vintage versus modern speakers


Since I have had so many excellent insights and answers to my question, here is the second chapter of my "free" education: are great vintage speakers (Infiniti, JBL,Sansui, Sony, etc..) from the seventies better sounding than what is available now? the X factor in that equation is the cost, since my speaker budget is only 1500$ for two speakers.

Ladies and Gentlemen, your advice will be read and taken into consideration.
Thank you.
rockanroller
Raymonda nailed it when he said
generally one can spend less today and get much better sound per dollar than yesterday.
IMO, partly as a result of what Timlub said:
Material technology... we now have Kevlar, carbon fiber, magnesium, aluminum, ceramic, pulp wood fiber cones & yada yada yada... This has changed along with a much improved manufacturing process. We used to have measure 50 drivers to match up a half dozen to tight tolerances. Today, they come off the line within 5% or better tolerances... Combine that with better caps & resisters along with compensation circuitry not typically used back then
to which I would also add:
computer modeling which cuts R&D costs substantially, and
lower cost manufacturing sourced from third world countries.

At the other end of the cost spectrum are the high 5 to mid 6 figure speaker systems which would have been beyond anyone's wildest imaginations "back in the day".
I really like the sound of many of my 60's and early 70's LPs like Jeff Beck's "Truth" and Tull's "Stand up"...some of this stuff sounds really cool on modern gear...Donovan's stuff with John Bonham et al...kick ass.
One issue with speakers made in the 3rd world country manufacturing: made by people for whom it is just a job, not by crafstmen. Therefore, I will only buy American made speakers.
Two, in regards to the quality of records in the seventies, here is the perfect quote: "Actually many of these so called poorly recorded rock albums you mention of yesteryear sound much better than the poorly engineered and compressed rock and pop albums put out today" by Raymonda!
Because , personally, I think that today pop/mainstream music is well represented by the Ipod: immensely repetitive monotony, absence of musicians, cheaply technically done....
So I will follow Almarg suggestions, to look for a set of speakers, but I will also look at some great classics: Infinity, JBL,EPI . To be followed......
At your price point most of the newer and better audiophile oriented loudspeakers won't play that loudly, nor will they have that much bass. They also won't match very well with your amp. A double Advent system with refurbished drivers and crossovers can be had for $500-600 and can do things that the audiophile loudspeakers can't.
In the under $1500 price range, there are not many speakers from the 1970's and 1980's that would be worth considering; vintage models from that era that are still worth considering have actually become more expensive than their original price (e.g., 15 ohm Rogers). While some of the higher end speakers from that era might have depreciated in value enough to be a bargain, it will take some experience to identify such bargains and know whether age has not cause major deterioration (the material used on many speakers from that time period for the soft rubber surround on the drivers can turn into dust by this time).

What is amazing is that MUCH older vintage speakers at WAY above that price range are a completely different matter. There are many drivers from the late 1920's throught the 1950's that, can be turned into fantastic systems. The problem here is that many such systems are impractically large in size (the speakers were originally meant for theaters), and because their superiority is no secret, such drivers are VERY expensive. The compression/horn drivers I am talking about are made by the likes of Western Electric, IPC and RCA. If you have a chance listen to modern horn systems built around such drivers (they DO NOT sound like Klipschorns or Altec Valencias and the like). There are modern companies making very good horn drivers, such as ALES, but some of these are even more expensive than the vintage classics.