JBL PS1400, Service Manual, Page: 3 / 20

PS1400 SUB Amplifier Detailed Specs
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
Type (Class AB, D, other) D n/a D Bridge amplifier, None of the speaker outputs
must be connected to GND at any time.
Load Impedance (speaker) 6 Ohms 6
Rated Output Power (120VAC) 250 Watts 240 Nominal Input voltage , unit without limiter must
be able to provide output power levels in the
range of 350 Watts
THD @ Rated Power 0.3 % 1
THD @ 1 Watt 0.1 % 0.3
DC Offset 100 mV-DC 100
Damping factor >40 DF 23 200 Watts into 6 Ohms, measured at speaker
out
Input Sensitivity
Input Frequency 60 Hz
LFE input 1.50 Vrms ±2dB 250 Watts into rated impedance load Normal Mode
SYSTEM INPUT 1.10 Vrms ±2dB 1 Watt output , LF level control FCW Normal Mode
SYSTEM INPUT 3.47 Vrms ±2dB 1 Watt output , LF level control FCCWNormal Mode
Signal to Noise
SNR-No Filter 86 dBr 70 relative to rated power No filter 500 KHz BW AP
SNR-A-Weighted 95 dBA 80 relative to rated power A-Weighting filter
SNR-unweighted 95 dBr 80 relative to rated power 22k filter
SNR rel. 1W-unweighted 70 dBr 60 relative to 1W Output 22k filter
Residual Noise Floor 1 mVrms 2 Volume @max, using RMS reading
DMM/VOM (or A/P) BW=20 Khz.
Residual Noise Floor 1.5 mVrms(max) 2 Volume @max, w/ A/P Swept
Bandpass Measurement (Line freq.+
harmonics) (BW=20 Khz)
Input Impedance
Low Level input(LFE) 20K Ohms n/a Nominal
Speaker/Hi Level Input 10K Ohms n/a Nominal
Filters
Normal Mode LP 3rd Order
-3dB Point
Fixed-selectable Hz 100 ± 2 Front panel switch to Normal mode
Reference level 0dB @ 60 Hz
Normal mode
Separated mode LP 3rd
Order -3db Point
Fixed-selectable Hz 280 ± 2 Front panel switch to Separated
Reference level 0dB @ 60 Hz, when
EQ switch in Normal mode
Subsonic Filter -3dB point Fixed Hz 20.5 ± 2 Ref level 0dB ref at 60 Hz Normal
mode
Limiter
THD at Max. Output Power n/a n/a functional Maximum Output Power Maximum THD as a result of limiting. Must be
lower than 10%
Signal Sensing (ATO)
Auto-Turn-On (yes/no) YES functional
ATO Input test frequency 60 Hz functional "
ATO Level LFE Input 6 mV functional " Maximum acceptable level.
ATO Level Speaker in 184 mV functional " Maximum acceptable level.
ATO Turn-on time 1 sec. functional Amp connected and AC on, then
input signal applied
Auto Mute/ Turn-OFF Time 15 Minutes 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 5 mV-peak n/a @ Speaker Outputs
Turn-on Transient 50 mV-peak 2V-pp @ Speaker Outputs AC Line cycled from OFF to ON
Turn-off Transient 50 mV-peak 2V-pp @ Speaker Outputs AC Line cycled from ON to OFF
Efficiency 70 % 65 Nominal Line voltage 120 VAC
15 Watts 18 @ nom. line voltage
Power Cons. @ rated power 425 Watts 462 @ nom. line voltage 300 Watts @ 6 Ohms nominal line voltage
Protection
Short Circuit Protection YES functional Direct short at output Amplifier should resume operation after short
circuit condition removal
Thermal Protection YES functional @1/8 max unclipped Power at 1.06
times the input voltage
Temperature rise should not exceed 35K rise for
domestic version or 30K rise for European
versions. PROTECTION IS SET FOR
ABNORMAL OPERATING CONDITIONS
DC Offset Protection YES - DC present at Speaker Out leads
Line Fuse Rating
USA-Domestic 4 Amps Type-T or Slo Blo-250 V
EU 2 Amps Type-T or Slo Blo-250 V External fuse with UL/SEMKO rated holder
PS1400