I’ll tell you the craziest thing about these speakers is with my 2a3 amp that puts out 4 watts I’m getting spl levels around 95db peaks with the volume knob at 1 o’clock. Another thing people don’t realize is how low these can play. I’m getting good output at 30hz without the subs. I have the ob subs crossed over around 30-40 I think (can’t really tell with the Rythmik plate amps). Just kept adjusting it till I thought it sounded best.