Tweak the knob for a wide range of tones: more attenuation affords a warmer tone, while less attenuation restores volume and brightness. The 16 ohm MaverickÃ¢ÂÂ¢ 12" guitar speaker with patent-pending FDMÃ¢ÂÂ¢ technology puts tonal control at your fingertips. Just turn the modulator knob to adjust speaker output and amplifier interaction, helping you find that sweet spot of saturated tube tone but at a significantly lower volume. The Eminence Maverick features a stamped steel frame, 38 oz. ceramic ferrite magnet, Zurette dustcap, and a full molded paper cone with paper edge.