Morrison 1.8 speaker. Anybody knows how to connect them to the amp ?

Hi

I just got a pair of Morrison 1.8 omni directional speakers.

As I bought them from outside, one of my friends delivered them to me.
Speakers have mirror pair 5 binding posts.

How to connect them in standard mode (not biamp)

I tried to connect them as I thought but My Mark Levinson ML-9 amp went in protection mode.  It didn't like that.