mojim
09-14-08, 10:31 AM
I think I have settled on the Rs20. Any ideas of where I should put the electrical box on my ceiling? Anybody know what the throw distance will be?
JIM
JIM
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View Full Version : Throw distance for the JVC RS20? Same as the RS2? mojim 09-14-08, 10:31 AM I think I have settled on the Rs20. Any ideas of where I should put the electrical box on my ceiling? Anybody know what the throw distance will be? JIM mark haflich 09-14-08, 10:37 AM mlang posted that the zoom range on the RS20 was less than the zoom range on the RS2. This is a good thing for picture quality because the narrower the zoom range, the less compromises in optical design. Unfortunately, one loses some mounting distance flexibility. I'll see if I can locate the new throw distance parameters for you. millerwill 09-14-08, 10:46 AM mlang posted that the zoom range on the RS20 was less than the zoom range on the RS2. This is a good thing for picture quality because the narrower the zoom range, the less compromises in optical design. Unfortunately, one loses some mounting distance flexibility. I'll see if I can locate the new throw distance parameters for you. That would be super, Mark. I certainly hope that the min throw is not significantly less than the RS1/2. R Harkness 09-14-08, 10:47 AM Really? Every report I've seen, including JVC's specs, have the RS20 with the same zoom ratio as the RS2/RS1. ??? mark haflich 09-14-08, 10:56 AM I don't know for sure. The only specs I've seen say a 2x zoom. I don't know how to convert that to a throw range or whether that is enough to do so, i doubt it. I think i remember in reading one or two of Mlangs post that he said the zoom range was less. a narrower zoom range does mean a narrower throw range. that's about all i know here. I'll look earlier in the thread for what mlang posted. mojim 09-14-08, 10:57 AM One website has the rs2 at 13'...does that sound right? That puts the projector right over my head. Also, Doesn't the placement of my projector depend on my screen size? I think I am going with somewhere between 106-110". Thx! John Ballentine 09-14-08, 11:03 AM Really? Every report I've seen, including JVC's specs, have the RS20 with the same zoom ratio as the RS2/RS1. ??? I was told by JVC that it's exactly the same as RS1/2 millerwill 09-14-08, 11:05 AM One website has the rs2 at 13'...does that sound right? That puts the projector right over my head. Also, Doesn't the placement of my projector depend on my screen size? I think I am going with somewhere between 106-110". Thx! The THROW RATIO--the ratio of the distance from screen to lens, to the width of the screen-- of the RS1/2 is 1.4-2.8. E.g., with a 110" diag screen, the width is ~ 96", so the lens-to-screen distance must be between 134" and 268". mark haflich 09-14-08, 11:07 AM Of course the placement depends on the screen width. A throw range is a multiplier range. You take the short end range number (say 1.4 or whatever and the long end range number (say 2.4 or whatever) and multiply by the screen width and ergo you get the throw mounting distance range. You need to know the range first. It could be 1.5 to 2. 1.8 to 2.2. Lots of ranges are possible. I don't know whst it is with the rs20. tzucc 09-14-08, 11:17 AM I really would not worry about it being over head. As several of us have written, you have to put your ear within 3-6 inches of the projector to hear any noise... with any sort of ambient film noise level at all, you cannot possibly hear it. R Harkness 09-14-08, 11:32 AM I'm still amazed how this new projector (purportedly) hits all the checkmarks I needed for my projector purchase: I'm mounting the projector close behind the viewing sofa and worried a bit about the noise of the RS2. I wanted a fairly big screen size and wrung my hands over the dimmer nature of the RS2 vs RS1 and choice of screen materials. I desperately needed the lens shift to be motorized along with the zoom/focus to better facilitate my intended zoom-method, constant area-type approach. I worried about whether I'd need to buy a radiance VP for the RS2, for the colors. While a sharper image wasn't strictly necessary, I did want it if possible and envied some projectors with sharper images. Now the RS20 comes along: Quieter? check. Brighter? check Ability to vary brightness? check. Motorized lens shift/focus/zoom? check. CMS to dial in color? check. Sharper image? check (purportedly). Couldn't have asked for more, in my situation. (Discrete codes for V-stretch/lens functions would be the cherry on top). mark haflich 09-14-08, 11:46 AM For all that it does, we still didn't get world peace. Sigh R Harkness 09-14-08, 12:44 PM Well, I want discrete codes before world peace. I'm not being selfish am I? RonF 09-14-08, 12:46 PM I'm still amazed how this new projector (purportedly) hits all the checkmarks I needed for my projector purchase: I'm mounting the projector close behind the viewing sofa and worried a bit about the noise of the RS2. I wanted a fairly big screen size and wrung my hands over the dimmer nature of the RS2 vs RS1 and choice of screen materials. I desperately needed the lens shift to be motorized along with the zoom/focus to better facilitate my intended zoom-method, constant area-type approach. I worried about whether I'd need to buy a radiance VP for the RS2, for the colors. While a sharper image wasn't strictly necessary, I did want it if possible and envied some projectors with sharper images. Now the RS20 comes along: Quieter? check. Brighter? check Ability to vary brightness? check. Motorized lens shift/focus/zoom? check. CMS to dial in color? check. Sharper image? check (purportedly). Couldn't have asked for more, in my situation. (Discrete codes for V-stretch/lens functions would be the cherry on top). Rich, where are you with your room now? Have you officially moved out of the planning stage and actually are working on the implementation with the paint, materials, screen, seating (if any new required), etc? R Harkness 09-14-08, 02:00 PM Rich, where are you with your room now? Have you officially moved out of the planning stage and actually are working on the implementation with the paint, materials, screen, seating (if any new required), etc? Almost. I've ordered a couple of things but I'm still stuck on whether I'm going to pay for an acoustician to implement his suggested plan. I bought a 2nd hand Panasonic projector, with the same zoom ratio as the JVC, to help me decide on screen orientation etc. It's all killin' me. But the new JVC projectors will help me in some respects. noah katz 09-14-08, 03:34 PM "For all that it does, we still didn't get world peace." :) What do you think this is, a beauty contest? stalin12 09-14-08, 03:41 PM you have to put your ear within 3-6 inches of the projector to hear any noise R Harkness 09-14-08, 04:31 PM That's amazing stalin12. I presume then you saw it? Can you add your impressions of the new JVC projector to this thread? Thanks. mark haflich 09-14-08, 05:53 PM I checked with Michael Lang and he thinks the zoom range and throw distances are the same as on the RS1/RS2.. mojim 09-15-08, 01:25 PM thanks. I went ahead and had them put the outlet at 14'. That way I cand put the projector within a foot of that either way and should be fine. noah katz 09-15-08, 02:00 PM "That way I cand put the projector within a foot of that either way and should be fine." Of course; you are aware that the JVC has a large throw distance range? |