So long story short I’m saving up for better subs so I’m reusing mtx 212dvs subs vented on an audio control lc1-800. On a stock unit with taco tunes speaker connectors into rca’s. So that amp was installed yesterday with new OFC 4 gauge wiring from knuconcepts. Before that amp. Set up I had a shitty boss amp that claimed 1200rms. The subs hit great on it. So I switched to the audio control yesterday and the subs hit harder n clearer for all of 20 minutes. Now my subs go in and out. N when they do hit it’s for 4 seconds. I reused the same ground (on the speaker shelf). Idk what is wrong. Could my ground be not great? I turned down the gain and retuned it. Same results. Neither fuse is blown on the amp. Could it be a bad ground making the subs go in and out?