amplifier imbalance

[Bushbaby]

I've now got my system up and running with the old Mission 770s speakers which have had the crossover modified for the changes to the bass drivers and tweeters. Wow, these sound amazing and I am pleased to say that drum kit cymbals are reproduced extremely well. The system is well balanced and very neutral. There is the odd crack that I hear very infrequently from the speakers so could this be a connection issue somewhere??

The bad news is that they are huge speakers and being old and knocked about, the speaker veneers need to be cleaned up/marks removed/polished. I am now thinking that they are too big for such a small room.

Best Regards

Rob