Specifications: • Rated power output (% THD): 497 watts into 8 ohms, 950 watts into 4 ohms • Signal to noise ratio: 98 dB A-weighted • Efficiency: 86% • Input impedance: 12K ohms • Input sensitivity: 775 mV • Subsonic filter: -3 dB @ 18 Hz, Q= • Bass boost: +3 dB @ 25 Hz, Q= • High pass output: -3 dB @ 80 Hz, 12 dB/octave • Low pass adjustment: 30-200 Hz • Phase adjustment: 0°–180° • Parametric EQ frequency: 18–80 Hz • Bandwidth: – Q • Level: - dB to +6 dB • Dimensions: 17-1/2" W x 4" H x 13" D (tabletop configuration) • Power requirements: 120/230 VAC, 60/50 Hz • Stand-by power rating: 120V 24W; 230V • Weight: 28 lbs. • Power rating based on one-third power duty cycle.
The sum of two counter-propagating waves (of equal amplitude and frequency) creates a standing wave . Standing waves commonly arise when a boundary blocks further propagation of the wave, thus causing wave reflection, and therefore introducing a counter-propagating wave. For example, when a violin string is displaced, transverse waves propagate out to where the string is held in place at the bridge and the nut , where the waves are reflected back. At the bridge and nut, the two opposed waves are in antiphase and cancel each other, producing a node . Halfway between two nodes there is an antinode , where the two counter-propagating waves enhance each other maximally. There is no net propagation of energy over time.