speaker capacitors-----leave alone or does it open pandora's box ?

Ah, yep. Try out the TruCopper Audyn's as bypass caps. :) Buy one or two pairs and try them out. I have had good luck with using aligator clips to tie them on without soldering first. 

Be warned, they are physically much larger than the red versions, so don't go crazy buying them until you have some idea of space available. :) 

Best,

E

@erik_squires 

there is plenty of space available.     

there are 3 red caps and 1 black one......if I was to change the red caps to the Audyn TruCopper.......what will that do to the overall sound ?

Try below listed link
Some good info on Cap's and there characteristic's / sonic qualities

Brad

http://www.humblehomemadehifi.com/Cap.html

OP:

The TruCopper are limited in values and very very expensive compared to the reds. If memory serves, they start around $20 for 0.1uF, that's pretty pricey. Building up say a 4 uF cap would run you around $120-$150 each. This is why I recommend you try them out as bypass caps to start. 

For far less, I'd recommend the Clarity CMR range, with Audyn 0.1uF bypass on values larger than 4-5 uF. 

Again, these are BIG parts. You best be prepared to wire them. :) 

It is a MUCH easier thing for a newbie to buy some bypass caps and listen. Cheaper too. 

Best,

Erik

BTW, the largest value cap is probably on the bass and a shunt. Do not replace electrolytic caps with foil unless you have measured the ESR. 

Usually best left alone in the woofer section unless you know what you are doing.