JL Audio gotham v2 Owner's Manual page 29

IMPORTANT
| Gotham v2
IMPORTANT! MAKE SURE THE ROOM IS QUIET DURING D.A.R.O.
CALIBRATION! TURN OFF ANY NOISY APPLIANCES NEAR THE LISTENING
ROOM (DISHWASHERS, WASHING MACHINES, ETC.)
IT IS PARTICULARLY IMPORTANT TO TURN OFF AIR CONDITIONERS OR HEAT
PUMPS DURING CALIBRATION. THESE FORCED-AIR-TYPE HVAC SYSTEMS
CAN CREATE MODERATE LEVELS OF 15 – 20 HZ NOISE THAT MAY INTERFERE
WITH CALIBRATION.
4) Applying Digital Automatic Room Optimization (D.A.R.O.)
You are now ready to apply the power of JL Audio's exclusive Digital Automatic
Room Optimization (D.A.R.O.) system. This system will measure the response of
the subwoofer at your primary listening seat and apply a powerful 18-band equalizer
to tame the peaks caused by room modes, resulting in smoother, more accurate bass
performance. If you are using multiple Gotham v2s in a master/slave configuration,
you will only need to address the unit designated as "master" to perform D.A.R.O.
calibration for the entire subwoofer system. Note that all front-panel signal
processing is defeated during D.A.R.O. calibration, regardless of the knob settings.
Normal operation is restored once calibration is complete.
a) Set the Main Power switch to the "ON" position and be sure the Gotham v2's
indicator lights are switched "ON" via the "Lights" switch.
b) Remove the calibration microphone from its protective pouch and connect its
cable to the mini-XLR jack on the Gotham v2's front control panel.
NOTE: D.A.R.O. Calibration is only possible when the included JL Audio test
microphone is plugged in to the Gotham v2 front panel. The "Calibrate" feature is
disabled with no microphone plugged in to prevent accidental loss of settings.
c) Connect the microphone to the other end of the mic cable and temporarily place
the mic in the primary listening seat. If you have a microphone stand, you can
place the microphone at head height and position in the primary listening seat.
d) On the Gotham v2's control panel, press the "Calibrate" button. The green light
on the "Calibrate" button will flash slowly, indicating that calibration will begin
in 5 seconds.
e) Within 5 seconds of pressing the "Calibrate" button, return to your primary
listening seat and hold the microphone in your normal, seated head position at the
approximate height of your ears.
f) A noise sequence will be played through the Gotham v2 that sounds like hashy
static. The sequence will last approximately 3 minutes. During this process, the
D.A.R.O. system is taking a frequency response measurement at your seat and
correcting the problems it finds. The D.A.R.O. system also compensates for
any before & after level differences so that your Gotham v2 will have a similar
perceived loudness after the calibration process. When D.A.R.O. is finished
calibrating, the "Calibrate" button will light and stay on, indicating a successful
calibration.
Should you wish to run a new calibration, simply repeat the steps above.
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