Will this hurt anything?

I have done something here that many have looked at me with a lost look and asked WHY WOULD YOU DO THAT? Here is what I have got and what I've done with it. An 8wpc Tube amp that began it's life as a Dyna st70, to a McIntosh MX130 processor, bi amped with an Adcom 5 channel for HT, an Esoteric CDZ 500. To what began their life as Snell Acoustic E III's. The Snells needed the drivers re-coned after many years and a front tweeter was replaced at the same time. I was still not happy with the sound and wanted to try some horn tweeters because of the lack of top end and some hearing loss. Bought some 8olm 10x4" horns of no name on ebay as an experiment just to see what would happen. Hooked them directly into the bi wire inputs not being used. Made stands for them so they are not sitting directly on top of the Snells. The sound difference was incredible! As if a veil had been lifted from all of the music I had been listening to. Everything from Morphine to Miles/ Train /Evans Beatles and all points beyond. There is such a drastic difference my wife doesn't even want to hear them anymore without the horns! Admittedly neither do I. The Snells still have the rear firing tweeters in tact and working as well as the front tweeters and the new horns. I never thought such an inexpensive change would make such a difference, but I am concerned that although they sound so much better, I might be doing some unknown [to me] damage to some other part of the system such as the Mac or am I trying to drive the ST70ish amp too hard. There are some infrequent moments when I do hear what I think might be a voice crackle But with Bob Dylan it's hard to tell what is him and what is the stereo. And although Joni Mitchell is getting on in her age I can't tell there either. Any suggestions?