Sound Town METIS-18PWG 18-inch Powered Subwoofer Instruction Manual

1. Introduction

This manual provides essential information for the safe and efficient operation of your Sound Town METIS-18PWG 18-inch Powered Subwoofer. Please read these instructions thoroughly before use and retain them for future reference.

The METIS-18PWG is a high-performance 18-inch powered subwoofer designed to deliver powerful and clear low-frequency sound. It features a Class-D amplifier, a 4-inch voice coil, and versatile input/output connections, making it suitable for various audio setups.

Figure 1: Front view of the Sound Town METIS-18PWG 18-inch Powered Subwoofer.

2. Important Safety Instructions

To reduce the risk of electric shock, do not remove the cover or back. No user-serviceable parts are inside. Refer servicing to qualified service personnel.

• Read all instructions before operating the product.
• Retain these instructions for future reference.
• Heed all warnings on the product and in the operating instructions.
• Follow all instructions.
• Do not use this apparatus near water.
• Clean only with a dry cloth.
• Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
• Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
• Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding-type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
• Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
• Only use attachments/accessories specified by the manufacturer.
• Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
• Unplug this apparatus during lightning storms or when unused for long periods of time.
• Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

3. Package Contents

The Sound Town METIS-18PWG package includes:

• 1 x Sound Town METIS-18PWG 18-inch Powered Subwoofer Unit
• Power Cable
• User Manual (this document)

4. Product Overview

The METIS-18PWG subwoofer is engineered for robust performance and durability. Key features include:

• Massive Power: Equipped with a built-in Class-D amplifier, delivering 700 Watts RMS / 1400 Watts Program / 2400 Watts (8-ohm) Peak Power for powerful bass.
• High-Quality Components: Features an 18-inch subwoofer with a 4-inch voice coil.
• Durable Construction: Constructed with 5/8-inch birch plywood front and rear panels, a black carpet finish, heavy-duty metal grille, and reinforced corners.
• Portability: Includes two recessed ergonomic handles for easy transport.
• Pole Mount Socket: A 35mm pole mount socket is integrated for accommodating a satellite speaker.

4.1 Rear Panel Controls and Connections

The rear panel provides all necessary inputs, outputs, and controls for integrating the subwoofer into your audio system.

Figure 2: Detailed view of the rear panel showing inputs, outputs, and master controls.

• Inputs: Two XLR-1/4" combo inputs (Left/Right) and two RCA inputs (Left/Right) for versatile connection to various audio sources.
• Outputs: Two through XLR outputs (Left/Right) for passing the full-range signal to other speakers, and two 100Hz high-pass XLR outputs (Left/Right) for connecting to satellite speakers. Two RCA outputs are also available.
• Phase Switch: Allows adjustment of the subwoofer's phase (0° or 180°) to optimize alignment with other speakers.
• Volume Control: Adjusts the overall output level of the subwoofer.
• Low Pass Filter (LPF): A variable control (40Hz - 160Hz) to set the upper frequency limit of the subwoofer, ensuring smooth integration with full-range speakers.
• Indicators: LED indicators for Power, Signal, and Clip status.
• AC Input: Power connection with voltage selector (115V/230V) and power switch.

5. Setup

Follow these steps to set up your Sound Town METIS-18PWG subwoofer:

1. Placement: Position the subwoofer in a stable location. Consider room acoustics and desired bass response. The integrated 35mm pole mount socket allows for mounting a satellite speaker directly above the subwoofer.
2. Power Connection: Ensure the voltage selector on the rear panel matches your local power supply (115V or 230V). Connect the provided power cable to the AC input on the subwoofer and then to a grounded power outlet. Ensure the power switch is in the OFF position before connecting.
3. Audio Input Connection:
   • From Mixer/Audio Source: Connect the main outputs of your mixer or audio source to the XLR-1/4" combo inputs or RCA inputs on the subwoofer.
   • To Satellite Speakers (Full-Range): If using satellite speakers, connect the XLR through outputs of the subwoofer to the inputs of your full-range speakers. This passes the full audio signal.
   • To Satellite Speakers (High-Pass): For systems where satellite speakers handle frequencies above 100Hz, connect the 100Hz high-pass XLR outputs of the subwoofer to the inputs of your satellite speakers.
4. Initial Settings: Before powering on, set the Volume control to its minimum position. Set the Low Pass Filter (LPF) to a starting point, typically around 80Hz-100Hz, and the Phase switch to 0°.

6. Operating Instructions

Once the subwoofer is set up, follow these steps for operation:

1. Power On: Turn on your mixer or audio source first, then switch on the power for the METIS-18PWG subwoofer. The Power LED should illuminate.
2. Adjust Volume: Gradually increase the Volume control on the subwoofer to achieve the desired bass level. Monitor the Signal and Clip LEDs. The Signal LED indicates an active audio signal, while the Clip LED warns of signal overload, which can cause distortion. Reduce the volume if the Clip LED illuminates frequently.
3. Low Pass Filter (LPF) Adjustment: Adjust the LPF knob to blend the subwoofer's output seamlessly with your main speakers. A lower setting (e.g., 80Hz) is typical for larger main speakers, while a higher setting (e.g., 120Hz) might be suitable for smaller satellite speakers. Experiment to find the optimal crossover point for your system.
4. Phase Adjustment: If the bass sounds weak or undefined, try flipping the Phase switch (0° to 180°). This can correct phase cancellations between the subwoofer and main speakers, resulting in a more impactful and coherent bass response. Listen for the setting that provides the strongest and clearest bass.
5. Power Off: When finished, turn off the subwoofer first, then your mixer or audio source.

7. Maintenance

Proper maintenance ensures the longevity and optimal performance of your subwoofer:

• Cleaning: Clean the exterior with a soft, dry cloth. Do not use abrasive cleaners, solvents, or waxes. Ensure ventilation openings are free from dust and debris.
• Storage: If storing the subwoofer for an extended period, ensure it is in a dry, cool environment, protected from dust and extreme temperatures.
• Inspection: Periodically check the power cord and audio cables for any signs of damage. Replace damaged cables immediately.
• Ventilation: Ensure adequate airflow around the rear panel to prevent overheating of the amplifier. Do not obstruct the fan or vents.

8. Troubleshooting

If you encounter issues with your subwoofer, refer to the following common problems and solutions:

If the problem persists after trying these solutions, please contact Sound Town customer support.

9. Specifications

Figure 3: Dimensions of the Sound Town METIS-18PWG Subwoofer.

10. Warranty and Support

This Sound Town product comes with a Limited Warranty. For specific terms and conditions, please refer to the warranty information provided with your purchase or contact Sound Town customer service.

For technical assistance, troubleshooting, or warranty claims, please contact Sound Town customer support directly. Contact information can typically be found on the official Sound Town website or on your purchase documentation.