Fostex PM0.4c The Fostex PM0.4c is a pair of active speakers with a 60 Hz to 20 kHz frequency response and a crossover frequency of 1.6 kHz. This pair of 2-way monitors are great for small studios and beginners who want a reliable pair of monitors to reference there mixes without headphones.Specifications Enclosure: 2way bass reflex Low range driver: 100 mm (4 inch) cone speaker High range driver: 19 mm (3/4 inch) soft dome tweeter Frequency characteristic: 60 Hz to 20 kHz Crossover frequency: 1.6 kHz Input terminal: RCA pin jack, 320 mV (input sensitivity) Input impedance: 10 kΩ or more Rated output: 30 W + 30 W Distortion factor (THD): Less than 0.05% (2 W output) Power (AC IN): 100 to 240 V 50/60 Hz Power consumption: 15 W (normal state), 0.5 W or less (standby state) External dimension (mm): 130 (width) × 220 (height) × 169 (depth) (not including protrusions) Weight: 2.4 kg (active speaker), 2.1 kg (passive speaker)