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- CONTENTS -
BASIC SPECIFICATIONS -¦-¦-¦-¦-¦-¦-¦..-¦-¦-¦-¦-¦..1
DETAILED SPECIFICATIONS-¦-¦-¦-¦-¦-¦-¦..-¦-¦-¦.-¦..2
PACKAGING-¦-¦-¦-¦-¦-¦.-¦-¦-¦-¦-¦-¦-¦-¦-¦.-¦....-¦\
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CONTROLS AND CONNECTIONS-¦-¦-¦-¦..-¦-¦.-¦-¦-¦..5
OPERATION-¦.-¦-¦-¦-¦-¦-¦-¦-¦-¦-¦-¦-¦-¦-¦-¦-¦-¦\
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EXPLODED VIEW /PARTS LIST -¦-¦-¦-¦-¦.-¦.-¦....-¦-¦8
TEST SET UP AND PROCEDURE-¦-¦-¦-¦-¦-¦..-¦....-¦-¦9
BLOCK DIAGRAM-¦-¦-¦-¦-¦-¦-¦-¦-¦-¦..-¦-¦-¦-¦.-¦..-¦10 \
TROUBLESHOOTING FLOW CHART-¦-¦-¦-¦-¦-¦..........12
ELECTRICAL PARTS LIST (120v) -¦-¦-¦-¦-¦-¦-¦-¦-¦-¦.13
PCB DRAW INGS-¦-¦-¦-¦-¦-¦.-¦-¦-¦-¦-¦-¦-¦-¦-¦-¦-¦..1\
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SEMICONDUCTOR PINOUTS-¦-¦-¦.-¦-¦-¦-¦-¦-¦.-¦-¦..22
SCHEMATICS (120v)-¦-¦-¦-¦-¦-¦-¦-¦-¦-¦-¦-¦-¦-¦-¦..\
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Basic Specifications
PS212 Powered Subwoofer
Frequency Response: 25Hz -“ 150Hz (±3dB)
Maximum Amplifier Output: 400 W atts RMS; 700 W atts Peak (20Hz -“ 150Hz with no more than 0.1% THD)
Crossover Frequencies: 50Hz -“ 150Hz, 24dB/octave, continuously variable
Driver: 12" (250mm) MMD®
Dimensions (H x W x D): 18" x 14-3/8" x 18-3/4" (with grille) (457mm x 365mm x 476mm)
W eight: 44.7 lb (20.3kg)
Infinity continually striv es to update and improv e existing products, as well as create new ones. The specifications
and construction details in this and related Infinity publications are therefore subject to change without notice.
PS series PS212 subwoofer
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PS 212 subwoofer 400 W Powered Sub/ Plate Amp
LINE VOLTAGEYes/N o Hi/Lo Lin e Nom.Uni t Note s NA 120vac/60Hz Yes 108-132 120 Vrms Normal Operation
EU 230vac/50-60Hz Yes 207-264 230 Vrms Normal operation, MOMS required
Parameter Specification UnitQA Test
Limits Conditions Notes
Amp Sectio
n Type (Class AB, D, other) D---
Load Impedance (speaker) 4 Ohms Nominal Z-curve required
Rated Output Power 300 Watts Regulated 120 V line
THD@ Rated Power 1 % 22k filter, 50Hz 300W
THD @ 1 Watt 0.5 % 22k filter, 50Hz
DC Offset undefined mV-DC < 20 @ Speaker Outputs
Damping factor 20 N/A > 15 measured at 50 Hz
Input Sensitivit
y Line Input 130 mV mVrms 300 W @ 50Hz1 input driven
Signal to Nois
e SNR-A-Weighted 100 dBArelative to rated power A-Weighting filter
SNR-unweighted 70 dBr relative to rated power 22k filter
SNR rel. 1W-unweighted 60 dBr relative to 1W Output 22k filter
Residual Noise Floor 2 mVrms Volume @max, using RMS reading DMM/VOM (or A/P)
Residual Noise Floor 1
mVrms(max) Volume @max, w/ A/P Swept Bandpass Measurement (Line freq.+ harmonics)\
Input Impedanc
e Line Input 6.5 k ohms Nominal
Active Filter
s Low Pass (fixed or variable ) VARIABLE --
Frequency 50 - 150 Hz Slope 24 dB/OctaveQ Butterworth --
High Pass (HPF
) FIXXED --
Frequency 29 Hz
Slope 12 dB/Octave Q 2 --
Friend Circui
t FIXXED --
Frequency 60 Hznotch filter
Slope 6 dB/Octave Q 2.5 --
Video Boos t NONE --
Boost dB
Range Hz
Switches
Main Power ON/OFF YES -- Type rocker -- Located on amp plate TV-5
LFE/ Low Pass filter mode YES -- Type mini toggle -- Located on amp plate
Polarity Switch YES -- "Off": 0°; "On": 180° Type mini toggle -- Located on amp plate
Limite
r (yes/no ) YES compressor and limiter
THD at Max. Output Power less than 2 % Maximum Output Power Maximum THD as a result of limiting.
Output Level Contro
l Volume Control Pot YES-- gain control mounted on amp panel
Taper (lin/log) log A taoer --
@ minimum setting no output
Input/Output Configuratio
n Line In (L,C,R,AC3,Mono) Stereo -- RCA phono jack, gold plated
LFE In YES -- Shared with "R" Line In jack
Signal Sensing (ATO
) Auto-Turn-On (yes/no) YES--
ATO Input Test Frequency 100 Hz
ATO Input Threshold 1 mV typ. LPF "On", BOS "Off"
ATO Low Pass cutoff 1 kHz ATO-LPF for noise immunity LPF "On", BOS "Off"
PS series PS212 subwoofer
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