I've got a 500/1v2 amp and a HO110R-W7. Music was playing somewhat loudly for 30mins+ on a warm afternoon and I had the bass knob up all the way. The sub just cut out (thermal light didn't come on) and after about 10-15mins it started thumping again. Is the sub too much for the amp to handle? Is an upgrade necessary? Questions, comments, concerns? Thanks.