Operation; Power; Level Control; Crossover Adjustments - JBL Northridge E-Series E150P Service Manual

E150P/P10SW subwoofers

OPERATION

Power

When the unit is plugged in
and the power switch is on
and no signal is received, the
LED on the amplifier panel will
turn red. When a signal is
present, the LED will turn
green.
* E150P: LED is on top of the cabinet

Level Control

The subwoofer Level Control
adjusts the volume of the
subwoofer relative to the rest
of the system. Proper level
adjustment depends on sev-
eral variables such as room

Crossover Adjustments

LEVEL
Min
LFE
PHASE
0º
CROSSOVER
FREQUENCY
50Hz
L
LINE LEVEL IN
For LFE use L or R
HIGH
LEVEL
+ –
ON OFF
POWER
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
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Note: It will take several min-
utes for the LED to turn from
green to red after the input
*
signal to the subwoofer is
removed. Due to JBL's unique
high-output, high-efficiency
amplifier design, power con-
size, subwoofer placement,
type of main speakers and
position. Adjust the subwoofer
level so that the volume of the
bass information is pleasing
to you.
The Crossover Frequency
Control determines the highest
frequency at which the sub-
woofer reproduces sounds. If
Max
NORMAL
your main speakers can com-
fortably reproduce some low-
180º
frequency sounds, set this
control to a lower frequency
150Hz
setting, between 50Hz and
100Hz. This will concentrate
R
the subwoofer's efforts on
the ultradeep bass sounds
L
required by today's films and
music. If you are using smaller
IN
bookshelf speakers that do not
R
extend to the lower bass fre-
quencies, set the low-pass
crossover control to a higher
120V
60Hz
setting, between 120Hz and
150Hz. This control is not used
when the LFE switch is in the
"LFE" position.
sumption is minimal when the
subwoofer is not receiving a
signal. Of course, the sub-
woofer can be turned off,
whenever desired, if you do
not wish to leave it in auto
(standby) mode.
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