Do you Think Altec model 19 is outdated speakers ?

Until it gives up the ghost it is not outdated. Yes there may be better horn implementations but you have a working speaker set so no need

@jasonbourne71, my question was is Altec 19 are outdated ? check it out on you tube.  https://youtu.be/eUDF25oZGf8

NO! It is an updated version of the old Valencia with improved woofer and compression driver/horn. High sensitivity so capable of use with low-power amps.