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LS120P
JBL LS Sub 250W Powered Sub Amp
LINE VOLTAGE
US 120vac/60Hz
EU 230vac/50-60Hz
Parameter
Amp Section
Type (Class AB, D, other)
Load Impedance (Driver min)
System average impedance from
20 to 500 Hz
Driver size
Rated Output Power (120VAC)
Rated Output Power (230VAC)
AVG RMS Dynamic Power
THD @ Rated Power
THD @ 1 Watt
DC Offset
Damping factor
Input Sensitivity
Input Frequency
L&R
LFE input
System Gain
System Gain in dB
Signal to Noise
SNR-A-Weighted
SNR-unweighted
SNR rel. 1W-unweighted
Residual Noise Floor
Input Impedance
Line Input (L, R,LFE)
Filters
LP filter Variable
Subsonic filter (HPF) 2rd Order
Friend circuit
LFE Low pass
Limiter
THD at Max. Output Power
Features
Volume pot Taper (lin/log)
Phase switch
LP Filter defeat switch
Input Configuration
Line In (L,R)
Signal Sensing (ATO)
Auto-Turn-On (yes/no)
ATO Input test frequency
ATO Level L, R or LFE Mode
ATO Turn-on time
Auto Mute/ Turn-OFF Time
Yes/No
Hi/Lo Line
Yes
108-132
Yes
207-253
Specification
Unit
D
n/a
4
Ohms
8.65
Ohms
12
inches
250
Watts
269
Watts
210
Watts
0.5
%
0.2
%
50
mV-DC
>50
DF
50
Hz
22
mVrms
22
mVrms
90.9
n/a
39.17
dB
100
dBA
90
dBr
65
dBr
1.5
mVrms(max)
10K
ohms
50-150 Hz
Fixed
Fixed
200>LP<500 Hz
N/A
N/A
--
LOG
--
0-180
deg
YES
YES
--
YES
50
Hz
1.5
mV
5
ms
5-15
minutes
Nom.
Unit
120
Vrms
230
Vrms
QA Test Limits
Conditions
n/a
n/a
Nominal
n/a
n/a
240
250
270
1
22k filter
0.5
22k filter
50
@ Speaker Outputs
Measured at
20
amplifier board
50
Nominal Freq.
±1dB
To 1 Watt
±1dB
To 1 Watt
Reference
Reference
95
relative to rated
85
relative to rated
60
relative to 1W
Volume @max, w/
A/P Swept
2
Bandpass
n/a
Nominal
± 10
LFE input driven
functional
Maximum Output
functional
functional
functional
LFE use either L or
R inputs, LFE
functional
switch must be
functional
functional
functional
Amp connected and
functional
AC on, then input
T before muting,
5-15
after signal is
2
Notes
Normal Operation
Normal operation, MOMS
Notes
Reference
Reference
Domestic version only 120
EU Version only
230
VAC-50-60 Hz
Average RMS power, 3/20
Cycles 50 Hz, Driven 6dB
above its input sensitivity
sensitivity, average of the first
Measured at the speaker
cable. 150 Watts @ THD <
Single input driven
Single input driven, LFE switch
Single input driven Normal
Single input driven Normal
A-Weighting filter
22K filter
22K filter
Line level inputs must be
terminated using
1KOHM
4th order variable (24dB/oct)
Maximum THD as a result of
A Taper
Disables LP filter, intended for
Dual RCA jack
Maximum acceptable level.
Auto turn of time (T) must be
5 > T < 15 Minutes
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