Identify the old speaker!

[CoogarXR]

Ok, I'll start by saying I love the "identify the speaker" game as much as the next guy. But I am usually the one trying to DO the identifying, rather than asking for an identity. But I usually deal in 70s-80s kabuki, and lets say this speaker is outside of my sphere of knowledge, lol.

I picked this up at an antique shop, it's in a PA cabinet (wooden wall-mount box like you'd see in a school). No markings other than "PM 10-12" and "468687". Sorry for the crappy cell phone pics. I took these pictures in the store because I couldn't decide if I was going to buy it, then bought it anyway, lol. I'll take better pictures once I unload the van.

So any ideas on the make or model of this dusty gem? It is bigger than the standard 8", it's probably a 10". I'll have to measure it. I just thought one of you guys who deals in older speakers might recognize it from these Zapruder-quality pics.

 

[westend]

Looks like a field coil driver with that transformer mount on the frame.

 

[soundmotor]

PM likely indicates "permanent magnet".

 

[turnitdown]

Looks like a Utah

 

[CopperWizard]

My short research came up with Cinaudagraph 10-12.

 

[bowtie427ss]

Looks like a field coil driver with that transformer mount on the frame.

The transformer mount more likely indicates a wide range driver that could also be used in PA/distributed sound systems that use a constant voltage line and matching transformers at each speaker.

PM likely indicates "permanent magnet".

Certainly agree.

Looks like a Utah

The motor looks very much Utah. But, not the frame.

My short research came up with Cinaudagraph 10-12.

468 code indicates after they were bought by Aireon Manufacturing in Kansas.

 

[CoogarXR]

Nice. Thanks guys. I'll post more about it once I get it out and test it. It's just too dang cold now, lol