I was looking at a small (about a 12 inch cube) of an amp in a music shop the other day. I cost £350/$577, and rated at 80 watts rms. It was *not* a bass amp but what interested me was the speaker. It looked to be about only 6 inch diam. which is pretty small for that power. They also had some speakers to be fitted in cars - one was 400W and only 12 inches diam. When no one was looking I had a gentle feel of the cone - it felt very "plastic like". I guess some modern material was used to make it - maybe a mylar type material? Anyway, I was wondering if it would be possible/practical/sensible to retro fit one of these modern high-power speakers in a older bass amp - like my TE 300W combo? (assuming impedance matching is sorted out of course) There are a few reasons I ask; 1) the TE is one weighty beast and while is a fabulous amp, I wish it was lighter to carry about and as most of the weight is the speaker... 2) Would there be any improvement in performance - from a sound point of view? I know the TE purists won't like this idea, but I prefer to be practical if possible. And, in any case *if* I did this, I'd mount the new speaker on a removable baffle board so the original speaker could easily be restored to the combo. Be interested in you speaker experts thoughts/info on any of the above - especially info about what these new speakers are made of - and are they any good?