If you amplify the power cable interference it will demand more power to produce it, which will cause more interference. Effectively your amp is probably getting like a sub 1v signal and that's not too far away from what you can get from interference from a close power cable. Your signal is weak and that's dangerous.
Right now it's a good thing your amp gain doesn't go any higher because it would likely hit some distortion and peak all at once. Yes it will help with the bass volume, it will allow your amp to actually stretch its legs. If you want the closest thing you can get to good quality signal without replacing the head unit then 100 dollars is about the cheapest you can get unless you go used market. It's not a very good indicator to know whether your amp is pushing hard or not.
In sealed boxes, you'll usually see the cone push harder vs a ported box which will not be moving much especially when playing close to tuning freq. I usually stay away from prefab loaded enclosures as they are not my cup of tea and the specs are usually nowhere close to what they say.Īlso note that just because your sub isn't "moving" much doesn't necessarily mean it's not working hard. They are not a trustworthy company but I guess it does the job. I wouldn't be surprised if you gained like 3db just from swapping to a decent headunit. That stock radio is just a hindrance and causes more problems for you in achieving your desired results. That just tells you right there your signal source is the main culprit. Well if your signal is that weak that you barely have output at max gain, you should still be safe from any real damage (unless you start adding in bass boost, then there's a good chance you're distorting the signal which can eventually lead to damage).
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