JBL STUDIO Series - Amplifier Specifications

PRODUCT: JBL S412P
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 207-264 230 Vrms Normal operation, MOMS required
Parameter Specification Unit
QA Test
Limits Conditions Notes
Amp Section
Type (Class AB, D, other) G n/a
n/a
Class D Preferred...Sink required for Class AB
Load Impedance (speaker) 4 Ohms
n/a
Nominal Z-curve required
Rated Output Power 150 Watts
130
1 input driven
THD @ Rated Power 0.1 %
1
22k filter
THD @ 1 Watt 0.3 %
0.5
22k filter
DC Offset 10 mV-DC
20
@ Speaker Outputs
Damping factor >150 DF
100
Measured at amplifier board
Measured at the speaker connector. 130 Watts
@ THD < 0.08 % @ 50 Hz
>75
50
Measured at speaker cable
Input Sensitivity
Input Frequency 30 Hz
30
Nominal Freq.
LFE input 1.05 Vrms
±2dB
To 140 Watts
Speaker/Hi Level Input 23.66 Vrms
±2dB
To 140 Watts
Signal to Noise
SNR-A-Weighted 100 dBA
90
relative to rated power A-Weighting filter
SNR-unweighted 70 dBr
70
relative to rated power 22k filter
SNR rel. 1W-unweighted 65 dBr
60
relative to 1W Output 22k filter
Residual Noise Floor 1 mVrms
5
Volume @max, using RMS reading
DMM/VOM (or A/P)
Residual Noise Floor 1.5 mVrms
(
max
)
4
Volume @max, w/ A/P Swept
Bandpass Measurement (Line
freq.+ harmonics)
Input Impedance
Line Input 20k ohms
n/a
Nominal
Speaker/Hi Level Input 10k ohms
n/a
Nominal
Filters
S
p
eaker in LP 2nd order fixe
d
Fixed
See AP curves
Subsonic filter (HPF)
See AP curves
LFE Low pass 2nd order Fixed
LFE input driven only See AP curves
Limiter
THD at Max. Output Power
n/a n/a functional
Maximum Output Power Maximum THD as a result of limiting.
Features
--
Auto - On selection switch YES --
functional
Refer to ATO section
LED On-Off switch YES --
functional
Dual LED indicator
Volume pot Taper (lin/log) LOG --
functional
A Taper
Input Configuration
Line In LFE
YES --
functional Single RCA jack
Spkr/Hi Level In YES --
functional
Signal Sensing (ATO)
Auto-Turn-On (yes/no) YES
functional
Auto - on selection switch in Auto
ATO Input test frequency 30 Hz
functional
"
ATO Level LFE Input 4 mV
functional
"
ATO Level Speaker in 100 mV
functional
"
ATO Turn-on time 5 ms
functional
Amp connected and AC on, then
input signal applied
Auto Mute/ Turn-OFF Time 15 minutes
17
T before muting, after signal is
removed
Maximum
S412P AMPLIFIER SPECIFICATIONS
3