PS series PS28 subwoofer
INFINITY PRIMUS PS28 150W Powered Sub/ Plate Amp |
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LINE VOLTAGE | Yes/No | Hi/Lo Line | Unit | Notes |
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US 120VAC/60Hz | Yes | Vrms | Normal Operation |
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Europe | Yes | Vrms | Normal Operation |
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Parameter | Specification | Unit | QA Test Limits | Conditions | Notes |
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Amp Section |
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Type (Class AB, D, other) | AB | AB | n/a | 120V model | External Sink required for Class AB |
Type (Class AB, D, other) | G | G | n/a | 230V Model |
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| Impedance used for electrical |
Rated Load Impedance | 4 | Ohms | n/a | Nominal | measurements |
System average impedance | 8.79 | Ohms | n/a | Average impedance from 10 to 500Hz |
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Voice coil DCR | 4.35 | Ohms | n/a |
| Reference |
Rated Output Power | 100 | Watts | 95 | Single input driven |
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THD@ Rated Power | 0.5 | % | 1 | 22K filter |
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THD @ 1 Watt | 0.1 | % | 0.3 | 22K filter |
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DC Offset | 10 | 50 | @ Speaker Output |
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| Measured at speaker terminals, Output |
Damping factor | >100 |
| 40 |
| power 90 Watts |
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| AVG Power over the first 4 consecutive |
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| Reference |
| peaks, when tested with a burst siganl 3/20 |
Dynamic power RMS | 125 | Watts |
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Highest RMS value | 152 | Watts | Reference |
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Input Sensitivity |
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Input Frequency | 50 | Hz | 50 | Nominal Freq. |
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Line Input (L&R) | 16.5 | mVrms | ±2dB | To 1W | Single input driven, AP Zo=600 Ohms |
LFE Input | 11.7 | mVrms | ±2dB | To 1W | LFE input driven only, AP Zo=600 Ohms |
System Gain (Line input) | 41 | dB | ±1dB | G=118 | Single input driven, AP Zo=600 Ohms |
System gain (LFE input) | 44 | dB | ±1dB | G=165 | LFE input driven only, AP Zo=600 Ohms |
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Signal to Noise |
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100 | dBA | 85 | rel. to rated power | ||
85 | dBr | 80 | rel. to rated power | 22K filter | |
SNR @ | 65 | dBr | 60 | rel. to 1W Output | 22K filter |
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| Volume @max, w/ A/P Swept Bandpass |
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Residual Noise Floor | 1 | mVrms(max) | 1.5 | Measurement (Line freq.+ harmonics) |
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Input Impedance |
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Line input L&R , LFE | >10 | K ohms | n/a | Nominal |
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Filters |
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Low Pass (fixed or variable) | Variable | ±2dB | Crossover range |
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Subsonic filter (HPF) |
| Hz | ±2dB | Fixed |
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Limiter (yes/no) | YES | Functional |
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THD at Max. Output Power | <1 | % | Functional |
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Features |
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Line Level inputs (L&R) | YES |
| Functional |
| Dual RCA conenctor |
LFE Input | YES |
| Functional |
| Single input (Yellow color) |
Phase Switch (yes/no) | YES |
| Functional |
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Volume pot Taper (lin/log) | LOG |
| Functional |
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Variable crossover | YES |
| Functional |
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ATO | YES |
| Functional |
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LED indicator | YES |
| Functional |
| Located at the amplifier panel |
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Input Configuration |
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Line In (L,R) | L ,R | Functional |
| RCA inputs: L , R Summed to Mono | |
Line level in LFE | LFE |
| Functional |
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Signal Sensing (ATO) |
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YES | Functional |
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ATO Level @ 50 Hz | 1 | mV | Functional | One input driven |
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ATO Level @ 1 KHz | 1 | mV | Functional | One input driven |
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| Amp connected and AC on, then input |
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ATO | 5 | ms | Functional | signal applied |
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Auto Mute/ | 10 | minutes | Functional | T before muting, after signal is removed | Auto turn of time (T) must be 5 > T <15 |
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Power on Delay time | 3 | sec. | Functional | AC Power Applied |
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Transients/Pops |
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ATO Transient | 5 | 10 | @ Speaker Outputs |
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50 | 100 | @ Speaker Outputs | AC Line cycled from OFF to ON | ||
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