Vintage theater audio
- Thread starter nktrapp
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- motiograph rca
bowtie427ss
Lunatic Member
Yes. Actually, the MI-1433 woofer can be found as far back as 1936 catalogs. It was made by Magnavox.
It would be interesting to know what happened to the HF horn and driver that was almost certainly part of the sound system. RCA made a few large multicell horns for those systems.
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dr*audio
Fish fingers and custard!
You would be surprised? Look at the prices on 35mm prints of major films.
Interesting, yeah I wonder why that's missing and everything else is together. The building it's all in was also once a Radioshack in about the late 80's to early 90's, don't even get me started on what's left over from that. I'll check the attic and make sure it's not up there with the rest of the Radioshack stuff.
I'm sorry. What is OP?Just a guess, but to achieve tmv I would assume OP knows where to sell these items.
AK is a wealth of knowledge and I think OP is asking info only. I highly doubt these pieces are sold here unless at steep discount
Just a guess, but to achieve tmv I would assume OP knows where to sell these items.
AK is a wealth of knowledge and I think OP is asking info only. I highly doubt these pieces are sold here unless at steep discount
Yeah, these will be for sale elsewhere for sure if OP want to get correct value; FB speciality groups are full 'o cash for collectable items, AK not so much.
I started removing the speakers from the boxes. The pics are of the speaker that was behind the movie screen, it’s 18” in diameter and pretty heavy. It may be hard to tell in the photo but it has a hole in the center of it and the foam around the edges also seems a little damaged in places. How bad does that effect the value?
And also, what is the best way to clean this stuff up? The amps as well, I want to clean up rust spots without further damaging anything.
And also, what is the best way to clean this stuff up? The amps as well, I want to clean up rust spots without further damaging anything.
Attachments
is that label on the speaker box? can you take a picture of the back of the woofer, showing the magnet and any other markings? 18" drivers are not common. also, that might be fixable, by replacing the surround VERY CAREFULLY (learn how on less valuable woofers, or send to a pro who really knows how to baby it); if you want to resell, leave it to the buyer.
That is the picture of the back, I can get a more broad picture of it tomorrow.
I mean that is the back of the woofer, it’s been removed from the box.
swechsler
Frog Whisperer
For now, I would not try to fix or clean anything, with the possible exception of blowing dust off with some compressed air (and be careful around the speaker cones). Unless you're an expert in restoration of this sort of equipment, you're more likely to damage them and/or make them less valuable, rather than more.
swechsler
Frog Whisperer
It hasn't been mentioned yet, but those are field coil loudspeakers. Before the technology existed to make small, powerful magnets, speaker manufacturers used electromagnets (that's the field coil) instead. The 24V on the manufacturer plate is the rating for this coil.
Don't try to hook the speakers up to any modern equipment until you know what you're doing. You won't get any sound out of them.
Don't try to hook the speakers up to any modern equipment until you know what you're doing. You won't get any sound out of them.
I found that too, but it's about all I've found.
markshan
Sir Thrift a Lot
I don't know. That looks like a pleated paper surround that is part of the cone paper. For a proper repair you would have to recone the driver, and I don't know that you could find cone kits for that unit. You might try trimming it and adding a surround, or doing the coffee filter and white glue approach like you would repairing a torn cone, but either way it's a crap shoot with regards to both functionality and marketability. Whatever critter munched on that paper did a pretty nasty job.
If it were me I'd try to find some black construction paper, remove the gaskets and try to rebuild the outer edges. Again, it's a crap shoot. And I would only do that if I couldn't find an interested party to take it as is.
The dust cap is a much smaller deal.
swechsler
Frog Whisperer
We're already reasonably certain this is high-value stuff. Any repairs should be done by a pro with experience with this type of antique equipment, rather than attempted by an amateur. The sort of paper surround damage shown in the pic is not uncommon in antique speakers, and I'd bet some pros have a way of fixing it without reconing. No, it won't be cheap, but it's probably the only way to repair them without significantly reducing their value.
