Other than a change in the Caps to Jantzen, all parts are stock. Disappointing as this IS a high end speaker. Comparing to other speakers, it's the highs that set these guys apart. They are just short of greatness and perhaps the remaining "cheap Parts" keep them from being so.
Since this is your design, can you recommended exactly what should be there? 
I'd be using Sonicaps in the tweeter and mid-range circuit. I'd be using Erse XQ inductors on the mid and tweeter too. That will give big improvements alone.
The wiring looks like Silver coated Copper and some of it has Black jacketing (not good). I'd replace all the wiring with solid core high purity Copper in polyethylene (I stock this wire). Also the woofer circuit uses four of those woofers and need a larger wire gauge. I'd use two runs of 16 gauge per leg for those woofers and twist the wire into a 4 wire braid to cancel out noise, especially for as long as the runs are. See example:
It wouldn't hurt to twist or braid the tweeter and mid wiring as well.
I'd also replace the lugs on the back of the speaker with tube connectors. Getting those lug bolts out of the signal path will be a considerable improvement.
I'd leave the Platinum by-pass caps in the tweeter circuit and all of the parts in the woofer circuit, but I would by-pass the cap in the woofer circuit with a .1uF Gen.2 Sonicap.
I'd also make sure that the speaker is completely lined wit No Rez. That would also be a big improvement in the bass response and lower vocals.
All of that should take clarity levels up several notches. It should get more cohesive and allow the drivers to not sound as much like individual drivers but more of a continuous and harmonious blend. Imaging and sound stage placement will come up a level. Highs will have a more natural sound. Bass response will be cleaner as well. Across the board it will be a different speaker really.
