Earthquake CP-8 Subwoofer



Is there a more apropos name for a manufacturer of subwoofers than Earthquake? True, they now make a fine line of speakers and their power amplifiers have won many awards, but their real claim to fame has always been their subs. During my recent trip to CEDIA last fall, I had the pleasure of meeting with Abraham Sahyoun, Earthquake's marketing director. He encouraged me to attempt to lift the Super Nova Subwoofer off its display pedestal…he grinned while I attempted and failed…and then told me that it weighed in excess of 300 pounds.

The point he was making is that Earthquake constructs all their subs with quality, care and performance as their fundamental design goals. Earthquake is serious about bass! He then demonstrated the sub with a 14Hz test tone passing through it. It was barely audible to the human ear, but the cone was moving with a greater than 3 inch excursion that could be felt. As I recall, he explained that a 1 pound weight was applied to the inside of the diaphragm to assist control of the excursion and keep it from flying apart. From my observation, the Super Nova worked just fine while it massaged my insides with its powerful bass. It had me grinning like a Cheshire Cat.

He then introduced to me a new sub that, at that time, was not released to the public; the CP-8. With dimensions measuring at 7" H x 12" W x 25" D, it was certainly one of the most diminutive subs Earthquake has produced. With only an 8 in. driver, what was the point? When he said that the CP stood for "couch potato", I thought that perhaps he was kidding. Such was not the case. This sub is labeled as a "special applications" subwoofer. The sub was designed to literally be placed under or behind your seating area, whether couch, chair or bed. The benefits of such a placement will be revealed in this review.


  • Design: Powered Subwoofer, Ported Enclosure
  • Driver: 8" High Excursion
  • Amplifier: 150 Watts RMS, Class D
  • MFR: 23 Hz - 180 Hz
  • Line-level and Speaker-level Inputs
  • 00 - 180° phase shift switch
  • 110V/220V Selector
  • Dimensions: 7" H x 12" W x 25" D
  • Weight: 24.6 Pounds
  • MSRP: $399 USA
  • Earthquake Sound