Yes. It’s just as important to tune the resonant heads as it is to tune the batter heads. While the batter head controls the pitch and overall timbre of the drum, the bottom head controls how much it resonates. If the bottom head is out of tune, the resonating tone will have a harsh overtone to go with it, and that’s usually what people associate out-of-tune drums with. When the resonant head is tuned tightly, the drum will ring for much longer. It won’t ring as much when the bottom head isn’t tight. If you take that head off completely, you’ll get no resonance from the drum. Some drummers love that sound!