I find that my system seems to blare over a specified level depending on the cd played.
1) Depending on RT60 and how the reverberation decays - yes this will have an influence on how loud you can go. Our hearing is absolutely remarkable - we can stand extremely high transients from an acoustic drum set (typically 115 db SPL) as long as they are indeed transients (brief). The RMS or time average energy level may be quite low becuase the drum hits are brief.
2) A lot of rock music is compressed for crap consumer systems and so it sounds bad (loud) very easily because the RMS or averge energy level has been deliberately engineered to be very high. (This is almost ALWAYS done with drums...so you may not be able to stand a recording nearly as loud as you could comfortably stand SPL's from a real acoustic set) So for starters you need to avoid CD's that have the audio "squashed" or "compressed"
(which means ALMOST ALL modern pop/rock CD's...if you can find old 80's stuff it is generally much better than what is churned out today )
3) Most consumer systems compress quite badly above 100 db SPL - flattening transients and making the RMS energy higher - a dull blaring sound is what you typically get...distortion goes rapidly up....most owners think "WOW my stereo plays so very loud" but in fact it is not loud at all....it is all just distortion! (Assuming you need 10 db SPL "headroom" then you may need to consider pro drivers or horns if you want to go much above 100 db SPL on transients or much above 90 db SPL average or continuous listening level without the music starting to sound stressed/strained). Nevertheless you will be limted to good quality CD's without compression see 2) above.