Presonus R80 V2, Active Studio Monitor, 2-Way monitor with Air Motion ribbon tweeter, 8"" Woofer made of composite fabric, Tweeter with ultra-thin Kapton diaphragm (<0.01 mm), Tweeter area: 4.4 cm2, Frequency response: 40 - 22000 Hz, Crossover frequency: 2.6 kHz, Input sensitivity infinitely variable via a gain potentiometer, Treble adjustment: +/- 6 dB shelf @ 10 kHz, Midrange adjustment: +/- 6 dB @ 1 kHz, A switchable high-pass filter (linear/80 Hz/100 Hz), An acoustic space switch for bass correction (linear/-2 dB/-4 dB), 75/65 Watt Class D power amplifiers (LF/HF), Limiting sound pressure level: 107 dB @ 1 m, Inputs: XLR (balanced), 6.3 mm jack (balanced), RCA (unbalanced), Input impedance: 20 kOhm (balanced), 10 kOhm (unbalanced), Shielded against RF interference, on/off delay, output current limiter, overheating, transient and subsonic protection circuitry, Energy-saving auto-standby mode, Dimensions (W x D x H): 241 x 309 x 379 mm, Weight: 9 kg