From what they show, it would appear that they are using sand cast resistors, and Solen caps. If so, I would think that some simple upgrades in the speaker's crossover parts might make it sound even better. I am not so sure that the coils are an issue, but you might want to alagator clip in some Alhpa coils just to see if there is an improvement using them. I'd certainly want to Change out the tweeter caps with AuriCaps, the woofer coil with an Alpha Core, and all the resistors with Mills, if not all the caps with AuriCaps, all the coils with Alpha Core, and all the resistors with Mills. OTOH I'd not destroy anything, in the process, sometimes inexpensive coils are used because they have higher resistance, to keep the rest of the circuit simpler, but I'd still have to try some upgrades becasue they could make a great speaker awesome, or an awesome speaker, more so.
Regards,
Lou