ive read that you can run 2 amp only if the amps have that feature(slave) so yes you can run to amps on 1 sub.now for the w7 running 2 1000/1 i think thats going to be t0o much for it considering the 1000/1 puts out 1000rms 11v-14v and the w7 can only handle 1000 rms even if you drive just alilttle bit more im sure the coils will start to heat up IMO but im still somewhat a noob id go with 2 500/1 that would be a great combo