaker configuration)?
2. If the SuperTower LFE's are used (for the center channel speaker), does the Denon 4311 still actually send the entire frequency range to the SuperTowers Front Left and Right that then pass on the lower frequencies to the subwoofer as Definitive Technology claims?
3. I have read other areas regarding Audyssey setup that if "any subwoofer" is used, all speakers in the configuration should be set to Small. Does this help to improve the soundstage by forcing all of the speakers including the SuperTowers to use the LFE input for the lower frequencies?
4. If I set all my speakers to Small, I see that the previously Audyssey calibrated crossover settings for the Mythos 10 center channel (80hz) is different than the Supertowers (40hz). (Again, Audyssey had set the Front Left and Right to Large during calibration).
5. What I don't understand is that if these speakers are matched (same speaker dimensions), shouldn't the crossover be the same?
6. If I was to set all speakers to Small would it be better to set all of the crossovers to match (at 80hz) as all three speakers would then be using the LFE inputs for the lower frequencies?
7. Would I lose any dynamic range of the Mythos ST by changing the Denon setting from Large to Small.
8. What (if any) are the optimal settings for Audyssey with my components? I am looking for an optimal reference level for movies (with music being a close second). Does anyone else have this same setup?