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This topic comprises 3 pages: 1 2 3
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Author
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Topic: Building a projector
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Adam Fraser
Master Film Handler
Posts: 499
From: Houghton Lake, MI, USA
Registered: Dec 2001
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posted 10-28-2002 09:31 PM
O.K. I was looking around the theatre to see what stuff we have just lying around and I came up with this.
2 Simplex bases
2 SH-1000 Soundheads ( I believe they still have phototubes) Where the led's would be there is a glass tube.
many various reel arms and magazines
many rollers and failsafes
1 old automation. The most prominent feature I can remember on it is a dial that lets you select the reel number. The unit is gray and measures about 30" tall by 20" wide. It was removed about 15 years ago.I think I can get all the stuff we have working and have been making a mental list of what I should be on the lookout for. Here is what I think I need so far. Simplex Picture Head
Lenses
Sound stuff (processor, amps)
Lamphouse
Power Supply
C/O Can anyone think of anything else I need. Or have any suggestions for me. I dont think I'll be using the automation except maybe to hook the start button and C/O to. Also, any suggestions on the equipment. I have never worked with phototube sound before.. but have 2 sh 1000's running with led's at the theatre. just thought this might be a fun project instead of tossing this stuff. ------------------
Adam Fraser
www.pinestheatre.com
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Geoffrey Weiss
Film Handler
Posts: 68
From: Lexington, KY, USA
Registered: May 2001
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posted 10-29-2002 10:24 AM
I have two SH 1000 heads that I've converted using a photocell. I cut the top off the glass envelope and mounted the cell right onto the old tube. The leads go right onto the pins and I use the head's wiring to send the signal out on the original wires. Even if the electronics are not vintage, I'd like to keep it looking as original as possible so people can see movie technology as it was in the 1930s (I teach film classes and most people know nothing about the technology of movies.).It saves having to mess with a 90V supply. All the info. you need to do it is here on Film-Tech, but I'd be happy to take you through what I did step-by-step. I didn't notice. Did you mention exciter supply? On the general topic of "building a projector," I've got sound from the SH 1000s, but haven't got picture yet. Over the weekend I realized I could just use the 750W lamp (reflector & lens) from an old RCA 16mm projector somebody gave me. I'll let you know how that works. BTW--I'm using two Simplex Regular heads (eventually hope to have both machines running and able to do changeovers), but I've seen plenty of Supers for sale on Ebay.
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Adam Fraser
Master Film Handler
Posts: 499
From: Houghton Lake, MI, USA
Registered: Dec 2001
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posted 10-31-2002 09:00 PM
Ok, I went digging some more. Here is a pic of the soundhead, it seems to be missing some kind of tube or lamp on the left.
 Here is the automation
 And here are the sound parts I found while digging around.
 Just Kidding, Id be killed if those readers ended up in my projector project. Any suggestions on the soundhead or what kind of automation that is?
------------------
Adam Fraser here
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Kenneth Wuepper
Phenomenal Film Handler
Posts: 1026
From: Saginaw, MI, USA
Registered: Feb 2002
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posted 10-31-2002 11:06 PM
Hello, Adam,The "tube" you are missing in the left of your sound head is the "exciter lamp". That is an incandescent lamp with a precision filament located in line with the optical track. Inside the sound drum you can see the reflector which sends the light from the soundtrack back to a photoelectric cell. The large black cover prevents stray light from being "seen" by the photocell. Automation? Modern readers, look like your theatre in Michigan. I don't think I would recommend borrowing any of the new stuff for your home project. KEN
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