Read JBL SUB 550P Service Manual online
LINE VOLTAGE
Yes/No
Hi/Lo Line
Nom.
Unit
Notes
US 120vac/60Hz
Yes
108-132
120
Vrms
Normal Operation
EU 230vac/50-60Hz
Yes
207-253
230
Vrms
Normal operation, MOMS required
No
90-110
100
Vrms
Normal Operation
Parameter
Specification
Unit
QA Test
Limits
Conditions
Notes
Amp Section
Type (Class AB, D, other)
D
n/a
n/a
Load Impedance (speaker)
4
Ohms
n/a
Nominal
AVG System impedance
10.8
Ohms
n/a
AP Computed BW from 20 to 500Hz Refer to AP Graph
Rated Output Power
250
Watts
220
AVG Peak voltage
45.8
Vpk
Reference 170mV driven into a single input
Average PK voltage, 3/20 Cycles 50 Hz, Driven
6dB above its input sensitivity , rated impedance
THD @ Rated Power
0.5
%
1
22K filter+AUX-0025
THD @ 1 Watt
0.2
%
0.3
22K filter+AUX-0025
DC Offset
10
mV-DC
50
@ Speaker Outputs
Damping factor
>50
DF
20
Measured at amplifier board 90% of
full power
Measured at the speaker cable. 225 Watts @
THD < 0.1 % @ 50 Hz
Input Sensitivity
Input Frequency
50
Hz
50
Nominal Freq.
L&R
5.6
mVrms
±1dB
To 1 Watt, Ap Zo=25
Single input driven
LFE input
5.6
mVrms
±1dB
To 1 Watt, Ap Zo=25
Single input driven, LFE switch ON
System Gain
51
dB
Reference
Single input driven Normal or LFE mode
Signal to Noise
SNR-A-Weighted
80
dBA
75
relative to 1W-Inputs terminated
A-Weighting filter
SNR-unweighted
70
dBr
65
relative to 1W-Inputs terminated
22K filter
Residual Noise Floor
<2.0 mVrms(max)
2.5
Volume @max, w/ A/P Swept
Bandpass Measurement (Line
freq.+ harmonics) (BW=20 KHz)
Line level inputs must be terminated using
1KOHM
Input Impedance
Line Input (L, R,LFE)
5.5K
ohms
n/a
Nominal
Filters
LP filter Variable
50-150 Hz
± 10
4th Order variable
Refer to AP curves
Subsonic filter (HPF) 2nd Orde
Fixed
F=32Hz,Q=0.925
Refer to AP curves
Friend circuit
Fixed
F=59Hz,Q=3.5, Av=-1dB
Refer to AP curves
LFE Low pass
Fixed
200>LP-LFE<500
Refer to AP curves
Limiter
THD at Max. Output Power
13
%
functional
Drive unit 6dB above the required
level to obtain full power
Approximately 208mV
Maximum THD as a result of limiting.
Features
--
Volume pot Taper (lin/log)
LOG
--
functional
A Taper
Phase switch
0-180
deg
functional
LP Filter defeat switch
YES
functional
Disables LP filter, LFE Mode
LED Indicator
YES
functional
Bi-color LED loacated at the amplifier panel, Red
Standby, Green-On
Input Configuration
Line In (L,R) or LFE
YES
--
functional
Dual RCA jack, For LFE use L or R
Signal Sensing (ATO)
Auto-Turn-On (yes/no)
YES
functional
ATO Input test frequency
50
Hz
functional
"
ATO Level LFE Input
2
mV
functional
"
Maximum acceptable level.
ATO Turn-on time
5
ms
functional
Amp connected and AC on, then
input signal applied
Auto Mute/ Turn-OFF Time
5-15
minutes
5-15
T before muting, after signal is
removed
Auto turn of time (T) must be 5 > T < 15
Minutes
Power on Delay time
3
sec.
4
AC Power Applied
Transients/Pops
ATO Transient
0.5
V-peak
0.5V
@ Speaker Output
Amplifier activated by signal presence at the
Line input
Turn-on Transient
0.5
V-peak
0.8V
@ Speaker Output
AC Line cycled from OFF to ON
Turn-off Transient
0.5
V-peak
0.8V
@ Speaker Output
AC Line cycled from ON to OFF
Detailed Specifications
SUB 550P / 230
3
Click on the first or last page to see other SUB 550P service manuals if exist.