when you recone speakers you can't change the watts that is in the magnet and voice coil chamber. my 1979 evb215m cab still has the same drivers 400watt 15L's with the heat sink/vent on the magnet. not the oem 200 watt versions. as long as they do not dryrot they will last for 40 years easy. I might recone mine this year, I have 3 backups that I bought from ebay and reconed and they sound great.I have many cabs and this ev cab is the best I have ever heard, I run a warmoth jazz bass with lindy fraling pickups and a ampeg svt vr all tube head, di"addario nickle strings 105-50 and all monster cables. bass players all over the state of pennsylvania grow very envy when hearing me live. not bragging but my tone is awesome and have had a few people try to steal my rig and many more offer me thousands of dollars for it. now I did modify the crossover and attenuator in mine but still have all the original speakers, eminence 1.6 crossover and 50 watt attenuator. this thing is loud as hell and sounds sweet. if you hit it hard with attack from your fingers it's geddy lee from 78-80 all over again. rush tone for rock, modern counrty tone,and 70's funk all in one. if you see these cabs buy it right now they are very very rare.