JBL subwoofer, can i replace the amp and driver? effectively??

faster100
faster100 Posts: 6,124
edited October 2002 in Speakers
Ok i have a older JBL psw 1200 its a big subwoofer enclosure 21" tall and 13 1/2" wide and 17" deep with a 12" driver and 120 watt rms amp, i really like the sub and have had it for 6 years, seems i have to have the gain almost all the way up, it looks like new but maybe worn out on the amp, can i upgrade the amp and the driver? Ok i know i can do this, But will it sound good or do i have things to figure when dealing with a subwoofer as i know speakers are tuned to specific speakers and placement and all that. SO can this be done with good results? The enclosure is really built nice and heavy also not like some of the cheap JBL speakers currently being sold. Thanks
MY HT RIG:
Sherwood p-965
Sherwood sd871 dvd
Rotel 1075 amp x5
LSI15 mains
LsiC center
LSIfx surround backs
Lsi7 side surrounds
SVS pb12/plus2


2 Channel Rig:

nad 1020 Pre-amp
Rotel 1080 stereo amp
Polk sda 2B
kenwood grunt Tuner
realistic lab 450 TT
Signal cable IC