All Pre 1970 Vintage speakers suck! Prove me wrong

I have an International Projector Corp. 1940's horn and folded cab I rescued from an abandoned adult theater. Yes it's mono, yes its massive, and yes it now resides in my garage. But man does it rock. 

I'd argue that i get just as much enjoyment out my free(ish) find, than I do all my other kit. 

I just picked up a pair of Pioneer CS99A’s at an estate sale. They sound fantastic with my Outlaw RR2160MKll and Outlaw M8 Subwoofer for 2.1 sound, They are fracking heavy suckers, weigh 49lbs each, I picked up some Herbie’s tenderfeet to get them off the floor. When I kick in my Dahli’s for 4.1 sound, it sounds even better (when I crank it up). To each his own I guess. I don’t have to prove anything, sounds great to me and my wife.

In your opinion, which pre-1970's speakers suck the best?

AR3A’s have no bass? Get the ear wax out of your ears!

Doyle,

IPC made terrific speakers.  The drivers, in particular are still highly prized.  You are quite lucky having it.  I know of a few mono systems built around vintage drivers.  One of my favorite speakers is a mono system that Deja Vu Audio built not long ago that has a big bass cabinet (I believe it is a sealed box) with an 18" woofer and a very old and funky looking Raycon midrange horn and compression driver.  The sound is really quite hard to beat.  

With vintage parts, the trick is to find pieces that still match 70 years after manufacture.  That means that stereo systems are MUCH harder to make than mono systems because the left-right matching has to be quite exact. 

Deja Vu Audio (a Northern Virginia retailer who also builds custom speakers) has a small collection of Western Electric 713b drivers because they buy them hoping to get them paired up--they have about six or seven now and none match.  Pricing reflects this--you can find single 713b's for as little as $5,000 but matching pairs from a reliable source are well over $20,000 these days.

If one's priority is at the frequency extremes--very deep impactful bass, and extended and well dispersed high frequencies--it is true that modern speakers deliver these qualities at quite modest price levels and in compact packaging.  Vintage designs, even with 18" woofers don't go super deep, but they deliver great tone, and nimble sounding bass.  This is why I don't necessarily disagree with the OP even though I much prefer speakers utilizing some very vintage drivers.