Question about NEC MT1075 Multimedia Projector

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Our church has two projectors Fron and Rear). Both are sourced from the same HP computer using SongShow Plus. The rear has an excelent picture quality. The front is very poor. The color is almost maxed out but the overall pic quality still looks washed out. The colors do not pop. Even the black backgrounds look grainy and washed out. Could the bulb need replacing or could it be signal loss. The units are feed with coaxial wire. The front projector is twice the distance from the source relative to the back. The front signal wire is probably 200 feet.

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You might need a new bulb depending on how many hours its been used, if over 2000, then yes. But 200 feet away from the screen is probably to far, especially if there is light on in the room your in, the further away the projector is makes each pixel beigger resulting to the less quality its going to be, the more light in the room, the less quality, try moving the projector closer to the screen or, by making it darker in the room.

Posted on Jul 12, 2009

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Is this a new setup or did the projector recently degrade. I have more questions than answers, but I will make some assumptions based on what i have todate. 200ft for a coaxial run is a long run and should be amp'ed up for proper signal strength on the other end. Front projection, screen is also reflecting all the room lighting as well. Rear projection by design deflects all ambientl light and allows the image to come beaming thru.

The projector referenced is a 4200 lumens that is good, but the resolution is XGA. If your using a single coax, my guess is your coming off a video switcher and that is a composite video signal. You have to things working against you. The video is 480 res at best and thus the projector is scaling to the xga res. That is grainy 101! Then the signal quality, and finally. If the assumption of the video switcher is correct, and your using pc graphics and converting them to video via switcher, you just hammered the high quality graphics and stuffed them down a tooth pic. I can help you solve this, but need more specifics. thanks

Posted on Jul 07, 2009

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Using composit cable will not help better to use VGA also what hrs do you hacve on the lamps and have the projectors had their 1000Hrs service?

Marc Engineer

Posted on Jun 17, 2009

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