Hi, folks! So, I decided to renew my setup due to some overheating, and the results are Lanzar's AS 6.1 components at front and Alpine SPR 694a type R at rear (components), feeded by a Flex 356 from Alpine (it has now 6 x 12-volt fans to cool it). Now comes the doubts: The speakers that were overheating the amp are Proaudio 4 way 350W each (I know, nobody knows it), and I'm building 2 corner boxes to use them as subs, but should I use the sub channel on the alpine to feed them (Parallel or series?), or shoulod I instead use a (available for now) 400W 2-bridgeable channels Futura FA-1051 amp to feed the proaudio (series or parallel wiring?)? Thanks in Advance!