FRONT PANEL CONTROLS IN DETAIL
Power Switch
The "Power" switch determines the operational readiness of the Fathom v2
subwoofer and should be the only switch used to turn the Fathom v2 on and off. Do
not use a power strip switch, switched outlet or any other external switch as these
may result in undesirable and potentially damaging transient pops. Do not unplug
the Fathom v2's AC power cord while the unit is turned on. The power switch has
three positions:
"On": The Fathom v2 is fully powered at all times. Front panel lights are on
unless they have been turned off via the "Lights" switch.
"Off ": The Fathom v2's internal power amplifier is powered down. In this state,
a negligible current draw will exist for operating the main power relays. All front
panel lights are off .
"Auto": The Fathom v2 will power up its internal amplifier when an audio signal is
present at any of its inputs and will power down the internal amplifier if no signal has
been detected at its inputs for thirty (30) minutes. When dormant, the Fathom v2 will
draw a very small amount of current (< 5 watts) to power its signal-sensing circuitry.
Front panel lights will turn off when the Fathom v2 powers down and light when the
Fathom v2 powers up (unless they have been turned off via the "Lights" switch).
In the unlikely event that the Auto feature is not sensitive enough for a particular
system, use a Y-cable adaptor to split the incoming signal into both RCA or XLR
inputs on the Fathom v2. This will increase the input sensitivity by 6 dB. Please be
aware that if the Auto sensitivity is too high or if there is significant noise on the
input cable, the Fathom v2 may not turn off as desired. If this happens, remove the
Y-cable adaptor or look for the noise source in the upstream components.
Digital Automatic Room Optimization (D.A.R.O.)
A powerful feature of the JL Audio Fathom v2 subwoofers is their innovative
Digital Automatic Room Optimization (D.A.R.O.) technology. This one-touch
system includes 18 bands of digital equalization to eliminate the largest acoustic
response peaks in your home theater at the main listening seat, greatly improving
the in-room low-frequency response. Calibration of the D.A.R.O. system is fully
automated. Please consult the next section of this manual for details on how to use
the D.A.R.O. system.
Using the included JL Audio calibration microphone, the D.A.R.O. calibration
procedure takes less than three minutes. In brief, you will connect the included
microphone to the "Calibration Mic." input, press the Calibrate button, and then
hold the microphone at ear height in your main listening seat during the test. A
noise sequence will be played through the Fathom v2 subwoofer, and the room
response will be automatically measured, analyzed and equalized to eliminate
the single largest acoustic room response peak at your listening seat. For detailed
instructions on the D.A.R.O. setup procedure, refer to pages 29-30.
Calibration Mic. Input
This input is for connecting the supplied JL Audio calibration microphone to the
Fathom v2 subwoofer. Connect one end of the supplied cable to the microphone and
the other end to this jack prior to using the D.A.R.O. system. The D.A.R.O. system
is specifically calibrated to this microphone and its connection scheme is specific to
the supplied microphone. The calibration sequence will not operate when a different
microphone is connected or if no microphone is connected.
EN | Pg 14
IMPORTANT
Digital Automatic Room Optimization
Power
o | on | auto
calibration mic.
Digital Automatic Room Optimization
Power
o | on | auto
calibration mic.
demo
Digital Automatic Room Optimization
Power
o | on | auto
calibration mic.
Input
master
demo
defeat
calibrate
Input Mode
master | slave
defeat
calibrate
Input Mode
master | slave
demo
defeat
calibrate
| Fathom
v2
®
Lev
ref.