One of the first systems I ever had was Orion cobalt in 1993 I think. After my Sherwood 240 was stolen and I blew a Coustic 360 I had 2 cobalt 12's, infinity kappa mids and highs all running off of one cobalt 430. 2 channels bridged at 2ohms for the subs and the other two stereo at 2ohms for the mids. That system rocked. Soon after I added the cobalt 2100. Bulletproof amps IMO. Ahh nostalgia.