bass speaker cabinet speaker: custom-designed Eminence speakerhorn: P-Audio PHT-410 material: Paulownia with Baltic birch front bafflefrequency response (-10 dB): 36 Hz - 15 kHz sensitivity: 100 dB SPL (at 1-metre, 1W)impedance: 4 Ohms power (RMS): 1000Wtweeter action frequency: 2 kHz