Presonus Eris Studio 4

Features: 

• 4.5" woven composite low-frequency driver
• 1" ultralow mass, silk-dome, high-frequency driver
• Crossover Frequency, 3.5 kHz
• 100 x 60° EBM waveguide provides a sweet spot
• Front-firing acoustic port for superior bass-frequency reproduction and optimized, resonance-suppressing internal bracing
• 50W, Class AB dual amplification
• 55 Hz to 20 kHz frequency response
• 99 dB Peak SPL (at 1 m)
• Acoustic Tuning Controls:Acoustic Space (Flat, -2 dB, -4 dB)
• High Frequency (±6 dB, center 10 kHz, continuously variable)
• Mid Frequency (±6 dB, center 1 kHz, continuously variable)
• Low Cut (Flat, 80 Hz, 100 Hz @ -12 dB / octave)
• Inputs:XLR and 1/4-inch TRS balanced rear-panel inputs
• RCA unbalanced rear-panel inputs
• Protection:RF interference
• Output-current limiting
• Over-temperature
• Turn-on/off transient
• Subsonic filter
• Power Saver mode (engages after 40 minutes)

Specs: 

• Protections
  RF interference
  Output-current limiting
  Over-temperature
  Turn-on/off transient
  Subsonic filter
• Audio Switches
  Acoustic Space (Flat, -2 dB, -4 dB)Low Cut (Flat, 80 Hz, 100 Hz @ -12 dB / octave)
• Audio Controls
  VolumeHigh Frequency (±6 dB, center 10 kHz, continuously variable)Mid Frequency (±6 dB, center 1 kHz, continuously variable)
• Peak SPL
  99 dB (@ 1 meter)
• Crossover Frequency
  2.7 kHz
• Monitor Inputs
  1- Balanced XLR, 1- Balanced ¼” TRS, 1- Unbalanced RCA
• HF Transducers
  1” Ultra Low Mass, Silk Dome Tweeter
• LF Transducers
  4.5" Woven Composite
• Frequency Response
  55 Hz - 20 kHz
• Input Impedance
  10 kΩ
• Monitor Amplifier Power
  25 Watts (Each Speaker)