Tekton Double Impacts

@mac48025. You will want to mod the SEs as they will have the better drivers. I can assure you the crossover parts can be upgraded in the SE reflecting more of what I used.

Duelund would not be possible due to the crazy high cost. Remember the cap values are as high as 220uf, 68uf, and 10 or 12uf. Sure in the 1.5 uf cap on the center tweeter. A 12uf Duelund CAST cap costs $1300. A 40uf Duelund cap costs $3300. A custom 68uf and several combined caps to get you to 220uf would cost some $10,000 per speaker! Oh my! If you go this route have a master woodworker make you a great set of new cabs and outboard crossover boxes. Two inch thick front baffle and works!

No worries, great choices beyond Duelund here!  On values up to 15uf you can use the wonderful Jupiter copper foil or  Jupiter HT Aluminum foil caps in wax. On the large value caps I used Mundorf Evo Oil to make up the 220uf cap. The best sounding large value cap I know of is the Mundorf Supreme Evo Silver & Gold. It is expensive, but nothing like the cost of the Duelund. The stock SEs will not have parts of this quality. Also go with Path Audio resistors. All of these are too big for the cab and will placed externally. 

These parts are better sounding than the electroltyics or lower range Clarity film caps used in the stock and SE speakers. 

Dueland should be valued in bitcoin at those remarkable prices.

LOL! Agreed. Imagine also using Duelund inductors in the DIs! They are the best and very costly. Then wire it all up using the wonderful  Mundorf silver and gold wire placed in a silk and cotton sheathing.  Oh what a DIY fantasy dream! 

Thanks Jcarcopo and grannyring. As you can tell I'm a total novice to modding but I think I can handle it. 

Whoa, I had no idea Duelund caps cost so much. I think using Duelund wire will suffice for me.....along with Jupiter and Mundorf caps. Let my research begin. Thanks for the part suggestions and tips gentlemen. I'll experiment on my DI's first before modding the SE's. 

grannyring, after modding the DI's I know you have a more refined sound but one of the qualities of the DI's I wouldn't want to lose is their "liveliness"....that natural, live, realism they impart. Have your mods affected this quality of them?

No. They are more resolving. The electrolytic caps used in the DI are dark sounding. That is the sound quality of electrolytic caps. The parts I used opened up the speaker, made them more resolving, improved imaging, greater weight and body and most importantly......more natural sounding. The nervous or slightly ragged edges are gone and music is now flows with more focus, fidelity, and smoothly. Please do not take refined to mean dull and dark.

The Duelund wire is a lively wire full of life, but never too forward or bright. Also understand that better parts make a speaker more quiet....that is less noise. Great caps and resistors can reduce noise. Noise you don’t know is even there until you hear the difference. This is the refinement I am talking about.