wallflower: By this description do you mean to imply that regardless of electronics the Jubilees sounded the same? If so, that would seem quite odd. I've heard a lot high quality amps and while many sounded excellent, they all provided some type of different sonic characteristic. Please explain.
I don't pretend to speak for Gil but in my experience, I have yet to hear a significant "amp to amp" change that was as large of a difference as my "Klipschorn to Jubilee" change.
In my experience, I'd try to draw a parallel of getting a nice hamburger at some burger place verses going to a nice steakhouse and ordering a filet OR their NY strip. I'd think it reasonable that there is a larger jump from the burger to the steakhouse (Heritage to Jubilee), than there might be between the two offerings from the steakhouse? (different amps of high quality)
For my listening, the biggest jump/change in sound that I've heard in my room was putting the Jubilees in there. The next biggest jump/change I've experienced is when fiddling with the crossover settings, going from a 24 db slope crossover to an approximate 48 db slope crossover and even at that, with the steeper slope tweeks, I could ONLY tell a difference in sound when listening to female vocals which ironically, also happened to be Bonnie Raitt. When listening to instruments only, I personally can't tell a difference between either slope
The amps I've run through my Jubilees right now have been a McIntosh 2102 powering the top horn (several solid states on bottom) and I'm currently using a 4 channel solid state amp to run both speakers with my tube preamp (Peach) and my tube power amp (2012) OUT of the food chain. I personally find the changes of those amps to NOT be as significant of a difference as swapping out the speakers themselves. Truth be told, I can't sit here and tell you ANY differences I've heard (not to say that maybe you or someone else couldn't detect changes) but "my ears, my stuff, my room..." I'd have to agree with Gil in that there is essentially no (or very minimal) change. Some refuse to believe that and that's ok. Again, this isn't to say that a critical listener might not feel there is a different "ting" with something, but I'd liken that to the wine taster dude who says the film on the glass of wine as he swirles it is 'slightly thicker bodied and longer lasting' than the other glass of wine... BOTH have the swirl and he's making a judgement from one to the other. To sit there and have issues as to the thickenss of the swirles on the glass of wine.... well.... that tells me that person is doing ok with other things in life to have the time to worry about those exceedingly small differences that others, may not see (or may not be there).
Heck... 2 years ago when people heard the single Jubilee in the corner (the trip to Hope that induced Mike & I to buy them), everyone was mouth watering at how they sounded... well... we auditioned them with some QSC or Crown amps (I think), AND as I understand it, something like a $75 Emerson CD player that simply can't be accused of being "audiophile" yet it left everyone that I'm aware of, walking out of that room just shaking their head, impressed with what they heard.
Hearing is believing... if you're ever near Knoxville.....
Professor Thump told me to take a Custom 3 and stick it in my ear. I did...and it sounded great!!!