...do great speakers increase in value over time in the vintage market?


Hello to all...

I have a pair of JBL L25 "PRIMA" speakers, made 1972, case in 7/10 shape (not repainted), surrounds on woofers reformed several years ago, grill cloth replaced several years ago, includes JBL badges on speakers. Original 1972 price $169/ea. 

Recent searches of this speaker in the vintage market show prices 50% OR MORE than the origional issue price: ???

Is this that good a speaker design? - I have read comments saying it his/was one of the best speakers ever made by JBL (at that time?) - and I do luv their sound (which I now wonder if I've ever really heard them?) especially with well-recorded jazz and have the ability with little power to ROCK OUT!

(Would greatly appreciate any comments by those who have/had these over the years...)

DO GREAT SPEAKERS INCREASE IN VALUE OVER TIME, or do/should all depreciate in value...
insearchofprat
We're talking Kenwood KA-something or other 60 watt integrated, Technics SL-1700 with Stanton 681EEE, lamp cord and patch cords. Nothing back then even had detachable power cords so you can imagine. I was however dedicated enough to tin the ends of the lamp cord.  

I would go with a turntable and the smoothest amp I could find, turn the tweeter down a bit and enjoy.
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What color are these bad boys anyway? Mine were yellow with orange grills. They came in 4 or 5 colors. I was watching and got mine when they were marked way down. Plus mine were store demo. I said hey what about this nick on the grill? Bottom corner, barely visible, but good for another $25 off. Well you have to be careful with your paper route money, you know?
No they do not, Not at all, This is a  post CV19 world,, a  place in time, in which whatever you buy, (excluding houses of course) after payment,, = loss in value automatically. 
Its the CV19 epoch. 
lets say i adda   2nd speaker system the SEAS TRYM at $2K. 
I don't like it vs my SEAS Thors,,list it here/ebay,, best offer,,might fetch $1200,,if I am lucky. 
I have plans to buya  new cayin SC6 pre,,,if I don't like it , will sell at a  30-40% discount.
So answer to your Q is , no, buying anything new today, resale is at a  discount.
Actually no, that has nothing to do with his question. The degree to which you have misconstrued it is however hilariously impressive.