Conjure the power, detail, and emotion of the music experience in your home theater with the walnut Reference Series RF-7 III 2-Way Speaker. Featuring a 1.75" titanium diaphragm compression driver paired with an 8.5" 90 x 90° Tractrix horn and two 10" Cerametallic cone woofers, frequency response of 32 Hz to 25 kHz.