hmm thats interesting since I did not connect like that.
I connected :
i) my receiver's "speaker a" output to mini's bottom posts,
ii) my receiver's "speaker b" output to mini's high level input (first row),
iii) and jump connected mini's left channel high level input and output (second row to forth row).
As a final step, I selected "large" front speakers and enabled speakers a and b on the receiver.
Here is a photo:

Danny, would you please verify it is OK.
Best regards.