Yamaha DTXpress/DTXplorer/DTXtreme

hi, my dtxpress is still being shipped to me, but i dont have a PA 
system or anyhting to hear it off of, i know there is a headfone jack 
but i weas wondering if i could plug it in to my crate bx-200 
(200watt!) bass amp. I got 2 differnt speakers i could uyse with it. 
an 18 inch cerwin vega speaker or a 14 inch crate speaker, i also got 
a small rage 158 guitar amp. (i htink thzat one is 15 watts) i was 
wondering if it would ruin either one of them, or which one may be 
the best setup. has any1 ever used a guitar or bass amp b4? any help 
would eb appreciated (u can email me at CQRNELIUS@... or post 
a message but id rather be emailed to) 

thank you,
Joseph Cornelius

-I am also goin to sell the rack that is coming with my dtxpress,im 
getting a new one that is the rs65 but the one i am selling is the 
rs60 rack. if any1 interested they can email me to.