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JVC RS40 an upgrade from Samsung SP-A800B?

post #1 of 15
Thread Starter 
Hi Everyone,

I have been happy with my Samsung SP-A800B projecting on a 120" wide 2.35 AT screen for several years now. The last projector prior to the Samsung was a Sony G70 crt calibrated by the best in the business, Ken Whitcomb.

I am considering purchasing a b-stock JVC RS40 from AVS to replace the Samsung in the main theater and moving the SP-A800B to the 'barn theater' which has a 144" wide 16:9 AT screen. AVS discouraged me from purchasing the RS40 for the 12' wide screen but sometimes I miss the deep blacks that the crt produced, and if it produces a nicer picture than the SP-A800B I would be game for that.

I know they are two different techs/looks. Just wondered if anyone else has gone this route and what their advice may be. I haven't been a huge fan of 3D in the past but Spiderman at the IMAX looked pretty cool last week.

What do you guys think?
post #2 of 15
And the 12 ft wide screen has a gain of only around 1.0. I didn't even ask at what throw the projector would be placed at.
post #3 of 15
Quote:
Originally Posted by edfowler View Post

Hi Everyone,
I have been happy with my Samsung SP-A800B projecting on a 120" wide 2.35 AT screen for several years now. The last projector prior to the Samsung was a Sony G70 crt calibrated by the best in the business, Ken Whitcomb.
I am considering purchasing a b-stock JVC RS40 from AVS to replace the Samsung in the main theater and moving the SP-A800B to the 'barn theater' which has a 144" wide 16:9 AT screen. AVS discouraged me from purchasing the RS40 for the 12' wide screen but sometimes I miss the deep blacks that the crt produced, and if it produces a nicer picture than the SP-A800B I would be game for that.
I know they are two different techs/looks. Just wondered if anyone else has gone this route and what their advice may be. I haven't been a huge fan of 3D in the past but Spiderman at the IMAX looked pretty cool last week.
What do you guys think?

I have not used a SP-A800B but I have owned a G70 and a RS40. the SP-A800B has been reported to put out about 600 lumens in calibrated mode while a RS40 puts out around 800 lumens with grey scale calibration to track 6500K. So if you are satisified with the brightness of your SP-800B on your existing 120" wide AT screen (which I assume has relatively low gain) then you should not have an issue with the RS40 on the same screen for 2D. However, for 3D you will probably find the image too dim unless you set the zoom for a smaller image size. As for 2D image quality, RS40 is certainly a step up from the SP-A800B in terms of black level and on/off contrast ratio and I find it overall superior to the projected image from my old G70 (not in black levels but in resolution, image brighthess, convergence accuracy, etc. as compared to the G70)
post #4 of 15
Thread Starter 
I looked up the gain on my screens. They are both Centerstage XD so I guess the gain is actually 1.2 not 1!
The JVC is looking a little better by the minute.
post #5 of 15
Is that the gain with the AT? If so things are looking better. What's the throw?
post #6 of 15
Thread Starter 
throw is about 18 1/2 feet to the 10' wide 2:35 screen.
post #7 of 15
The JVC will work fine on your 120 inch wide scope screen. I do thing neither machine is adequate to light a 1.78 aspect ratio screen that is 12 ft wide and which has a gain of only 1.2 After some bulb hours, in my pinion most would be unhappy with the brightness and become angry about the need to frequemtly replace bulbs. However, the Samsung bulb is very very cheap now, selling for only $150.
post #8 of 15
Note one thing...Centerstage is rated at 1.2. But often screens are not what they are rated. Let us presume it is, it is still an AT screen. That means regardless of the gain of the fabric, you still lose some light to the AT factor (in other words, when AT screens are rated it is not taking into consideration the empty space they have for the sound).
post #9 of 15
The Centerstage XD material was measured real world of about .98 gain.
post #10 of 15
Thread Starter 
Rats. I replaced a stewart studiotek 1.3 with the centerstage. I really do not think i could go back to having the speakers whrre they have to be with a solid scren.
post #11 of 15
Quote:
Originally Posted by SOWK View Post

The Centerstage XD material was measured real world of about .98 gain.

I did remember that, but all screens are really less overall. Main point was the gain of the fabric does take the loss due to transparency into consideration...
post #12 of 15
Thread Starter 
does anyone in central indiana have a rs40 in their theater that they would like to show me?
Or is there any store with one on display?
post #13 of 15
Thread Starter 
Reading about all the problems members have had eith the rs40, would a mitsubishi 9000 be worth the extra money?
post #14 of 15
Quote:
Originally Posted by edfowler View Post

Rats. I replaced a stewart studiotek 1.3 with the centerstage. I really do not think i could go back to having the speakers whrre they have to be with a solid scren.


Besides your appreciation of the improved speaker geometry, what are your other impressions of the Studiotek 130 to Centerstage change such as brightness, pop, weave visibility from your viewing distance etc? confused.gif

...Glenn smile.gif
post #15 of 15
Thread Starter 
even though the st130 was pro calibrated, it still had a blue-ish tint to it ( may have been the g70)
I am extremely satisfied with all the aspects you mentioned about the centerstage xd. I notice no weave what so ever. Pop is good because of the dlp pj.
In retrospect, I do remember losing quite a bit of sharpness that the Stewart had over the AT screen but that is the nature of the technology.
Over the years I just never paid attention to the loss of sharpness. I do however often appreciate the fact that the dialog/sound comes exactly from the actors on the screen, not from below or above.
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