Presonus Eris 4.5 Studio Monitors

Components and construction 4.5-inch (E 4.5) 5.25-inch (E5) 8-inch (E8) Kevlar® low-frequency transducer 1-inch (25 mm), ultra-low-mass, silk-dome, high-frequency transducer Front-firing acoustic port for superior bass-frequency reproduction Optimized, resonance-suppressing internal bracing 100 dB (E4.5) 102 dB (E5) 105 dB (E8) maximum continuous SPL User controls HF Driver Adjust (±6 dB, continuously variable) Midrange Driver Adjust (±6 dB, continuously variable) Acoustic Space settings (flat, -2, -4 dB) for accurate mixing contour Highpass filter (Off, 80 Hz, 100 Hz) Power and safety 50 (E4.5) 70 (E5) 130 watt (E8), Class AB biamplification RF interference, output current limiting, over-temperature, transient, and subsonic protection Amplifier “soft start” feature eliminates popping on power-up Internal power supply with IEC connector Power switch with onoff LED Inputs and outputs Balanced ¼-inch and unbalanced RCA inputs (E5E8) Balanced ¼-inch TRS and unbalanced 18-inch TS, RCA inputs (E4.5) 18-inch stereo headphone output (E4.5)