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How do you connect your Elmo ST-1200 HD to Stereo Amplifier?

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  • Ali Hipperson
    replied
    Hi Ken, rest assured that it is now established on my 'to do' list! 🙂

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  • Ken Souza
    replied
    Thank you Maurice and martin for the links, information in pictures. That all help. I am going to go to BestBuy tonight and see if they have those plugs and report back in a couple of days.

    Ali, you better get started on that new projector for your sound When I had a GS-1200 it is so worth have the best sound possible!!

    Ken

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  • Ali Hipperson
    replied
    Well Steve and Ken, you've more than convinced me so I'll make that another project to get on with as soon as possible 🙂

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  • Martin Davey
    replied
    This is the plug I use to gain 2 channel mono from a single channel, as mentioned in my previous post. It goes into the projector, either aux or headphone. Note that the male end is a MONO pin. As the amp has a front 3.5mm input socket I use that and have a long lead (3.5mm at each end, stereo) to connect the projector to the amp. Many adapters are available for RCA phono and 3.5mm combinatons and use similar bodies, but you should check as I said with the seller to make sure it converts one channel in to two. Most adapters do not do that, but instead convert a stereo RCA phono into a 3.5mm stereo plug, which would be wrong for achieving 2 channel mono.
    If you want stereo sound, from a stereo print, then you have no choice but to use the very low level green sockets as Maurice describes above.

    https://www.ebay.co.uk/itm/2-x-3-5-m...8AAOSw41xXPEua

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  • Maurice Leakey
    replied
    Are we talking about an Elmo ST-1200 HD 2-Track? If so, the instructions are as follows:-

    "To reproduce sound through a stereo set connect the green monitor jacks with input jacks on a stereo amplifier. Track 1 is left channel, Jack 2 is right channel."

    These green jacks are at the top of the rear left side panel marked MONI 1 2.



    Maurice

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  • Ken Souza
    replied
    So true! Even the old Laurel & Hardy's and other older films sound so much better. Now I all I need is curtains around my screen

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  • Steve Klare
    replied
    Oh, you bet!

    Doing something like this changes the experience of projecting a print a lot.

    -it makes seeing them again well worth it! (Wellll...other than the silent ones!)

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  • Ken Souza
    replied
    Howdy,

    I just did as Steve suggest with the Aux plug near the speaker. I got beautiful controllable sound! My receive is about 25 feet from the project and I used the Video audio input on a Pioneer VSX receiver. With the splitter form the project to the amp it was super clean and loud sound. Once I got the volume out put from the projector just right, the receiver was easy to adjust the volume and no distortion. Now I need to rerun a number of prints

    Thanks to ALL!

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  • Steve Klare
    replied
    Hi Ken,

    I use the Aux. by the speaker (on the side cover). It is derived from the signal that powers the internal speaker and cuts it off. When you plug in there you get a nice line level signal that should be useful for powering up the typical home stereo amp input. As a bonus, it is controlled by the volume knob: not all Auxes are. When your amp lives a distance from the machine, having no local volume control makes projecting a sound film kind of a foot race.

    On my Amp, I use "tape", although it will become awkward if I ever decide to plug my cassette deck in! If you have a turntable input, these are too sensitive and will sound really terrible! (-been there...)

    Ali, going to an external sound system makes a tremendous difference and I count it right up with getting a larger screen, and maybe even making the leap to any sound at all as something that has made this hobby more enjoyable. It has it's challenges along the way, but those can be very rewarding to solve.

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  • Ali Hipperson
    replied
    Hi Ken - you saved me having to raise this topic as I will shortly be in need of the same advice!

    Steve - timing is everything, and as someone who's never been into 'sound' matters and their options and potential, your articles and link above will no doubt 'show me the way' - so many thanks for that 😊

    Leave a comment:


  • Ken Souza
    replied
    Thank you all. I am going to get the adapter. Everyone has been must helpful!!

    One last question (Maybe). When I get the Stereo Jack Plug that Maurice points out and I will pick up the adapter the Lee showed a picture of. If I am understanding plug it in to the Aux plug by the speaker is best? Wanted to check.
    Ken

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  • Maurice Leakey
    replied
    If it's to connect to a stereo amp then perhaps an adapter with a stereo plug would be more suitable.
    2 Phono to 3.5mm Stereo Jack Plug Adaptor, Splitter - Pro Signal | CPC UK (farnell.com)

    Maurice

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  • Tom Photiou
    replied
    All the years ive been in this hobby all ive ever done with our 1200HDs is to plug the aux out into an old pioneer stereo amp via a single mono to twin plug stereo lead and we get excellent twin mono sound. It blows the roof off it i need it to but with only a handful of 8mm films being true stereo, these get viewed on a different projector.

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  • Lee Mannering
    replied
    Yes you can buy a suitable adapter which has a plug on one end and two phono sockets at the other, a handy thing to keep to hand.
    Various types are available. Mini jack or 1/4" etc.

    Click image for larger version  Name:	plug.jpg Views:	0 Size:	47.8 KB ID:	28067

    If your amp has Digital optical input you can go a stage further and buy a Analogue to Digital converter box. I use one on a Sankyo projector.

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  • Martin Davey
    replied
    One thing you may need is an adapter, at the output of which ever audio output is used on the Elmo, to convert the single channel sound in to double channel mono sound. That is not the same as stereo! When you plug a mono source in to a stereo amp the sound will come out of one channel (the left). It can sound weird if you have a speaker on either side of the screen. If you convert the sound in to double channel mono sound then the sound will come out of both speakers on a stereo amp, and be placed seemingly from the screen. If you are using a pro-logic setting/ system then the sound will be placed in the center channel.
    If you buy something of that nature on Ebay, check with the seller to make sure it will turn a single channel in to dual (L/R) mono output.
    You adjust the level of the sound output using the volume control on the Elmo, so be careful.
    If you use headphones to listen to the sound then the mono adapter described will be needed, otherwise it will just be in one ear. You use the yellow MONI output for headphone use, not the aux output which is for an exernal amp.

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