If the OP is dead set on connecting his QS speakers with banana plugs he can order this, or a similar recessed speaker binding plate from Parts Express for use as a recessed wall plate...that's exactly what I did whenever I built our room thinking it would make for a much cleaner looking installation but whenever I started fumbling around with trying to connect the banana plug installed jumper wires to the QS8's with the less than ideal working space,(T bracket, wall and speaker) I was working with I ditched that idea and went bare wire to speaker binding post, it worked out great and after the install nobody noticed the difference.
If a soldered speaker wire/banana plug to speaker binding post is what he's looking for, remove the two recessed speaker plate's binding post and use the holes in the plate as a pass-thru for that connection ... you may need to enlarge the holes or make one hole.



Parts Express Speaker Plates


Rick
Our Room

smile