Topmusicanswers
What dB should sub-bass be at?
Subbass should be peaking at -12dB, so you keep enough headroom for the rest of the song. If mixing with headroom is not working for you, a general rule of thumb is to keep the subbass lower than the kickdrum by about 2 to 5 dB.
What key is best for sub-bass?
Key is important
G is, for me personally, the best key to write in for good sub-bass, but generally anything from F to A works well. C is a particularly difficult key to produce sub-bass in, but as always there are exceptions to the rule.
Are sub basses necessary?
Sub bass is the stuff that's felt more than heard. It's an important part of a mix because it contributes to so much of the power listeners feel. In some genres sub bass a leading part of a mix, and in others it plays a supporting role.
