Vintage vs Modern speakers.

I have yet to read the above article, maybe  when i have time will do so.

What I hear in both speakers is called
Resonances
Most folks , as yourself, have absoluetly no issues with resonances.
All speakers have soem degree of resonances. 
Some more, others less. I tend towards the very lowest possible resonances throughout the entire midrange say 200hz-5khz-6khz.
This is where my ears perk up intensive and alert to this mid zone. 
Place you speakers in a  smaller room and then you will be able to more detect  these  resonances = aka The Nasties.

As i say, most audiophiles fall in love with a certain speaker and have no issues with the resonances, they somehwo block these nasties out or just accept the good with the bad. Or they have not heard a spaeker with very low resonances thus have no reference point to compare.
I have past reference speakers thus I know what  designates acceptable level of resonances and what should be a  reject. 
Few speakers qualify for my acceptable level of resonances.

My speaker system still in development has shown extremely low level of resonances and I have futher developments to work out over the comming 6 months. 
It will  be the finest speaker on the planet, within the parimeters of this size and design and in most categories of critque.
If we give points to each quality ina  speakers voice, I think my design will come out top dawg.
Your 2 speakers have more SPL,  and so, you get high points there.
Mine will offer slightly less SPL but will have superior midrange etc etc.
All due to  thanks to recent developements  in WBer  designs. 
No I could not come around to either of your speakers. 

https://www.css-audio.com/single-post/2019/09/04/understanding-distortion

Lansche 4.1 is also high efficiency speaker (99db/w spec but real no is around 94db) which can be drive by low power tube SET amp

Thus I am driving two speakers with tube amplifiers.

But they sound slightly different.

Altec with 99db/w efficiency give no strain even if I raise the volume to ear aching level.

I am happy to have both.

~~~~~~~~~~~~~~~~~~
I morphed both low sens and high sens together, Best of both worlds , separate cabinets  but one   cohesive meshed soundstage.
Best of both designs. 
Could I be happy with only 1 single WBer,
Sure i could,
 Could  I be happy with a  single low sens speaker?
No never again.
 I could not, will not.
But both together, provided the low sens midwoofer is very well behaved. 
This is the caveat, the lone condition. 

I think Altec A7 sounds more like live music.

The holographic imaging through Lansche 4.1 may be exaggerated effect which can not be heard at live concert.

But audiophiles tend to enjoy such holographic imaging.

Altec A7 does sound much better than i expected.

I picked it up only three weeks ago.

It give effortless dynamics and nuanced bass with wide and deep soundstage.

Although Altec does not sound boxy, I could notice more holographic imaging through my modern speaker Lansche 4.1 which I had been using since 2006.

I am happy to have both.

I will play each depending on music and my mood.
Altec seems to work better with Jazz and rock music although it is not slouch with Classical music.

I do not have experience with the Altec or Lansche but generally prefer modern over vintage speakers for sound quality, looks and new/clean condition.

I’d never seen the A7 in black before. The ones we had in the lab used the larger 500 sectoral horn, were an industrial looking bluish green, and open at the bottom. I used one at home as a graduate student in the early 60s. It was great for the horns in Aida, a bit less so for voices.

@mozartfan Sounds good. Plenty of presence and detail. It's late and maybe I missed it but which pair were you playing? 

Great post. Wonderful sound and space. The Altecs sound huge but seem to have a boxy/shouty coloration.

https://youtu.be/n2xqnsno5ho

Altec A7 also give very nuanced vocal.

https://youtu.be/_PDvLa9Wsz8

Billie Jean after switching to CAD gc3 ground control .

Altec A7 rocks!

Some folks make the  claim , can't judgea  speaker via YT compression/+ computer cheapo speakers,,guess headphones  would be better,,,but anyway.
Honestly, both have MASSIVE SPL /Soundstage.
My rm is small and I listen at very near field at low/mid SPL, So neither would work for me. But to chime in a  answer, honestly I hear some over hang in the upper bass/low midrange, that notorious section where most speakers get all hung up.
I mean if you like huge GIGANTIC SPL,, soundstage, then yeah either one will work. 
Here give mine a  listen. 
Clean/clear, zero over hang /bloating in neither  upper bass nor low mid section
The upload cam is a cheap Sony, all I could afford.
So suffers from the cheap upload, But you get a  vague idea anyhoot

Be honest, if you don't like it, just say so.
ain't gonna hurt my feelings. 
Music starts at 1:25


https://www.youtube.com/watch?v=xcjYiZztHgM&t=1s

Hi Dan

it is nice to hear from you!

How is your health?

i am still living in the same house in Bow.

I am paying more attention to source and amplifiers.

By the way one of my tube amp need repair.

If you know nice person to take care of it nearby.

Please send me PM

best wishes

Thomas

Hello Shkong78,

Both pairs of speakers are great, but I tend to favor the Lansche pair. A bit more balanced, I feel.

At my current age, I don't get out much anymore, so hearing what I've just heard has been a bit of a shock for me. Although I love the sound of my custom built Tannoys, your Lansches and the A 7's have shown me what is lacking by my Tannoys.

A good part of it may be the quality provided by the equipment behind the two pair of speakers. Going back aways, I was intending to come visit you, but something came up, and I wasn't able to make it. I wish now that I had.

I kind of hope what I've just heard doesn't stick with me for very long, because it's an itch I can't really afford to scratch.

Hopefully for you, you're able to keep both pair of speakers, and enjoy both in turn.

Do you still live somewhat south of Bellingham?

Best regards,
Dan

Source is Cocktail Audio X50d music server

Dave and Mscaler Dac

LIne Magnetic 508 amp fitted with RCA 805, EML 300b, Melz 1578(6sn7), RCa 5691(6sl7)

I am also testing Nordost Qkore6 ground control that I picked yesterday for home audition.

Thomas