Powered 40 watt AV Monitor Speakers Great condition, versatile, heavy 40 watt powered punch! Features - 20-watt-per-channel amplifier with Class A/B architecture - 4" polypropylene-coated woofers for tight, accurate bass - 1" ferrofluid-cooled silk cone tweeters for clear, pristine highs - OptImage III tweeter wave guides for superior imaging and detail - Magnetic shielding for use near computer video monitors - Back-panel 1/4" TRS balanced and RCA unbalanced inputs for connecting gaming systems, DJ gear, mixers, amplifiers, instruments, and more - Front-panel 1/8" stereo auxiliary input for connecting your laptop or desktop computer, MP3 player, or other audio sources - Front-panel 1/8" headphone output for connecting headphones - Front-panel volume control Specifications Type: Two-way desktop reference speaker Low-Frequency Driver: 4" diameter, polypropylene-coated, magnetically shielded with high-temperature voice coil High-Frequency Driver: 1" diameter, magnetically shielded silk cone tweeter Frequency Response: 85 Hz – 20 kHz Crossover Frequency: 2.7 kHz RMS SPL: 101.5 dB @ 1 meter Signal-To-Noise Ratio: > 90 dB (typical, A-weighted) Input Connectors: Left and right RCA line input, left and right 1/4" TRS input, and 1/8" aux input Polarity: Positive signal at "+" input produces outward low-frequency cone displacement Dynamic Power: 20 watts continuous, per channel into 4 Ω Input Impedance: 10 k Ω unbalanced, 20 k Ω balanced Input Sensitivity: 100 mV pink noise input produces 90 dBA output SPL at 1 meter with volume control at maximum Protection: RF interference, output current limiting, over temperature, turn on/off transient, subsonic filter indicator: blue power LED ring around volume knob on front panel Power Requirements: 100-120V/~50/60 Hz, 220-240V/~50/60 Hz; powered via attached 2-conductor line cord Cabinet: Vinyl-laminated MDF Dimensions: 8.75" (H) x 6" (W) x 7.25" (D) / 22.2 cm (H) x 15.2 cm (W) x 18.4" (D) Weight: 14 lbs. / 6.34 kg