I just got a used Sonor Players kit and am having a difficult time getting a good, thumpy bass sound from the 20"x12" kick and a hard felt beater. The batter is an Aquarian Super Kick III and the reso is a stock ported head with a thin plastic dampening ring. I get a "thump" with a bit of sustain, but it just sounds weak and I want something I can hammer for blues and rock. I used to have a cheap 20"x16" Mapex bass drum with basic heads+pillow and was happy enough with the sound. So I don't know if my problem is the drum's shallowness or the heads. Any suggestions @larryace or @newoldie? You mentioned being happy with this kick drum in previous posts.