Primus PS312 - Subwoofer INFINITY - Free user manual and instructions
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| Product Type | Powered Subwoofer |
| Brand | Infinity |
| Model | Primus PS312 |
| Driver Size | 12 inches |
| Amplifier Power (RMS) | 250 Watts |
| Peak Power | 500 Watts |
| Frequency Response | 25 Hz - 150 Hz |
| Impedance | 8 Ohms |
| Enclosure Type | Bass-Reflex (Porte) |
| Dimensions (H x W x D) | 18.5 x 15.7 x 18.5 inches (470 x 400 x 470 mm) |
| Weight | 42 lbs (19 kg) |
| Inputs | Line-Level RCA (L/R), LFE RCA |
| Outputs | None (Subwoofer only) |
| Controls | Volume, Crossover Frequency (40-150 Hz), Phase (0/180), Auto Power On/Off |
| Power Supply | 120V / 60Hz (North America), 240V / 50Hz (Europe) |
| Power Consumption (Standby) | < 0.5 W |
| Finish | Black Vinyl Wrap |
| Recommended Room Size | Medium to Large (up to 400 sq. ft.) |
| Accessories Included | Power Cord, User Manual |
| Safety Features | Thermal Protection, Short Circuit Protection |
| Maintenance | Wipe with dry cloth; do not use solvents |
| Spare Parts Availability | Contact Infinity Support or authorized service centers |
| Warranty | 2 years (North America), varies by region |
Frequently Asked Questions - Primus PS312 INFINITY
How do I connect the Primus PS312 to my receiver?
Use an RCA cable to connect the subwoofer's LFE input to your receiver's subwoofer output. If your receiver lacks a dedicated LFE output, use the left/right line-level inputs.
What should I do if the subwoofer has no sound?
Check that the power cable is plugged in and the subwoofer is turned on. Ensure the volume and crossover are set appropriately. Verify that the receiver's subwoofer output is enabled.
How do I set the crossover frequency?
Set the crossover knob to match the low-frequency limit of your main speakers (typically 80-100 Hz for most systems). For home theater with LFE, set it to the maximum or 'LFE' position.
What is the phase switch for?
The phase switch (0°/180°) adjusts the timing of the subwoofer's output to blend with your main speakers. Set it to the position that produces the strongest bass at your listening position.
Can I use the PS312 with a 2-channel stereo system?
Yes, connect the subwoofer via the line-level RCA inputs. Set the crossover to bypass your speakers' low frequencies for a cleaner sound.
Why does the subwoofer turn off automatically?
The Auto Power On/Off feature shuts off the subwoofer after several minutes of no signal. This saves energy. If it turns off unexpectedly, check for weak signal from your receiver.
How do I clean and maintain the subwoofer?
Use a soft, dry cloth to wipe the cabinet. Avoid liquids or abrasive cleaners. Periodically check that the ports and grille are free of dust.
What does the 'Protect' light mean?
If the subwoofer's Protect light illuminates, it indicates a fault such as overheating or short circuit. Turn off the unit, let it cool for 30 minutes, and check connections.
Can I replace the fuse myself?
Yes, but only if you are experienced. Unplug the unit, locate the fuse holder near the power cord, and replace with the same type and rating. If unsure, contact a technician.
Where can I find spare parts or service?
Contact Infinity customer support or visit an authorized service center. Have your model number (PS312) and serial number ready.
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USER MANUAL Primus PS312 INFINITY
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Product information
Brand : INFINITY
Model : Primus PS312
Category : Subwoofer