Hi!

I'm not too familiar with impendances and I'm trying to add a monitor speaker to my amp. As mentioned in the title, I'm using Marshall DSL40C combo, and in order to send my signal to my drummer on gigs I need to connect it to an active speaker (Behringer B12D - 8ohms). Currently I have stock speaker in the amp (70/80, 16ohms) but I'm thinking of replacing it with something different.

My question is - what would be the optimal combination (ohm wise) that would work without any danger to the amp? Can I put in the amp 8ohm speaker (amp speaker) in the first 8ohm output and the Behringer monitor on the other, or do I have to use 16ohm speaker (and what output is better to put it in) with the active monitor (changing the monitor is not an option unfortunately)?

Hope I didn't complicate the question too much!

Thanks!