I have just bought accoustic energy aego p2 to use as my rears and have a couple of questions. The terminal only accepts a phono plug type arrangement i.e. it has no +/- terminals. Of course, the speaker cable provided is too short and anyway I have already had cable hidden in my walls from when I had my room re-plastered. Can I simply shove both + and cable into the phono socket? Also, the speakers do not have a high pass filter protection will I blow them up if I connect them directly to my Marantz 5300? According to the blurb they should be run from the output on the sub but I dont want to do this? Will they be OK at moderate levels?