Speaker 揚聲器 / Earthquakesound / FF 6.5
FF 6.5

The new FF line of subwoofers is the next evolutionary step in the continued quest for superb bass performance. The FF series offers versatility, small footprint and good looks all while staying surprisingly affordable.


The FF6.5 takes the Slot-Port design a significant step further by fusing the Slot-Port with an advanced reflex apparatus. This new technology merges a quarter-wavelength transmission line with a variable cross-section folded-horn. This novel synthesis of technologies yields an acoustic reflex device with unsurpassed efficiency. Resulting in a massive boost to low frequency output, empowering the FF6.5 to rival ordinary designs with woofers up to 10 inch.


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
Line through (RCA) audio outputs
High level (high level) audio inputs
Line through (high level) audio output
6.5" high power subwoofers
0 - 180 degrees phase shift
Black ash finish