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I would like to make the case for removing the internal speakers on the Elmo GS1200. I did this several months ago on my GS that I have converted to 250w ELC Halogen lamp, and I was looking to see if anything was to be gained by removing them, in particular did it help reduce internal temperatures around the printed circuit boards.
I have no hard facts to offer, in order to do a scientific study I would have to mount multiple thermocouples at various points inside the projector and run before and after tests. So what I say is just basic observation.
The two speakers totally block any air flow into the projector from the back cover, except maybe a minor amount over a small area above the rearmost speaker, but even this is covered by a cloth mesh which kills any significant flow. The main input for air flow is the small open grill area on the bottom of the back cover. If you put your hand over that bottom grill with the projector running in FWD with lamp mode you may feel some cool air being pulled in - I could feel none. Now remove the speakers and their associated cloth grills and repeat the test in FWD with lamp mode, placing your hand around the now open speaker grills, You will feels a stream of cool external air being sucked into the projector. So what does this buy you? In one word -reliability! Electronics life and reliability is a steeply declining function of increased temperature, a few degrees cooler in temp can buy a disproportionate improvement in system reliability. All of which sounds like a tonic for the fussy GS1200.
The other things to be gained are, a significant reduction in weight probably around 2 lbs, and no more snap crackle and pop when you are switching on and off.
So if you never use the internal speakers, and that is me, then remove them. Your projector will thank you!
And remember to keep the speakers and retaining clips safe so yo can easily pop them back in if you ever want to sell your machine. (the clips ,incidentally, are those horrible concave metal type which are a pain to remove but a snap to put back on)
I have no hard facts to offer, in order to do a scientific study I would have to mount multiple thermocouples at various points inside the projector and run before and after tests. So what I say is just basic observation.
The two speakers totally block any air flow into the projector from the back cover, except maybe a minor amount over a small area above the rearmost speaker, but even this is covered by a cloth mesh which kills any significant flow. The main input for air flow is the small open grill area on the bottom of the back cover. If you put your hand over that bottom grill with the projector running in FWD with lamp mode you may feel some cool air being pulled in - I could feel none. Now remove the speakers and their associated cloth grills and repeat the test in FWD with lamp mode, placing your hand around the now open speaker grills, You will feels a stream of cool external air being sucked into the projector. So what does this buy you? In one word -reliability! Electronics life and reliability is a steeply declining function of increased temperature, a few degrees cooler in temp can buy a disproportionate improvement in system reliability. All of which sounds like a tonic for the fussy GS1200.
The other things to be gained are, a significant reduction in weight probably around 2 lbs, and no more snap crackle and pop when you are switching on and off.
So if you never use the internal speakers, and that is me, then remove them. Your projector will thank you!
And remember to keep the speakers and retaining clips safe so yo can easily pop them back in if you ever want to sell your machine. (the clips ,incidentally, are those horrible concave metal type which are a pain to remove but a snap to put back on)
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