I have got a Boss multi channel 1000W amp which i wanna run 2 700W mutant Subs. I got another Boss amp 250W 2 channel amp to run the set of pioneer 300w 6*9's. I have run the two amps in series, with the 1000w amp first in the series. I only get audio out of the litte amp running 6*9's, nothing out of the other amp at all, power light is on and everything tho. Phono cables coming out of the sub woofer cable on my JVC head unit, And the other amp running off other phonos on back of head unit.