More speaker or more power

I like to have some sugesstions, Have Von Schweikerts VR-4jr's MK1, I running 120wpc ss,Primare amp,preamp very good sound, but when played very loud, as sometimes I do, Im running out of power with this system. Want a greater impact,small rm, long wall setup, Tweaked up, Have had prior, 801 series III,Krell Mono blocks in a bigger Rm Ocourse so I know what a track could sound Like, some help in suggestions, More speaker or more amp.Need greater SPL.....