Fully Adjustable Guitar Tone with the Twist of Your Wrist!The Red Coat series Reignmaker from Eminence provides a tonal breakthrough with solid British voicing for guitarists everywhere. Featuring the completely analog FDM (Flux Density Modulation) Technology, the Reignmaker offers control of output level, associated distortion, and tonal balance via a simple control knob on the back of the speaker. So you can get the same tone and feel as a great sounding, high-powered, tube amp set at 11, but at lower volume levels.Eminence Reignmaker Features 12 inch, 100 watt, 8 ohm Speaker British Cone provides bright UK speaker voicing Revolutionary, all-analog FDM technology Easily adjust the modulator knob to find that sweet spot Sounds like a high-volume tube amp at lower volumes More attenuation offers a warmer tone; less restores volume and brightness Real attenuation without losing the feel of playing through a speaker No pedals or expensive electronicsSpecifications: Nominal Basket Diameter: 12", 304.8 mm Nominal Impedance: 8 ohms Power Rating: 75W Resonance: 91 Hz Usable Frequency Range: 80 Hz - 6.2 kHz Sensitivity: 91.5 dB (No knob turn), 100 dB (Full turn) Magnet Weight: 38 oz. Gap Height: 0.312", 7.92 mm Voice Coil Diameter: 1.75", 44.5 mmWith a twist of the rear control knob, this simple, affordable and revolutionary technology mechanically manipulates the flux path and relative densities within a loudspeaker motor structure. The result is a patent-pending innovation lending guitarists the ability to achieve high power amplifier tone at lower volumes simply with the turn of a dial on the back of the speaker.