A.The AC-60's SUB WOOFER OUT jack is designed for use with a powered sub woofer (such as the Roland KCW-1).
It's possible to connect the SUB WOOFER OUT jack to a bass amp. However, since the bass amp's input specifications and tonal characteristics are optimized for amplifying a bass guitar, you may or may not find the tonal results to be satisfactory.
(2005/11/22)