JBL L300 - true myth?


I'd like to ask if some can write his opinion on this speakers,I had a chance to listen and recommened .
I understand they working great with powerfull tube amp...especially with Mcintosh -is that true?
it's look the components are really good Alnico drivers special tweeters,horns...but woofers made of carton?is that a problem with today standards?
Is the old fashion crossover need upgrade ?

Thanks
scubidubi
JBL L300 is Nelson Pass’s all time favorite speakers, he says. It must be really good. I would like to hear it.

And yet he designed an alternate crossover for it. The murky sounds and  poor in-room power response I heard out of stock L300s probably comes from a crossover that's not well-matched to the drivers, especially how high the crossover point is for a 15" woofer. Guaranteed beaming.
As a kid, it was always my dream to own a pair of L300’s. I would love to pick up a nice pair today. The smaller L110 and L65 were nice too.
I just picked up a pair of L300 and L200 at the bargain price from a local audiophile.  They were quite abused and damaged outside and inside as well.  But they look wonderful from at least 20 feet away.  I have listened to both L200's and L300's with a little Pilot tube amp. They sound fine but not the greatest I have heard so far.  They are not perfect. They have some strengths for certain areas and weaknesses for other areas, like our children. I will try to enjoy them while refinishing the cabinets and cleanup the mess inside. I have to live with them for a while to learn more about them. My first impression is that they have more strengths than weaknesses. I would like to enjoy their strengths more than their weaknesses.  At some point I am going to pass them on to someone else, so that they can experience what these are. Happy Listening!