I have spent the last two years trying to determine why my bass cuts out sometimes.
First, the setup. Big Three already done. Almost ZERO flickering even at night. Factory battery & factory 100AMP Alternator (2011 Toyota Camry). 0 gauge to a distribution block and 4 gauge to the JL 1000/1. AMP tuned w/ voltmeter for a 12w7 (54.7 volts to a 3ohm load).
Most of the time my bass cuts out at mid-volume or higher. In addition, sometimes it sounds like I lose signal. Most of the time if the car is sitting still, there are less issues, but if it gets really bad, even sitting still the music sounds less clean and both AMPS start cutting out when they shouldn't. I have checked, rechecked and even replaced all the wires (except the main power). Still, the issue eventually returns. It's gotten worse over time...as if something is deteriorating.
The other day, I took the car out for several hours and I had the bass hitting SO HARD. No problems at all from any speaker. Then yesterday, the problem was back. Last night I broke down and ordered a Mechman high-output alternator. Perhaps my alternator is going out? Today, I had the factory battery replaced and there was no improvement at all. The blue Low Volt light would kick on which JL says occurs when there isn't enough power. Even if I connect the amp directly to a new battery and new ground with fresh 4 gauge I still get the blue light and the amp cuts out.
After the battery did not improve things, I experimented with adding more ground, bypassing the distribution block, bypassing the fuse...still the issue continued. I have wiggled all the AMP cables while the issue was happening with no effect at all. I have even mounted the 1000/1 in various positions, also no effect. I have started to think that the issue could be in my new Pioneer head-unit (the source). Or could it be my Camry's charging system...