low Bass

[Skullz]

The lower the frequency you go the more power you need to reach the same perceived loudness as a higher frequency setup is, Going lower is great for hairtricks if that is your goal, and if the goal is just getting louder, then you'll want to tune a bit higher from the 40hz to 60hz range. Tuning is something you'll have to experiment with to find your sweet spot.

[Jessica]

All the way up to 20,000hz, eh? Take the test and see how high you can really hear. I drop off at about 16k.

it varies person to person, could be your speakers too.