Extreme Sub (ES08)




  • 500 watts of peak (250w RMS) power output with variable bass gain and adjustable low pass crossover
  • Frequency range 20 Hz to 275 Hz
  • Marine-grade speakers in IP66 Patent Pending enclosure providing 100% waterproof, dirt proof and dustproof audio
  • Wireless Audio Connection – wirelessly connect to ECOXGEAR soundbars/speakers with ECOCAST
  • Wired Audio Connection – connect to any soundbar, amplifier, or stereo’s aux out or sub output jacks
  • Auto power on modes – remote (blue wire), audio or DC
  • Wired Remote Gain Switch – quickly adjust the sub volume on the fly.
  • Multi-Color LED Backlit Speakers – solid green, red, white, blue, or music sync, fading or off.
  • Mounting brackets and integrated threaded mounting holes for multiple mounting configuration options
  • 1 year warranty on parts and labor.
  • Protected under patent US 9,307,307 , 11,223,886 , D937244

Size & Weight

  • Width: 13.9”
  • depth: 9.1”
  • Height: 8.9”
  • Weight: 20 lbs.

What’s in the Box

  • 6.6 Power Cable for Connecting to Vehicle 12V step down converter or Battery
  • Auxiliary power out mating connector
  • Vertical and horizontal Mounting Brackets
  • all related Mounting Hardware Included
  • Wired Remote Gain Knob with 10 foot cable


  • Input Voltage: 12VDC, 30A (requires connection to external DC battery for power)