I am awaiting delivery of a Fane F70. I will be building a 112 cab to put it in. With this speaker, would you recommend open or closed back? Music - cleanish Beatles to modern hardish rock, say Foo Fighters, maybe QOTSA, some grunge, some Sabbath. Lots of classic ACDC type crunch... you get the picture. Amp: Homemade Marshall 18W kit (Ampmaker P1800). Power scaling and an extra gain stage. Lovely amp! So, would you go open or closed?