or Connect
New Posts  All Forums:Forum Nav:

235 Build - Page 8

post #211 of 542
Thread Starter 
Quote:
Originally Posted by Nightlord View Post

Looks ok to me. Have seen plenty of basstraps with just holes in the top at the back, this should about the same. I'd probably stuff it all the way, though.

Do you mean stuff the riser full or the cavity below the OC 703?
post #212 of 542
Quote:
Originally Posted by 235 View Post

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

Actually I expected the riser to be full, so I meant the cavity, but since you asklike this... Both!
post #213 of 542
Thread Starter 
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:
post #214 of 542
Ok, I'm intrigued... and subscribed. I was a sketchup geek too but you are taking it to another level. Keep rolling along, I need to know how all this hvac planning comes together.
post #215 of 542
Thread Starter 
Quote:
Originally Posted by judsonp View Post

Ok, I'm intrigued... and subscribed. I was a sketchup geek too but you are taking it to another level. Keep rolling along, I need to know how all this hvac planning comes together.
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 biggrin.gif
post #216 of 542
Quote:
Originally Posted by 235 View Post

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:

Does your projector have lens shift function? If you can shift it side to side, you don't have to center the lens within the projector box and don't have to worry about the 4" on either side. My JVC vents in the front as well, and since the box is open in the front, there does not appear to be a ventilation problem. I don't think you would need to connect it to the cold air return. I remember that your plans call for a return not too far from the projector --- I would think that should be adequate.
post #217 of 542
Thread Starter 
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.

post #218 of 542
Thread Starter 
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?
post #219 of 542
Thread Starter 
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/
post #220 of 542
Quote:
Originally Posted by 235 View Post

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.

My projector is mounted just like you have yours planned, except I am using an Epson in my theater. I put some holes through the bottom of the shelf behind my projector to draw cool air from under the soffit. I then placed a small vent cover painted black to cover the holes. I planned to put some small computer fans to draw the cooler air into the box behind the projector intake, but haven't had a need to do it yet. I should probably take a temperature of the box to see how hot it gets and then decide on the fans.
post #221 of 542
Thread Starter 
Quote:
Originally Posted by AZGAMD View Post

My projector is mounted just like you have yours planned, except I am using an Epson in my theater. I put some holes through the bottom of the shelf behind my projector to draw cool air from under the soffit. I then placed a small vent cover painted black to cover the holes. I planned to put some small computer fans to draw the cooler air into the box behind the projector intake, but haven't had a need to do it yet. I should probably take a temperature of the box to see how hot it gets and then decide on the fans.
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.
post #222 of 542
Thread Starter 
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?
post #223 of 542
Definitely. The door is also popping out as too visible. It's also a good demo shot to illustrate why darker walls/floor is a good idea.
post #224 of 542
Thread Starter 
Quote:
Originally Posted by Nightlord View Post

Definitely. The door is also popping out as too visible. It's also a good demo shot to illustrate why darker walls/floor is a good idea.

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?
post #225 of 542
Quote:
Originally Posted by 235 View Post

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?

Ok, then I would go back on my comment. For occassions like that a little more light is not a drawback. Keep it like it is then.
post #226 of 542
Thread Starter 
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):

post #227 of 542
Check out the corresponding Onkyo models for price too, they may be cheaper for the same machine. I bought the service manual for 80.3 to compare with whatever the Onkyo model was called. It's identical apart from firmware and some extra connections enabled. Component list is identical. No mentioning of the supposedly better components for Integra.

I myself ended up with something else as I found the Integra (70.3 tested in my case) to sound a bit too hollow on some material (used the first Sherlock Holmes and SW episode I for testing). But it was a fun sounding machine especially for surround channels, so if one aspire to an experience rather than absolutely correct reproduction, they're making things a bit more thrilling methinks.
post #228 of 542
235,

What made you go with the dual Rythmiks compared to similar priced subs?
post #229 of 542
Thread Starter 
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....).
post #230 of 542
Thread Starter 
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:

post #231 of 542
Thread Starter 
No thoughts? Anyone? Maybe it's something I said...or is everyone a little busy with last minute shopping tongue.gif
post #232 of 542
I'm searching my memory about if I've ever read something about putting wides higher up. I don' think they're designed to be, but I cannot say how bad it would be doing so. Why not register at Audyssey and ask Chris' opinion, he tends to be good at answering..
post #233 of 542
I believe you are supposed to align the tweeters of your wides same as the front stage. They play matrixed content from front stage I would think it would be detrimental to have tweeters in the front playing similar content at different heights. I see what your trying to achieve with a straight line from wides to surrounds but IDK how that would work.

How much offset are you talking? A couple inches prob nbd but more than that.......idk

My wides function as part of or an extension of my front stage I went to some extra trouble to get their tweets aligned and its seamless, including pans which is what I assume your addressing.

Hope that helps.
post #234 of 542
Thread Starter 
Thanks NL, I'll have to wander over to the Audyssey thread.....or are you referring to an Audyssey forum on another site?
post #235 of 542
Thread Starter 
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?
post #236 of 542
Quote:
Originally Posted by 235 View Post

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

I'm referring to "Ask Audyssey" on their own page... they have a tiny forum. I think that was the name at least, I'm certain you'll find it anyway.
post #237 of 542
Quote:
Originally Posted by 235 View Post

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?

I have had wides set up in my space in the past and love them. I found your thread through the Denon 4520 thread so I am assuming that you're going with the wides? I had heights set up too but noticed an improvement in soundstage with the wides over the height speakers (but that was several years ago with a slightly older model Onkyo). If I remember correctly it was recommended to line up all the tweeters between the fronts and the wides.

T
post #238 of 542
Thread Starter 
^^^ 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.
post #239 of 542
Thread Starter 
Planning on ordering 1/2" fabricmate track. Here's my 2x2 furring channel the track will be attached onto.

Side Wall





Back Wall

post #240 of 542
Tracks over frames? Can you explain why you are going this route?
New Posts  All Forums:Forum Nav:
  Return Home