Well, I made banana jack panels on pieces of 3/8 birch board when I first opened the 4341s up - but I didn't think in terms of dual connectors so didn't use any specific dimension for jack placement. But maybe I should get some of those dual pair input plates like you have - or remake the rear panels I already have. I'll need to do something similar on the L200s as well - but - the amps have standard connectors spacing at least!
Yes - I bought 2 of the Walmart 40 footers - so I think 4 20" cables should cover my needs downstairs!
And thanks for the PE tip - I just ordered 5 of the dual terminal cups - 2 for the 4341s, and 3 for the L200s (including the eventual center one I'll set up)