235 Build - Page 8

Do you mean stuff the riser full or the cavity below the OC 703?

I'm planning on my PJ purchase and possible placement. I would like it up in the rear soffit to keep it out of the way (ceilings only 7' 6" before riser). With offset lens on the Panny AE8000 I will need to keep the PJ slightly off center in the room. My only concern at this point is venting. This PJ has 2 intakes, one on the right (when facing the PJ) and one in the back. It exhausts in the front. The pics show my preferred positioning, will I have a problem with ventilation? Do I need to tap into my cold air returns that are nearby? The manuals recommend 4" gap on sides and rear however the left side has no vents so can't see why I would have to leave 4" on that side.


Ceiling cut away:



Ceiling back on:

Glad to have you on board. I finally found a contractor that is actually available to start very soon so if his quote is reasonable I may finally move out from my virtual play world

Thanks rs...I was hoping others would agree it doesn't look like a venting problem.

My plans originally called for the 2 return air ducts to draw air directly from the PJ shelf. However after calculating FPM estimates and such I realized the PJ could mess with all that effort and cause some flow restriction right where it matters most. You can see in this overhead shot that I cut out 2 registers in the bottom of the soffit so I guess that might still be close enough to draw some of the heat that might accumulate near the ceiling/PJ.

From what I have read about the panny I will need the lens centered horizontally on the screen if I want to use the lens memory and keep the image centered on the screen regardless of aspect ratio.

I'm running 8" flex duct in the joist cavity above my room's ceiling. It the punches through the ceiling and terminates right inside the soffit. Any suggestions how to attach the flex duct to the hole in the ceiling?

Tweaking my soffit design. Here's a handy table to help with unsupported spans of MDF and how much sag can be expected. Any suggestions where to buy 1" thick duct liner?

http://www.compositepanel.org/userfiles/filemanager/78/

Interesting idea AXGAMD. I might be able to do that to the right of my PJ but behind the PJ and underneath the soffit is 6" of OC703. I may keep that idea in my back pocket and see how hot things run. Thanks.

I am finalizing my soffit lighting locations and zones. I will have separate front and rear zones (on dimmers) . I'm pretty sure I'll be using the same LED lights as the Cinemar build . I can't decide if the cans in the middle of the room should be included with the rear or front zone. I included some images using these LED light's IES files to show the lighting thrown onto the screen.

Overhead of can light locations:



Screen with all side-soffit lights on:




Screen with front-most soffit lights off:


There seems to still be a small portion of the screen affected by the soffit lights in the middle of the room. Should I include these in the rear zone to avoid this little bit? Thoughts?

Thanks Nightlord. I haven't sketched the actual wall fabric yet (and yes the door will also be covered in fabric) so you can ignore the brightness of the walls/floor.
I was actually leaning towards putting the middle cans in the rear zone. I would likely only leave the rear zone on during more social viewing like sporting events. I wonder if my front row would be too dimly lit if I put those lights on the front zone?

Thanks for the vote NL, anyone else care to share their opinion on lighting zones?

I bought a pair of 15" Rythmik subs and the Emotiva amps a few weeks back. I'm now looking into a preamp to drive these guys. Starting to look at Integra DHC-40.2 and DHC-80.3....the 40.2 is over 2 years old, I wonder if they will be coming out with newer models soon? Any other recommended preamps to help me narrow down my searching?


I picked up 2 of the FV15 model:





Emotiva XPA-5 (center and surrounds) and the XPA-2 (mains):

I can't say that I did a lot of research on the subs. I relied mostly on bpape's recommendation that these were a great value (servo driven, adjustable damping, EQ....).

I just ordered my Denon AVR-4520CI prepro from Mike at AVScience. Well actually it's really a receiver with 9 channels of amplification. I plan on using my Emo's to power my 7 channels but now that I'll have lots of extra amps in the Denon I started thinking about going with 9.2 or even 11.2 setup......I realize there is no source material with true 9 or 11 channels but with Audyssey DSX or DTS NEO:X processing onboard maybe I should consider setting up some front wide speakers? The first movie 'optimized' for 11.2 came out recently (The Expendables 2) and some appear to really like the effect for movies and sports. Anyone have experience with this? Recommend it? Does my positioning look OK?


Showing possible location of front wide speakers:




I set the height of the front wides to be on a straight line between LCR and side surrounds:

No thoughts? Anyone? Maybe it's something I said...or is everyone a little busy with last minute shopping

Thanks NL, I'll have to wander over to the Audyssey thread.....or are you referring to an Audyssey forum on another site?

Thanks NH, In the sketch I have my wides about 9" higher than the mains. I can lower them if that's an issue. My main concern for now is whether setting up wides is "worth it" given my size room and setup. Are the simulated (matrixed) channels worth the extra cost and effort in setting up?

^^^ Yes I'll be hooking up the wides because I also heard they have a bigger effect vs the heights. I think I'll use the 4520's internal amps for the rear surrounds and the Emo's for the rest. My plan now includes tweeters at the same height as the LCR and angled MDF columns to conceal the wides.

Planning on ordering 1/2" fabricmate track. Here's my 2x2 furring channel the track will be attached onto.

Side Wall





Back Wall