JL Audio fathom v2 User Manual

| Fathom v2Page 14
FRONT PANEL CONTROLS IN DETAIL
Power Switch
e “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 o. 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. e power switch has
three positions:
“On”: e Fathom v2 is fully powered at all times. Front panel lights are on
unless they have been turned o via the “Lights” switch.
“O ”: e Fathom v2’s internal power amplier is powered down. In this state,
a negligible current draw will exist for operating the main power relays. All front
panel lights are o .
“Auto”: e Fathom v2 will power up its internal amplier when an audio signal is
present at any of its inputs and will power down the internal amplier 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 o when the Fathom v2 powers down and light when the
Fathom v2 powers up (unless they have been turned o 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. is will increase the input sensitivity by 6 dB. Please be
aware that if the Auto sensitivity is too high or if there is signicant noise on the
input cable, the Fathom v2 may not turn o 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. is 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
is 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. e D.A.R.O. system
is specically calibrated to this microphone and its connection scheme is specic to
the supplied microphone. e calibration sequence will not operate when a dierent
microphone is connected or if no microphone is connected.
IMPORTANT
LP freq. (Hz) e.l.f. trim (dB) phase (deg.)
Polarity
0
|
180 deg.
LP Filter
o
|
12dB
|
24dB
Master Level
max
0
Lights
o
|
dim
|
on
-∞
Level Mode
ref.
|
variable
Input Mode
master
|
slave
calibration mic. demo defeat calibrate
Power
o
|
on
|
auto
Digital Automatic Room Optimization
LP freq. (Hz) e.l.f. trim (dB) phase (deg.)
Polarity
0
|
180 deg.
LP Filter
o
|
12dB
|
24dB
Master Level
max
0
Lights
o
|
dim
|
on
-∞
Level Mode
ref.
|
variable
Input Mode
master
|
slave
calibration mic. demo defeat calibrate
Power
o
|
on
|
auto
Digital Automatic Room Optimization
LP freq. (Hz) e.l.f. trim (dB) phase (deg.)
Polarity
0
|
180 deg.
LP Filter
o
|
12dB
|
24dB
Master Level
max
0
Lights
o
|
dim
|
on
-∞
Level Mode
ref.
|
variable
Input Mode
master
|
slave
calibration mic. demo defeat calibrate
Power
o
|
on
|
auto
Digital Automatic Room Optimization

JL Audio fathom v2 Specifications

General

Brand	JL Audio
Model	fathom v2
Category	Subwoofer
Language	English