Vintage vs New

Come on now

millercarbon
There are no vintage speakers can hold a candle to Tekton Double Impacts

Even you know that isn't true.

https://jeffsplace.positive-feedback.com/the-vintage-beat-the-altec-lansing-voice-of-the-theatre-a5-...

In the book Grateful Dead Gear by Blair Jackson, ‘Bear’ (Owsley Stanley), the Grateful Dead’s sound man for many years, described how he introduced the Grateful Dead to the ‘Voice of the Theatre’ loudspeakers and McIntosh MC240 amplifier he used in his home stereo in Berkeley. The impressive sound quality that Bear’s ‘Voice of the Theatre’ & McIntosh MC240 hi-fi system was capable of inspired The Dead to develop a practice system based on ‘Voice of the Theatre’ loudspeakers and McIntosh amplification, which also served as their early PA system.

Practical ,definitely not but should be able  hold their own against the double impacts.  We have come a long way creating full range sound from a smaller and smaller enclosures but unless you're using DSP vintage and current  crossover components still use resistors, capacitors and coils and drivers are still based on electricity through coils(yes there are other technologies AMT ribbon electrostatic...).  Teckton has  developed a low mass midrange array but compression horn drivers employ the same philosophy by using a 1 inch low mass driver.

I'm sure there are other examples of 70 era speakers still creating amazing sound.  
Quad ESL come to mind.  I haven't had a chance to hear them but there are people who swear they are the best speaker ever made.