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Earthquake - FF-6.5 - Front Firing Powered Subwoofer

Earthquake - FF-6.5 Powered Subwoofer

Earthquake - FF-6.5 Powered Subwoofer

Earthquake's FF subwoofer system was designed to offer consumers budget and volume optimized subwoofer system solutions.

With built-in 150-Watt Class "A/B" high effiency power amplifier, auto signal sensing, 0 - 180° phase shift and 40 - 180Hz crossover, the FF6.5 is your go to sub when both budget and space are limited.

But don't let its price nor size fool you, this small sub can produce over 100dB peak SPL (includes room gain) from 40Hz to 135Hz.


  • Front firing design with small footprint
  • Single slot port and transmission line design for optimized bass output
  • 150 watts class "AB" , high efficiency power amplifier
  • 12 dB / Octave variable filter from 40 Hz to 180 Hz
  • Automatic signal detection circuitry, When in "AUTO" position, it automatically turns on the subwoofer when an audio signal is detected. It also shuts the subwoofer off after 30 minutes if no signal is detected
  • Status LED indicators. ON when blue, OFF when red
  • Low level (RCA) audio inputs
  • 6.5" high power subwoofers
  • 0 - 180° phase shift
  • 40 - 180Hz crossover


Manufacturer: Earthquake
Model Number: FF 6.5
Speaker Type: Front-firing, Ported Box


Power Handling: 150 Watts
Impedance: N/A
Frequency Response: 28 Hz - 180 Hz
Sensitivity: N/A
Crossover: 40 - 180 Hz
Connection Type/Input: N/A
Bi-Wire/Bi-Amp: N/A


Woofer: 6.5" High-powered
Mid Range: N/A
Tweeter: N/A
Passive Radiator: N/A



9.94" (H) x 7.69" (W) x 14.25" (D)
(252.4 x 194 x 361mm)

Shipping Dimensions: N/A
Weight: 16.5 lbs. (7.5 kgs)
Shipping Weight: N/A
Finish: Black
Grill: N/A
Warranty: 1 Year standard, 4 Year optional (and accidental)
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