Infinity PS212, Руководство по обслуживанию, Страница: 3 / 33

PS 212 subwoofer 400 W Powered Sub/ Plate Amp
LINE VOLTAGE Yes/No Hi/Lo Line Nom. Unit Notes
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 Unit
QA Test
Limits
Conditions Notes
Amp Section
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 Sensitivity
Line Input 130 mV mVrms 300 W @ 50Hz 1 input driven
Signal to Noise
SNR-A-Weighted 100 dBA relative 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 Impedance
Line Input 6.5 k ohms Nominal
Active Filters
Low Pass (fixed or variable)
VARIABLE --
Frequency 50 - 150 Hz
Slope 24 dB/Octave
Q Butterworth --
High Pass (HPF) FIXXED --
Frequency 29 Hz
Slope 12 dB/Octave
Q 2 --
Friend Circuit FIXXED --
Frequency 60 Hz notch filter
Slope 6 dB/Octave
Q 2.5 --
Video Boost 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
Limiter (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 Control
Volume Control Pot YES -- gain control mounted on amp panel
Taper (lin/log) log A taoer --
@ minimum setting no output
Input/Output Configuration
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"
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PS series PS212 subwoofer