I currently have a 6 zone speaker distribution system in my house that is fed from my pioneer Elite VSX-21TXH receiver in my cinema. I would love to put 4 speakers on one of these zones that feeds my outside deck. The 2 existing speakers on that zone are 8 ohm Boston Acoustics. What performance change can I expect if I add 2 identical speakers to this zone? My volume on the existing speakers is just right when I'm at full volume level on the zone. Thanks for your help.
