Hi Reb1208,
I remeber that sometime ago I did read a post on similar topic in AA mentioning the weakness of DV-50 and how it can be handled. When I faced the same problems myself later on, that post in AA (most likely yours, but i am not 100% sure) definitely arose in my mind and help a lot. Your contribution is well appreciated :)
Thank also for sharing the speaker cable trick with us. Unfortunatedly, I cannot be benefited from it as my amp (ML432) does not have biwiring binding post.