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AM FM Phantom on eBay - non Scott tweeters?

There's a AM FM Phantom on ebay (112285817711), close enough to me to make it a possibility. It looks like the tweeters are a generic replacement, but wanted to see what the experts think. The numbers on the tweeters seem to be pre-EIA codes so I can't tell the manufacturer. Any thoughts? Thanks!

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I am confident that the tweeters are original.  The record changer is obviously not.  I have got to tell you though, I have never seen that cabinet before.  It is a Scott cabinet along the lines of their Devonshire and Buckingham cabinets (both seldom seen) but unlike those, it is a credenza for accommodation of the radio and phonograph.

Norman

I'll echo Norman's comment...this is a rare cabinet (the Adam), however, it would be a whole lot better if he had the doors. They are irreplaceable. I have pictures of one other Adam cabinet in my archives, not this one, so there is an example out there to work from....

Thanks for the replies Norman and Kent. How can you tell they are original? I'm familiar with the field coil tweeters for the All Wave and the later "bullet" style, but from all the literature I have (from my Dad) I don't recall seeing a tweeter like that. Karl

The fact that they are field coil tweeters pretty much establishes them as pre-WWII.  They are essentially the same as the bullet tweeters without the magnet cover.  Late in the production of pre-WWII products, some materials were in demand for defense production hence no chrome on some late pre-WWII power transformers.  The bullet shaped magnet covers were aluminum and likely unavailable at the time the set was made.  Wiring to the tweeters is also exactly what I would expect of an original tweeter.

Norman

In my original post I was going to mention that the tweeters looked to be field coil types, but the tweeters used on the Phantoms and most Philharmanics were PM types. So either someone modified the crossover box to feed B+ to the tweeters, or the speaker panel is not from this set, even though it is original (probably to a Philharmonic). Probably going to pass on this one... Thanks for the info Norman!

Karl

As part of the optional "four unit speaker system", the tweeters were provided both ways, field coil or permanent magnet.  I do not know why both types were used at different times but it was a production change.

Norman

My unrestored Scott Laureate has the coaxial version 15 inch Magnavox speaker. The tweeter, centered inside the big cone,  is a field coil type. The separate outboard crossover has a 35Z6 rectifier for the tweeter field power supply.

I speculate maybe Scott returned to field coil tweeters in 1941 because prewar permanent magnet tweeters were loosing enough magnetism to become a problem. My impression is the superior Alnico alloy steel magnets were new tech and probably limited to war time use.  

Gents, you can clearly see the crossover chassis mounted vertically that was part of the "High-Fidelity" option on FM Phantoms and Philharmonics and normally came with two-pin connectors for each of the PM tweeters. In this discussion it sounds like there might have been another crossover chassis that permitted field coil tweeters(?). Coincidentally, I re-capping my FM Philharmonic for the second time in 54 years. I was given this set in 1963 while in 11th grade. It has the three speaker option and the PM tweeters sound wonderful. Some time ago I put a GE VR cartridge (with preamp) in the Garrard changer and 78's sound great.

Tom

I would not say the crossover chassis "normally" came with two pin sockets.  I have seen some crossover chassis with two pin sockets and others with four pin sockets for the tweeters.  The GE VR cartridge is one of the best for playing 78 rpm records.

Norman

Norman,  my crossover may be a later one? The crossover point is stamped "6 kc" on the bottom. From what I've read, the crossover point was originally 2 khz according to Riders volume 14 which also shows connections for PM tweeters.

By the way, the AM-FM Phil schematic is a challenge. There many differences to what I see on my set. I've seen you remark in the past that the wiring in the set should not be changed to match the schematic!

Thank you for your valued support on Scott equipment!

Tom

I don't think those speakers go with that set. 

The guy states that the cabinet hole is 12" and the speaker is 15".  You can see the mounting holes where the original speaker was in that cabinet.  The speakers are from a Scott set, but I don't think this one. 

Good point!

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