Infinity PS-12 Service Manual

PS-12 Powered Sub/ Plate Amp
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) D n/a n/a
Load Impedance (speaker) 5.6 Ohms n/a Nominal
Rated Output Power (120VAC) 150 Watts 138 Domestic version only 120 VAC-60 Hz
Rated Output Power (230VAC) 150 Watts 128 EU Version only 230 VAC-50 Hz
AVG RMS Dynamic Power 250 Watts 225
Average RMS power, 3/20 Cycles 50 Hz, Driven
6dB above its input sensitivity sensitivity
THD @ Rated Power 0.5 % 1 22K filter 140 Watts
THD @ 1 Watt 0.1 % 0.5 22K filter
DC Offset 10 mV-DC 30 Amplifier output
Damping factor >50 DF 20 Measured at amplifier board
Measured at the amplifier board. 140 Watts @
50 Hz, THD must be less than 0.1%
Input Sensitivity
Input Frequency 35 Hz 35 Nominal Freq.
L&R 250 mVrms ±2dB To 150 Watts, Ap Zo=600 Ohms Single input driven
L or R input 250 mVrms ±2dB To 150 Watts , Ap Zo=600 Ohms Single input driven, LFE switch ON
Speaker/Hi Level Input 2.3 Vrms ±2dB To 150 Watts Single input driven
Signal to Noise
SNR-A-Weighted 90 dBA 85 relative to rated power A-Weighting filter
SNR-unweighted 85 dBr 75 relative to rated power 22K filter
SNR rel. 1W-unweighted 65 dBr 60 relative to 1W Output 22K filter
Residual Noise Floor 1 mVrms 1.5
Volume @max, using RMS reading
DMM/VOM (or A/P) BW=20 Khz.
Line level inputs must be terminated using
1KOHM
Residual Noise Floor 1.5 mVrms(max) 1.5
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) 10K ohms n/a Nominal
Speaker/Hi Level Input > 4.7K ohms n/a Nominal
Filters
LP filter 4th order fixed 50-150 Hz ± 10 2nd Order variable and 2nd order fix 2nd order variable + 2nd order fix-24 db/Octave
HP Filter 2nd order Fixed F=29 Hz, Q=1.5
LFE Low pass 2nd order 200>LP<1K Hz LFE input driven only
Notch filter (Friend circuit) 54 Hz, Q=1.738, Av=-5.0dB
HP speaker out connector
Left & Right 200 Hz ± 10 Speaker input driven - 4 Ohms (Applies to 230VAC model only)
Left & Right 100 Hz ± 10 Speaker input driven - 8 Ohms (Applies to 230VAC model only)
Limiter
THD at Max. Output Power n/a n/a functional Maximum Output Power Maximum THD as a result of limiting.
Features
--
Volume pot Taper (lin/log) LOG -- functional A Taper
Speaker input connectors YES functional L & R Binding post connector
HP Speaker out YES functional
L & R Binding post connectors and High pass
filter (Applies only to 230V model)
Phase switch 0-180 deg functional
LP Filter defeat switch YES functional Disables LP filter, intended for LFE
Input Configuration
Line In (L,R) & LFE YES -- functional Dual RCA jack
Spkr/Hi Level In YES -- functional Binding post connector L&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 Level Speaker in 40 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 15 minutes 18
T before muting, after line or
speaker level signal is removed
Auto turn of time (T) must be 5 > T < 18
Minutes
Power on Delay time
3 sec. 4 AC Power Applied
PS-10/PS-12
4

Infinity PS-12 Specifications

General

Brand	Infinity
Model	PS-12
Category	Subwoofer
Language	English