glockenklangheartrock

Hey all, I just managed to get hold of a bargain Vanderkley 410LNT (4ohms) to pair with my 210LNT (8 ohms), powered by my Glock Heart Rock II (putting out the full 1000 watts @ 2.67 ohms). Although it also sounded great when I had a 4 ohm 210LNT paired with the 8 ohm 210LNT, something bothered...