Speaker identification help please

[VMcLA1]

Can anyone help ID the speakers in these two pics? These are at an estate sale tomorrow and I’m wondering if they’re worth going to look at. Thanks

 

[KiM3Ce]

I'd say the ones on the right are no newer that 1970, unless they are Public Address speakers. If that square opening is a bass-reflex port, they may be built from a kit, maybe a Heathkit. Bass reflex design from back then is usually boomy. If the bottom rectangle is a midrange horn and the woofer is coaxial with a tweeter, they could be good. The ones on the left look newer but that logo is weird. Robust cabinets, nice veneer... If they're within 5 miles, go look! Take COVID precautions!

 

[VMcLA1]

They also have these little side legs if that helps in identification.

 

[KiM3Ce]

I'm thinking that means domestic, not public address. I bet these were made before 1964. Ask @mhardy6647, he knows everything!

 

[WillRobinson]

The speakers on the bookshelf are Quadraflex, ST-11 or ST-17.

 

[swechsler]

I'd say the ones on the right are no newer that 1970, unless they are Public Address speakers. If that square opening is a bass-reflex port, they may be built from a kit, maybe a Heathkit. Bass reflex design from back then is usually boomy. If the bottom rectangle is a midrange horn and the woofer is coaxial with a tweeter, they could be good.

The aspect ratio of that rectangular cutout is a bit odd for a horn, plus it wouldn't make sense to put it on the bottom. My guess is it's a vented (not ported) cabinet with a coaxial load. I don't think they're DIY, but in the 1960s and earlier some audio enthusiasts bought the drivers they wanted and then purchased a cabinet to install them in. Remember that this was years before Thiele/Small, so much of it was trial and error.