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Topic: Elmo 1200 HD Amplification
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Chip Gelmini
Phenomenal Film Handler
Posts: 1733
From: Brooksville, FL
Registered: Jun 2003
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posted December 17, 2008 10:42 AM
On Brian's original post at the top:
Those connections will work fine.
Just remember that your projector volume control will effect the receiver input. If the sound volume on the Elmo is down and the knob on the receiver is up, you won't hear anything.
Depending on the output gain inside the projector, here is the best advice:
Set both knobs to zero volume.
Locate the black dot on the volume knob at the projector.
Set that to about TEN OCLOCK position.
Start the movie.
When picture hits the screen and you know there is active sound
Turn the receiver up to a comfortable level.
Depending on the record level on the said movie print, these steps will vary.
Be VERY careful, not to bring it up too loud. This avoids speaker damage.
As I said be very careful, and you shouldn't have problems. You will easily learn how this works, and the sound is so much better when sent through an external amp system, regardless whether it be mono or stereo.
As an added bonus, if you are using as Pro Logic system, experiment with the settings that it can do. Depending on the brand, you might have a mode called MONO MOVIE or CLASSIC FILM. This takes the single track signal and spreads it out to all 5 channels, creating a slight echo effect. The idea is to simulate a huge theater with only a few people in it. Classic films made before 1970 might sound better this way if you like this sort of thing.
If you're not sure, stay with standard Pro Logic and/or Pro Logic Enhanced mode. This sends main dialogue to the center channel, and bass to the left and rights.
If you do not like Pro Logic, try turning the "pro logic effect" off. This turns your Pro Logic system into a standard 2 channel amp.
As always, make sure your sound heads are clean for best results. And don't forget if you have several shorts on one large reel, record levels vary. Some will be louder than others, so expect to make changes as the titles change.
If you're running Optical sound movies, don't be surprised if you're turning your amp and projector levels to almost 12 noon hour position, as optical sound is recorded lower than magnetic.
I would, however use 12 noon hour as the absolute limit and not push the sound system or projector past that point. It probably would be OK, but I feel as a safety issue if you're at 12 noon and it's not loud enough, then you have to make other changes for the better, such as stronger amplifiers to handle what you are trying to do.
Any receiver or series of integrated amplifiers between 30 to 100 watts per channel should be fine and handle the load.
~ Chip ~
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Rob Young.
Phenomenal Film Handler
Posts: 1633
From: Cheshire, U.K.
Registered: Dec 2003
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posted December 18, 2008 10:52 AM
Yes, the monitor outputs are low and I know others have used methods of boosting the signal pre-amp.
But as Chip points out, if the amp is powerful enough (in the range he suggests) then you should be ok; although, yes, in my experience you do have to drive the amp a lot harder than usual.
Just as a side note to this, I find that each time I power up the Elmo and amp, the plugs in the monitor outputs require a little twist each way to illiminate any earth crackle; maybe this is just my Elmo but it is worth remembering that if you need to "fiddle" with the connections, or indeed unplug them, make sure the amp is set to a low volume setting as the resulting pops and bangs can be lethal to your amp / speakers at the higher than normal listening volume!
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