Eminence Patriot Maverick 12" Guitar Speaker 8 Ohm The Maverick 12" guitar speaker with patent-pending FDM 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. Tweak the knob for a wide range of tones: more attenuation affords a warmer tone, while less attenuation restores volume and brightness. The Eminence Maverick features a stamped steel frame, 38 ounce ceramic ferrite magnet, Zurette dust cap, and a full molded paper cone with paper edge.