Hi! I've recently got a pair of P45. They were in good shape. Apart from cleaning and swapping electrolytic capacitors, there wasn't much to worry about. Well, the cloth grills were pretty dirty so I re-grilled them with a very thing and black cloth and now they look fantastic. The issue with them is, how do I mount them on the wall? They have two couple of triangle-shaped holes at the back (up & middle), and then two other holes at the bottom. Do I need a bracket or something? I want to mount them horizontally, but I don't know how to mount them vertically neither. Cheers!