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I ran -4awg from the battery to a fused Dblock to (2) -8awg wiring to each of the amps. I have not tested the 300/4, but it is getting power, as is the E1400D.
The issues is: I am getting faint sound for the subs. They are barely even audible, and when I attempt to turn up the gain I'll get the red light flashing at me. I tried scuffing up the paint so there was a better ground, but it still isn't getting any better. The Subs are wired in series, so that they are each at an 8ohm stable load. this *should* equate to a 4ohm load on the amp, but I am still not getting any sound.
Any guesses as to what I should be looking at? I know my wiring is good, but I just can't figure out what to troubleshoot. Thoughts/guesses are welcome.