Detailed Specifications - JBL Studio S120PII Service Manual

S120PII Studio Series
S120PII 300W Powered Sub/ Plate Amp
LINE VOLTAGE
US 120vac/60Hz
EU 230vac/50-60Hz
Parameter
Amp Section
Type (Class AB, D, other)
Load Impedance (speaker)
Rated Output Power
THD @ Rated Power
THD @ 1 Watt
DC Offset
Damping factor
Input Sensitivity
Input Frequency
L&R
LFE Mode selected
Bass Q Input
Speaker/Hi Level Input
Signal to Noise
SNR-A-Weighted
SNR-unweighted
SNR rel. 1W-unweighted
Residual Noise Floor
Residual Noise Floor
Input Impedance
Line Input (L, R,LFE)
Speaker/Hi Level Input
Filters
LP 4th order fixed
Subsonic filter (HPF) 3rd Order
LFE Low pass 2nd order
Limiter
THD at Max. Output Power
Features
Auto - On -Off switch
Phase switch
Volume pot Taper (lin/log)
Variable crossover 50-150 Hz
HP Speaker out
LFE -Normal Select switch
BassQ Input
BassQ Output
Input Configuration
Line In (L,R) & LFE
Bass Q in
Spkr/Hi Level In
Signal Sensing (ATO)
Auto-Turn-On (yes/no)
ATO Input test frequency
ATO Level LFE Input
ATO Level Speaker in
ATO Level Bass Q input
ATO Turn-on time
Auto Mute/ Turn-OFF Time
Power on Delay time
Yes/No Hi/Lo Line Nom.
Yes 108-132 120 Vrms
Yes 207-264 230 Vrms
QA Test
Spec Unit Limits
D n/a n/a
6 Ohms n/a Nominal
275 Watts 220 1 input driven
0.1 % 1 22k filter
0.1 % 0.5 22k filter
10 mV-DC 60 @ Speaker Outputs
>50 DF 23 Measured at amplifier board
50 Hz 50 Nominal Freq.
425 mVrms ±2dB To 200 Watts
425 mVrms ±2dB To 200 Watts
0.9 Vrms ±2dB To 200 Watts
5.5 Vrms ±2dB To 200 Watts
100 dBA 85 relative to rated power
90 dBr 85 relative to rated power
65 dBr 60 relative to 1W Output
Volume @max, using RMS reading
1 mVrms 2 DMM/VOM (or A/P)
Volume @max, w/ A/P Swept
Bandpass Measurement (Line
1 mVrms(max) 2 freq.+ harmonics)
10K ohms n/a Nominal
10K ohms n/a Nominal
50-150 Hz ± 10
Fixed
Fixed Hz ± 10 LFE input driven only
YES n/a functional Maximum Output Power
--
YES -- functional
0-180 deg functional
LOG -- functional
YES functional
functional
YES -- functional
YES functional
YES functional
YES
-- functional
YES
functional
YES -- functional
YES functional Auto - on selection switch in Auto
50 Hz functional
2 mV functional
50 mV functional
2 mV functional
Amp connected and AC on, then
1 seconds functional input signal applied
T before muting, after signal is
15 minutes 17 removed
3 sec. 4 AC Power Applied
Unit
Normal Operation
Normal operation, MOMS required
Conditions
Bridge type amplifier, None of the speaker
terminals must be connected to system GND at
any time.
Limiter prevents continuous power to exceed
220 Watts.
Measured at the speaker cable. 200 Watts,
measured at speaker output terminals located at
the amp board.
Single input driven
LFE Mode selected, single input driven
Single input driven
Single input driven
A-Weighting filter
22k filter
22k filter
2nd order variable and 2nd order fixed
Refer to ATO section
A Taper
HP single order filter 180 Hz @ 8 Ohms, 90 Hz
@ 4 Ohms load
Disables LP filter, intended for LFE
6.3mm Phono Jack
Bypass, loop-through - Designed for daisy chain
Dual RCA jack
6.3m phono mono Jack
Binding post connector L&R
"
"
"
"
Auto turn of time (T) must be 10 > T < 17
Minutes
2
Notes
Notes