The LCRs are rated at 90 db at 1 watt 4 ohms with power handling up to 300 watts. The 2150 is capable of 160 clean watts into 4 ohms. You had to be driving them beyond 112 db to damage them with the 2150. At that level you would also likely be damaged. A more powerful dedicated two channel amp isn't going to keep you from doing it again.
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Music system
Model 990/7500/Magnepan 1.6 QRs/Technics SL1200 MK2/Aperion S-12 Subwoofer/OWA3/Sony NS75H DVD
APC H15 Power Conditioner

TV System
Large Advent Loudspeakers/ Polk center/Monoprice surrounds/Panasonic Viera 42 inch/Onkyo HT-RC260/Sony BDP S590/Directv


Home Theater System
Onkyo PR-SC886/Outlaw 7125 Klipsch RF-82 L/R,RC-62 center, RB-35 SR/SL, BENQ HT1075, Outlaw LFM1-EX/OPPO BDP-83/Directv
Harmony ONE
Blue Jeans and Monoprice interconnects
APC H15 Power Conditioner