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

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. 

How does one select values for a bypass capacitor ?

Good info Eric

Thnx
Brad