Jbl everest dd55000

I would not change drivers. In fact if you’re not going to do the crossover caps yourself, don’t bother replacing anything. They were made in the mid 90’s so no need for new capacitors yet. If you’re not enjoying the sound, sell them 

I’m pretty sure these are charged capacitor networks. Check the manual, maybe change batteries 

ditusa - Thanks for the info on the DD55000, I stand corrected. I just figured since the DD67000 were charged cap networks these may also be. Also, correction: These were made from mid 80's to 1989. In my opinion a couple external subwoofers would improve the sound of even these great speakers. You are missing quite a lot of sound below 25Hz. Have fun.