For shits and giggles I hooked up my old bandpass system with two 12" Pioneer somethin or others (not the IMPP ones) with the Pioneer amp, dun even remember the real specs. Anywhoo, turned the NF lvl down to -1 and and took a listen and they actually sound half way decent and are accurate, for the most part, on a lot of songs. Good for me, makes me in less of a hurry to buy an expensive *** amp for my Ti:veryhapp: