Sonance Sub 12-250 - Manual (Page 12)

12
SONANCE CABINET SUBWOOFERS
(continued from page 11)
To determine the correct setting of the P
HASE switch, listen to music with significant impactful bass content with the switch in
each position (it may be helpful to sit in the normal listening position while someone else changes the P HASE switch between
0 and 180). Leave the switch in the position that produces audibly louder bass with more impact.
NOTE: The P
H A S E
switch will function no matter what position the B
Y PA S S
switch is set in.
Level Control
The L EVEL control sets the subwoofer’s volume. When setting the subwoofer’s L EVEL control by ear, try to find a volume
setting where the bass sounds balanced on both music and films. Listen to several different music recordings and film
soundtracks that contain strong bass passages and try to find a setting for the L
EVEL control that doesn’t over-emphasize
the bass or make it sound weak.
The most accurate way to set the L EVEL control is with calibrated test noise or test tones and a sound-pressure level (SPL)
meter or real-time analyzer. There are several CDs and DVDs that contain subwoofer test signals. If you use an SPL meter,
set the subwoofer’s L
EVEL control so that it plays at the same volume as the system’s other speakers.
NOTE: The L
E V E L
control does not function when the B
Y PA S S
switch is in the ON position.
Auto-On
The subwoofer is in the S TANDBY mode whenever its power cord is plugged-into a live AC outlet. When the subwoofer
detects an audio signal at either the L INE or S PEAKER I NPUT it will automatically turn ON (the rear-panel On/Standby
Indicator will illuminate Green). The subwoofer will continue to remain ON for approximately 30 minutes after no signal
is detected at either input, then it will return to S TANDBY (the rear-panel On/Standby Indicator will illuminate Red).
Grille Pull Strap
Your subwoofer’s flush-mount grille has a pull strap that makes it easy to remove the grille to perform adjustments. Once
your subwoofer been installed and you have finalized all of the adjustments, for a neater appearance you can tuck the
grille pull strap behind the grille before putting the grille back on the subwoofer. After that you can still remove the grille
by using a dull knife or similar tool to gently pry the grille away from the subwoofer.