Do you Think Altec model 19 is outdated speakers ?

Respectfully, you should not need the affirmation of others and you cannot expect others to be able to analyze SQ from a you tube video.  The recommendation is to ask yourself if the speakers sound compelling musical to you.  Many prefer the sound of horn loaded speakers.  Many need high sensitivity designs like horns based on their preference for the sound of low power tube amplification.  Many prefer vintage sound to modern detail and clarity.  There is no right or wrong.  
 

Responding directly, over the past 10 years speaker technology, including cabinet, crossover parts quality, and drivers have advanced significantly compared to the subject Altecs.  However, while I prefer the detail and clarity of these designs, they are not for everyone.  
 

My recommendation is to critically analyze you system compared to live acoustic music and set some goals for improving your system.  Then research journals to find brands that may meet you goal. Finally, audition and choose to keep the Altecs or spend for a new pair.  

@curlyhifi Thanks for your comments I've wide taste of music from opera to world music having spend over 45 years inside and outside of music industry, Having Met D,Garber (RIP) T.Mayer and many other  Genius  Audio designers they tuned their equipment by ear as an ex BBC Engineer  my ears are well trained and I  know  about room acoustics and well recorded music,WHEN listen music virtually I  invite musician into my room they do sing at to me ! if I  let you hear PUCCINI 's La Bohème  in my system You may think you are at the Royal Albert Hall . None of my system has been tweaked it is a simple SET Amps and iconic loudspeakers what I  share with Audiogon community has been rather amusing. Some members could not even recognized Stacey Kent voice!  I listen music Approx 60 hours a Week so please stop patronizing me how to listen music. have fun and enjoy whatever you do.

@jsalerno277  respectfully I  was  not asking affirmation from Agon community I  was only giving bit of flavor what an iconic speakers can do well tuned room and a good marriage with associated equipment and yet recorded by 5 years old  mobile phone. As for the  speaker technology I  do not think advanced dramatically a part from cosmetics excellent furniture finish to keep wives or spouses  Happy. from Walker's outstanding quad 57 to Tannoys still going nearly hundred years to Magnificent rather partner unfriendly Irreplaceable Great American ALTEC 's thanks GPA  to keeping it going ,thanks for your advice One can enter my music room can not get out once they hear the music playing. Have fun 

, enjoy what ever you do. 

Excellent.  You responded indirectly and positively to my question of point.  Your Altecs are musically compelling to you.  That is what is critical and the opinions of others does not matter.  
 

Regarding cabinet design, it has advanced substantially from an engineering perspective with regard to materials, computer assisted shaping, and bracing all designed to remove internal frequency reflections, reinforcements, and cancellations.  Speaker finishes for some companies are as important to SQ, others not, so generalization that the art of cabinetmaking was better in the past cannot be taken as an axiom.  
 

So I am glad you find your system musically compelling and I do not understand the purpose of your post, including the YouTube stream. 
 

Nice and clear.

A bit boxy and the peaks in the highs would have to go, at least for me.  Seems to be adding a bit of sibilance.