I have same said 500/1 v2. And 2 13 w6v2 in a ported n tuned box. I had settings wrong a now one sub is damaged but works. I have a bass knob but uses aux cord not the one that came with amp, where should settings be at.
praise the lord.... I have my 500/1 19 years now bro and push her everyday money well spent. And yeah it's an angry lil amp I run extra alternator gel cell battery and a 5f cap plenty of power 0gauge on 100amp fuse in my suburban with two jl w612w6v2.... Jl 4 life.