NERO DUAL X8 - Subwoofer OSD Audio - Free user manual and instructions
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| Product Type | Powered Subwoofer |
| Brand | OSD Audio |
| Model | NERO DUAL X8 |
| Drivers | Dual 8-inch woofers |
| Amplification | Built-in Class-D amplifier |
| RMS Power | 200 Watts |
| Peak Power | 400 Watts |
| Frequency Response | 30 Hz - 200 Hz |
| Impedance | 4 ohms (line-level input) |
| Inputs | LFE RCA, line-level RCA, speaker-level binding posts |
| Controls | Volume, crossover frequency (40-200 Hz), phase switch (0/180°), auto on/off |
| Enclosure Material | MDF with black textured finish |
| Dimensions (H x W x D) | 18 x 15 x 15 inches |
| Weight | 40 lbs |
| Power Supply | 110-240V AC, 50/60 Hz |
| Power Consumption | 300W max |
| Protection | Short circuit, thermal, overcurrent |
| Accessories Included | Power cord, user manual, grille (optional) |
| Usage | Home theater and music systems |
| Maintenance | Wipe with dry cloth; avoid liquids and moisture; keep vents clear |
| Safety | Do not expose to rain; disconnect when not in use; keep away from heat sources |
| Spare Parts / Repairability | Contact OSD Audio for service; no user-serviceable parts inside |
Frequently Asked Questions - NERO DUAL X8 OSD Audio
How do I connect the subwoofer to my receiver?
Use an RCA cable to connect the subwoofer's LFE input to your receiver's subwoofer pre-out. Alternatively, use speaker-level inputs if your receiver lacks a dedicated sub out.
What is the best placement for the subwoofer?
Place the subwoofer in a corner or along a wall for maximum bass output. Avoid placing it in the center of the room. Experiment with different positions to find the best frequency response.
Why is there no sound coming from the subwoofer?
Check that the subwoofer is powered on, the volume is turned up, and the auto on/off switch is not in 'off' position. Verify connections and ensure your receiver is sending a signal. Try a different source.
Why is my subwoofer producing a humming noise?
Humming is often due to a ground loop. Connect all audio components to the same power strip. Use a ground loop isolator on the RCA cable if needed. Ensure cables are not tangled with power cords.
How do I set the crossover frequency?
Set the crossover frequency on the subwoofer to match your main speakers' low-frequency limit. A common setting is 80 Hz for home theater. Adjust to taste, but avoid overlapping with the main speakers.
What does the phase switch do?
The phase switch (0° or 180°) adjusts timing between the subwoofer and main speakers. Set to the position that gives the loudest, tightest bass at your listening position. Play a test tone and switch to compare.
Why does the subwoofer turn off automatically?
The subwoofer has an auto on/off feature to save power. If the signal is too low, it may shut off after a few minutes. Increase the subwoofer volume or disable auto off if the issue persists.
How should I clean my subwoofer?
Unplug the subwoofer. Use a soft, dry cloth to wipe the exterior. Do not use liquid cleaners or spray directly. Clean the grille with a vacuum on low suction if needed.
Can I use this subwoofer outdoors?
No, the NERO DUAL X8 is designed for indoor use only. Exposure to moisture or extreme temperatures can damage the electronics and drivers. Keep it in a dry, climate-controlled environment.
What is the warranty period?
OSD Audio typically offers a 5-year warranty on the drivers and a 2-year warranty on the amplifier. However, confirm with your dealer or OSD Audio support for exact terms and registration requirements.
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USER MANUAL NERO DUAL X8 OSD Audio
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Product information
Brand : OSD Audio
Model : NERO DUAL X8
Category : Subwoofer