sub: 2 x infinity kappa perfect 12.1D 2x orion 600d
any suggestion is welcome I buy from indoAudioElectronics on ebay beacouse i am from italy and i find all of this here. My budget are limited to this set.
why don't you sell the soundstream and get another orion...seems like the orions are having a threesome and the tarantula is just hanging out by itself...get another orion to match since you already have 3 of them...much better looking install.
for DD/DTS you want equal power to center, fronts, and surround/rear effects. consider the a/d/s 6 channel amplifier as an all in one solution for the components, and use a second amp for the subs. you'd have a total of 9 amplification channels so you could basically drive center, fronts, rears, and subs from one amp, or even bridge any combination of channel pairs you wanted for added power to different channels.