Building a Dinner Theater w/ DIY Speakers, Subs, etc... - Page 10

What is the ideal amount of space between the 4pi speakers and the back of the AT screen? I am designing the baffle wall.

Quick Question:

Up until this point, I have had one sub pre-out on the AVR connected to Channel 1 on an XLS1000 amp, and the other sub pre-out connected to Channel 2. Assuming the AVR is putting out the ideal 1.4V from each of the sub pre-outs, we can assume no adjustment was needed for the amp to get the juice it needed.

Now that I am working on the other two F20s, I changed the configuration on the AVR to having one of the sub pre-outs connected to both Channel 1 & 2 on the XLS1000 using a Y adapter. May I assume that the 1.4V from the single sub pre-out is now being split, and in fact only 0.7V is making it to each of the two channels on the amp? If so, do I need to double the voltage on each of the two sub pre-outs on the AVR to acommodate the 4 subs?

@tsloms: So you are saying that the impedance behing halfed means that each channel on the amp only needs 0.7V in order to achieve the same output level? Which means its kind of like wiring the two subs in series at the AVR/AMP level instead of at the speaker level?

Just a couple of things:

1) I have updated the first page with additional pictures.
2) I am designing the baffle wall, which also includes speaker placement and configuration. The diagrams below are what I have so far. Please feel free to critique.

I was looking at the BenQ SH960. I have a budget of $5,000 for the projector. I hope I am not going to have issues with making an image that SMALL from 28'...the throw ratio of the SH960 seems like the smallest picture will fit the 190" screen exactly?

Edit: Ah a light "cannon". I thought you were talking about a Canon projector that didn't weigh very much lol. I believe the SH960 is 6,000 lumens? I believe the equation is when you double the distance you quadruple the "dimness" of the image? If so, that would be the equivalent of 1,500 Lumens at 14ft, which sounds reasonable to me?

I did update the exterior picture, but you are right; I haven't really provided anyone here contextual pictures of the interior space. I have been spending most of my time running the electrical cables, speaker wires, and DMX cables, so the "ball room" has not changes much in terms of construction. I do hope to be building the baffle wall in the next couple of weeks, as I am nearly finished with the electricity (there was much to learn in that field as well). I will take some pictures this weekend for everyone to see the progress on that end as well. Thanks again to everyone for taking an interest! It has proven very helpful.

I think there will be some ambient light during most "showings" of anything. I might be able to get up to 200" or 210" ... but not much larger at 16:9. I have windows on either side of the baffle wall that will restrict screen size. Aesthetically speaking I suspect 190" is optimal. I could go 15' wide if there is no "border" around the screen. I have planned for 6" of border around the screen at this time.

There was a request for some more pictures of the interior portion of our project. Until I can get more pictures taken and uploaded, I have linked to some pictures below from the past few months that can be found on the winery's facebook page. Hopefully this will provide, for those that care, additional context that might assist you in making educated recommendations to my endless questions. :-) If you wish to view the construction album in its entirety, you can also follow the link below. Yes...I know there is a lot of glass in our Dinner Theater. We will address this with heavy drapes made of a sound absorbing material.

http://www.facebook.com/#!/pages/Van...0065?sk=photos


Main Level Blueprints



Upper Level Blueprints



Lower Level Blueprints



Ballroom/Dinner Theater West Wall (Baffle to be built here)





A view of the Ballroom/Dinner Theater Main Entrance. You can see a little bit of the slightly raised stage to the right.



A view of the Ballroom/Dinner Theater South Wall



Standing at the entrance to the Ballroom/Dinner Theater entrance looking at the Balcony. This picture is about a year old.



A view of the underside of the balcony and where the intended location of the projector. The idea is to mount it in front of the balcony support just under the overhang.



Standing under the balcony on the north side looking south.



Standing at the door way between the under-balcony and the wine tasting room looking Northeast to the "Gift Shop" flanked by two restrooms.



Standing in the middle of the gift shop looking at the two handicap accessable restrooms.



Standing on the north side of the tasting room (18' x 18') looking through the wall into the kitchen (18' x 11').



Standing on the Southeast corner of the "under-balcony" looking east into the kitchen.



Standing on the west side of the fermentation room (lower level) looking at its north wall.



Standing on the Northwest corner of the "Observation Deck" looking at the windows that separate it and the fermentation room. It allows tours to view the stainless steel tanks without having access to them.

Thanks for the link max...I had been there before, but not in a while. I think I now know where I got my 190" number. I forgot to take into consideration the thickness of the bafflewall when calculating the throw distance. The most accurate number I have right now is 26' 8". Below is a screenshot of the calculations.

I've purchased the wood and started throwing saw dust on the third and fourth F20s. You can also see the final four of twelve 1pis in the background. They just need a final sanding and painting. These six speakers & subs represent the last of the dinner theater's sound project.

And then there were three...

What do you mean?