Thanks for the comments, Jeff. Regarding the crossovers....have you ever heard of improving vintage speakers by redesigning/upgrading the crossovers? The reason I ask, is that for my speakers, the JBL L100t, many JBL fans have mentioned that the next model, L100T3, had better crossovers; the drivers were exactly the same and cabinet only had some structural supports added, but the 'sound was smoother and far more dynamic.' If so, then the improved quality appeared to result from the new crossovers, (there is a physical difference when comparing photos of both). So I'm wondering if its common to upgrade vintage crossovers as another option or is it best to stick with an OEM refurbish? Many thanks.