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This topic comprises 3 pages: 1 2 3
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Author
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Topic: Best choice for new lamphouse
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Paul G. Thompson
The Weenie Man
Posts: 4718
From: Mount Vernon WA USA
Registered: Nov 2000
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posted 05-07-2002 02:05 AM
Brad, I was also wondering about that. I thought it was about 350CFM.Don, I have to agree with you on the Christie Consoles. That is a nniiiicccccceeeee unit. But Century......well, that is a different story.  Please don't get me wrong, but the Centruy by itself is a great machine. It is the Century R-3 loop grinding soundheads I have a problem with. I hate them. Kinda like Ford....they had a better idea, and the light bulb burned out.
If you park any Century on a SH-100* or an RCA MI-**** or any other soundhead that used the loose loop system, you have a combination that is almost impossible to match in quality. The LP-270 is a great machine.....I have always liked them. True, they sound like a lady of negotable virtues (i.e. whore) farting on start-up. When they stabilize, they were hard to beat.(competition, that is...)
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Pete Naples
Phenomenal Film Handler
Posts: 1565
From: Dunfermline, Scotland
Registered: Feb 2001
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posted 05-07-2002 02:10 AM
Rob, if you've got the cash take the Super Lume-X. I had one of the first of these brought into the UK at a cinema in Edinburgh. I replaced a well knackered Magnarc with a badly done xenon conversion. (Which uses the same mirror as that AEI or BTH 'biscuit tin' you've got). THe difference is quite striking. You've got light! Lots of it! You'll achieve the relevant SMPTE standards for light level and coverage without hassle, you can often come down a lamp size, as the optics are that much more efficient than the thing you have. Also I find bulbs last longer as the ventilation is going where it needs to, rather than where it needed to if the lamphouse was still burning carbon. The Super Lume-X ignitor is a lot quieter than the IREM that's probably in your biscuit tin, so you won't get that nasty buzz on the sound every time you strike the bulb.
Personally I like the IREM power supply, other than a loose core bolt and one popped diode, I've had few problems with these. I know others here will disagree, but based on my experience I think they are ok.Out of interest, what are you having fitted to the soundhead to give it reverse scan? Actually, which soundhead do you have? One of teh BA Kalee heads was reverse scan, one wasn't, I can't remember the numbers. I've been having success converting the forward scan heads to red light using a combined optic and laser device. You can use a standard ACL laser, but the ones I've done had poor optics (flat to 4 kHz!), so they had to be replaced regardless. You can fit a Jaxlight, but lets not go there, it's not really a viable option on the Kalee heads.
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Rob Jones
Film Handler
Posts: 44
From: Swindon, Wiltshire, United Kingdom
Registered: Jun 2001
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posted 05-07-2002 06:15 AM
I guess we'll be giving the ORC a miss then  It looks like the Super Lume is probably gonna be the one to go for...Pete, we're probably going with the component engineering ASR-30K. We looked at the Jax Light but after hearing some of the stories about noise we thought it'd be best to job the job properly, seen as how component also do a mounting bracket to properly fit the Kalee sound head. We've actually got two of em, one of which is reverse scan and the other not so - can't remember the part numbers off the top of my head either, but its the reverse scan thats in use at the moment.
There's actually a whole GK20 worth of spares sitting here as well - Jim Schults installed the current setup in 1989 after we nicked two of 'em from the central hall at the uni where they'd been sat doing nothing since about the 70's. The two got combined into one working setup and half a ton of spares which I reckon have been sat in the corner ever since. And how did you guess it was the biscuit BTH biscuit tin we had sitting there - It wasn't something I really wanted to admitting to still using I take it there's still quite a few of them floating around? As for ventilation, would, as Brad suggests, would a 300-400ish CFM exhaust fan be suitable, assuming that the extract to the vent on the ceiling is about 4 feet and a further 6 feet of ducting to the vent on the roof? Thanks very much for the advice, Rob
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Pete Naples
Phenomenal Film Handler
Posts: 1565
From: Dunfermline, Scotland
Registered: Feb 2001
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posted 05-07-2002 02:29 PM
I like the idea of the CE kit on the Kalee head, it gets a very good name, and I understand you can have a basement reader on there too. Mechanically those old Kalee heads are stonking, they run so unbelievably smooth, but the old optics are another matter.... Good to ehar you've ruled out the Jaxlight for that application. It does have it's uses, but BA/Kalee rep-sets are NOT one of them!How do I know you have a BTH?? Rob, look over your right shoulder, it's there in the photo for all to see! Actually now I know you've got one, I can count two that I know of still in use. They'd be more use as biscuit tins IMHO! The other one belongs to St Bedes Film Soc, at Durham. There was one on Rothesay, but I took great pleasure in throwing the thing in a skip, after I'd bolted a Super Lume-X in place of it. That figure for exhaust flow sounds about right. You might want to try a bigger fan than is really required, as invariably you end up with less than they are specified at, due to losses in the ducting etc.
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Rick Long
Jedi Master Film Handler
Posts: 759
From: Toronto, Ontario, Canada
Registered: Nov 1999
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posted 05-07-2002 07:54 PM
Question - Can you acheive the proper working distance with a GK-20 using a Super Lumex? I ask this only because centuries ago, we tried fitting a Peerless Magnarc behind a GK 20 and found we had to up from a 7 & 8 to an 8 & 9 trim to get sufficient screen light.Might not be a bad idea for someone to provide a measurement of a correctly aligned lamphouse from front of the lamp (physically) to the aperture plate to see if Rob has the room to fit a Super Lumex.
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