Product overview – EarthQuake FF-6.5 User Manual
Page 5

Product Overview
Class "A/B" Amp
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150 Watts Class "A/B" high efficiency power amplifier
12 dB/Octave variable filter from 40 Hz to 180 Hz
Automatic signal detection circuitry. When "ON", 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
Low level (RCA) audio inputs
-5-
115 / 230V power
c o n n e c t o r w i t h
built-in fuse for
max protection.
115 / 230V selector
Signal detection circuitry.
W h e n " O N " , i t
a u t o m a t i c a l l y
shuts off the amplifier in
30 minutes if music is not
detected.
Volume control to manually
adjust the subwoofer’s sound
level. Always start at the MIN
position and increase slowly
until desired volume is reached.
0-180° Phase switch for
precision bass response
control.
Power light indicator.
RED: Standby
GREEN: ON
Va r i a b l e 1 2 d B p e r
octave, low pass filter.
R a n g e 4 0 - 1 8 0 H z
Recommended general
setting at 2 o'clock.
Low level (RCA)
a u d i o i n p u t ,
in high pass
mode @ 100Hz.
FF6.5 Transmission Line Design