JBL ATX60, ATX10C With LFE Connection Phase Control, Other Connections, Auto-On Signal Sensing

O P E R AT I O N
With LFE Connection	Phase Control
If you are using the LFE input,	The proper adjustment of the
the subwoofer's CROSSOVER	subwoofer's rear panel phase
control is NOT active, because	switch for your system depends
this function is controlled by	on several variables such as
your surround processor.	room size, subwoofer place-
When using the LFE input, set	ment and listener position.
the subwoofer's VOLUME con-	Listen to a familiar selection
trol to "Max" and calibrate the	with powerful bass at a typical
subwoofer level along with the	listening level, while occasion-
other speakers according to	ally changing the position of the
the set-up instructions in the	phase switch. The position
owner's manual for your sur-	which provides maximum bass
round receiver/amplifier.	output at your listening position
Other Connections	is the correct position.
If you are using any other con-
nection method, start with the
subwoofer VOLUME control in
the "9 o'clock" position and the
CROSSOVER in the 12 o'clock
position. To fine-tune the sub-
woofer's volume and crossover
frequency settings, listen to
familiar material with powerful
bass at a typical listening level.
Bass response should not over-
power the room, but instead
contribute to a harmonious
blend across the entire musical
range. Many users have a ten-
dency to set the subwoofer vol-
ume and crossover too high,
believing that a subwoofer is
there to produce lots of boom
and shake the room to make its
presence felt. This is not entire-
ly true. A subwoofer is there to
enhance bass, extending the
response of the entire system
so that bass can be felt as well
as heard.
However, overall balance must
be maintained; otherwise, the
music will not sound natural.
An experienced listener will set
the volume and crossover
of the subwoofer so that its
impact on bass response is
always there, but is never
6 obtrusive.

Auto-On Signal Sensing

The ATX Subwoofer incor- porates automatic signal- sensing circuitry which turns the subwoofer on instantly when an audio signal is present. When a signal has not been detected for approxi- mately 1.5 minutes, the sub- woofer automatically goes into standby mode.