[belmore]

Is there a lens available that I can use to increase the throw distance of the JVC DLA-G15U? I have a 110" diagonal 16x9 and want to be able to put a G15 in my equipment closet that is about 26 ft from the screen. Any suggestions? I looks like the stock lens would only allow me to put the projector back about 20 ft. max. I hate the idea of having to build a hush and rip up my ceiling, etc. to try to provide ventilation.

 

[ChuckD]

JVC might have a long-throw lens for it. Expect to pay $1,500 to $2,000 or more for it. You could buy one heck of a hush box for that money. I shouldn't talk. I paid $1,100 for a long-throw lens for my Sony 400Q so I could put it behind a wall. I got that lens from Buhl. http://www.buhloptical.com/ They might handle lenses for JVC.


Chuck Davis

 

[ChuckD]

Another thing you could do is increase your screen size. I don't know where you got your figures from, but the lens calculator on Projector Central gives a figure of more than 23 feet for your size screen. The distance is relative to the picture width, which in your case should be 96". By increasing your screen size to 106"+ width, that should allow you to place the projector 26 feet away. You could also build some sort of box frame to move your screen a couple of feet away from the wall that it's on.


Chuck Davis

 

[belmore]

Thanks for the responses, Chuck!


I decided to get a G15 after buying and returning an LT150, because I was uneasy about having to live with the rainbows. At any rate, I'm way, way over budget now! I'd hoped that a longer throw lens (or some sort of attachment) would be in the hundreds of dollars, not the thousands. It constantly amazes me what some this stuff 'costs" (vs. what I personally think it's worth).


You are correct, after recalculating, the throw distance is about 23 ft, but that's still about 2-3 ft to short. Trading up to larger screen size or moving my screen closer aren't particularly appealing either. My theater was designed (by Dennis Erskine) to accommodate a 110" screen. It wouldn't be pretty or inexpensive to change. *Sigh*. I guess I'm just out of luck. I'll just have to see if the G15 runs as loud and hot as others have said and decide what to do from there. Thanks again for the suggestions!

 

[Tony / Premier AV]

Belmore,


Well... it sure looks like you've either got to build the hushbox, or spend the bucks on the lens. http://www.avsforum.com/ubb/frown.gif The minimum I can come up with is 130". http://www.avsforum.com/ubb/frown.gif


Don't feel bad though... I've had several clients that went into a design thinking one thing, then in the end realizing that the projector just wouldn't work the way they were thinking. Heck, on one this year up in Alpharetta the client called me in after the sheetrock was up, and the wiring run for the projector. He and his neighbor decided on where they thought the projector would go, and ran an S-Video and 3 wire component there and that's it! http://www.avsforum.com/ubb/rolleyes.gif


Never mind the fact that he had not decided on a projector at that time, and that most will either take 5 BNC RGBHV, SubD 15 Pin, or that funky multi-pin on the DreamVision. <hehehe...> He almost flipped when I told him the only way he would be able to run a high-def signal to his projector from the scaler and switcher was to rip out the sheetrock and run new projector cables! http://www.avsforum.com/ubb/biggrin.gif


In the end I mounted a shelf under his DreamVision and put a Crystal Image up there and just ran only component or S-Video at 480i. That was actually his only choice. OTOH it looks GREAT on his 110" 16:9 screen. http://www.avsforum.com/ubb/smile.gif


Later,


Tony / Premier Audio Video

(down on the southside)