subwoofer and bose

[Bryan Foster]

Has anyone successfully installed an aftermarket, self-powered sub with the
bose system?  I guess you would have to use speaker level inputs to the
sub and I know there is an ohms issue.  If the bose system runs on lower
ohms than a typical system, can you just add a resistor in series
(resistance adds in series) to get the system up to the usual 8 ohms?

Thanks,
Bryan Foster