Originally Posted by cel4145
Great news that Havok305 and domingos1965 got their subs configured. Congrats, guys!
Now, if anonymouse99 can just get his setup. I know he's been waiting, and waiting, and waiting . . .
Last night, I finally got some time to do some crude configuration. We lost our close/beloved aunt earlier this week and everything else took a back seat in life.
Anyway .... I had left the sub upside down in the inner box and was finally able to hookup the spikes and put the sub on this very useful furniture dolly
. Very easy to move and re-position this way. There is 13 x 42 (4000cf) space, HT is 13 x 18. Non-HT space also opens up into 2000cf of open passage and kitchen area. Primary seating at 15-17' from sub.
I have not been able to connect my in-wall coax - had to improvize/contrive a 25' mini-plug cable with rca adapters temporarily for the sub.This is also causing a very annoying and noticeable hum, which should hopefully go away once setup properly. Due to placement limitations, sub goes into right corner of HT area - not ideal so unable to realistically do a sub crawl.
Basic equipment is a PS3, and 7.1 4311ci. I have 5 preference audio in-wall shielded rectangular speakers
- they surprisingly put out decent bass. Rear surrounds are angled Preference Audio in-ceiling round
I have an additional pair of speakers on the opposite wall close to the kitchen designated as zone2. I intend to run B&O front wides
after a little more in-wall cabling, The 4311ci supports 11.2, I'll end up with 9.1.
For now my 7.1 setup configured with Audyssey XT EQ32 using 6 data points - sub's gain set at 9 o'clock (is that a 3?). With this config Denon measured my sub to be at 72db, I had to bump the gain to about 10 o'clock (possibly a tad over 4).
With a gain of approx 4, Audyssey set a -3.5db AVR trim. Fronts and center crossovers set at 40Hz, surrounds/rears at 60 Hz. I bumped crossover to 80Hz for all speakers, but the system sounded more wholesome, with better HT experience at lower crossover values.
After all configured and said, I did not hear significant bass at 4 and -3.5db trim. I gradually started to up this to -1db and 0db, and lo and behold - sub started to come to life.
The sub is quite incredible and astonishing especially with bass-heavy movies. I distinctly hear extended frequencies below what my current x-oynx av123 sub can put out - it is also dwarfed by the bigger EX monster.
I am in the process of building my collection but managed to try out our kid's blu-ray collection - Cars
, Toy Story 3
, Incredibles (6.1)
, Iron Man. Briefly tried these broadcast OTA satellite (DD 5.1) movies - Burlesque
(very bass heavy beats, songs!), Ice Age
, Iron Man 2
. Toy Story 3
(7.1) puts out some very distinct bass extension and some in Cars
. Planning to get How to Train your Dragon
, Captain America
and a few more, hopefully some good deals during black Friday.
All said and done, I'm trying to determine a sweet spot for gain and trim, i.e. should i lower gain and feed it with a higher db line signal or up the gain to 11 or 12 with lower db. I need to play around with crossover settings to see if the sub will fill low frequency presence that you often hear in some movies, for example space ship hum/noise in Star Trek, or background soundtrack music in movies.
I am trying to avoid getting dual subs, goal is to employ just one in corner designated space. I get this feeling that I may need a bigger sub, possibly due room volume and placement constraints.
I do not feel that I am consistently hearing sufficient LFE spectrum with intensity - it sounds louder during more active scenes but not all the time. Maybe I should get an SPL to ensure there is no dead zone seating. Maybe I'll do a quick sub crawl (which really won't help here though). I need to ask my son to flip the phase switch as well - maybe that might help. I mainly need to determine how hot I can run the sub without really overextending, stressing it. Maybe I can run it louder.
Still tweaking and playing though ... but need to quickly determine if I should keep it or swap it out in favor if a 15" VTF-15H (18" wide enclosure should fit my 21" space!) - hopefully no WAF issues with this one. I wonder if front firing VTF-15H with sufficient power will help or is necessary?
While I don't intend to shake/rattle the house, it may be more an issue of bass filling the space that I need to address. Still tweaking .... thanks to everyone on this forum, very knowledgeable folks, willing to help .... answers seem only a keyboard away - gratefully appreciate it! More later.