1. Introduction
Thank you for choosing the Seismic Audio SA-155.2 Dual 15-Inch PA DJ Speaker. This speaker is designed for professional audio applications, delivering clear and powerful sound for various events. This manual provides essential information for the safe and efficient operation of your speaker.
The SA-155.2 features two 15-inch woofers, each with a 50-ounce magnet and a 2-inch voice coil, complemented by two 2x5 tweeters. It is rated for 500 Watts RMS and 1000 Watts Peak power, operating at 4 ohms impedance. The cabinet is constructed with a 5/8-inch plywood front panel and steel grills for durability.
2. Safety Information
- Power Handling: Do not exceed the rated power of 500 Watts RMS / 1000 Watts Peak to prevent damage to the speaker.
- Ventilation: Ensure adequate airflow around the speaker to prevent overheating. Do not block the dual ports.
- Placement: Place the speaker on a stable, flat surface. This speaker is designed for floor standing use and cannot be mounted on pole stands.
- Connections: Always ensure all connections are secure and correct before applying power to your audio system. Use appropriate gauge speaker wire.
- Moisture: Keep the speaker away from water or excessive moisture. This product is not waterproof.
- Hearing Protection: Prolonged exposure to high volume levels can cause permanent hearing damage. Use hearing protection when operating at high volumes.
3. Package Contents
The package for the Seismic Audio SA-155.2 Dual 15-Inch PA DJ Speaker includes:
- 1 x SA-155.2 Dual 15-Inch PA DJ Speaker Cabinet
4. Setup
- Placement: Position the speaker on a stable, level surface. Ensure it is not obstructing any pathways and has sufficient space for sound dispersion.
- Connections: Connect your amplifier or mixer to the speaker using a 1/4-inch TS (Tip/Sleeve) speaker cable. The speaker features a terminal cup with two 1/4-inch inputs.
- Daisy Chaining: If connecting multiple speakers, you can daisy chain them using the second 1/4-inch input. Ensure your amplifier can handle the combined impedance (this speaker is 4 ohms).
- Power On: Once all connections are secure, power on your amplifier and gradually increase the volume to the desired level.
Figure 4.1: Speaker dimensions. The speaker measures approximately 38 inches tall, 16 inches wide, and 12 inches deep.
Figure 4.2: Key features of the speaker cabinet, including steel grills, pocket handles, 1/4-inch inputs, 5/8-inch plywood front panel, and dual ports.
5. Operating Instructions
- Volume Control: Adjust the volume from your amplifier or mixer. Avoid pushing the speaker into distortion, which can cause damage.
- Equalization: Use your mixer's or amplifier's equalizer to fine-tune the sound. The speaker has a frequency response of 45Hz to 20KHz.
- Applications: This speaker is suitable for various applications including vocals, keyboards, DJ gigs, churches, weddings, and general PA systems.
Figure 5.1: The speaker is equipped with two 15-inch woofers, each featuring a 50-ounce magnet and a 2-inch voice coil for robust sound reproduction.
Figure 5.2: This speaker delivers 500 Watts RMS and 1000 Watts Peak power, with a frequency range of 45Hz to 20KHz, and includes two 2x5 tweeters for clear high frequencies.
Figure 5.3: The SA-155.2 speaker is suitable for a wide range of live sound applications, including studios, weddings, DJ events, and church sound systems.
6. Specifications
| Feature | Specification |
|---|---|
| Model Number | SA-155.2 |
| Speaker Type | Passive PA/DJ Speaker |
| Woofers | 2 x 15-inch, 50oz magnet, 2-inch voice coil |
| Tweeters | 2 x 2x5 inch |
| Power Rating | 500 Watts RMS / 1000 Watts Peak |
| Impedance | 4 Ohms |
| Frequency Response | 45Hz - 20KHz |
| Sensitivity | 96 dB |
| Connectivity | 2 x 1/4-inch TS Inputs (Daisy Chainable) |
| Enclosure Material | 5/8-inch Plywood Front Panel, Wood, Steel |
| Grills | Steel grills over each speaker |
| Handles | Pocket handles |
| Ports | Dual ports |
| Dimensions (H x W x D) | 38 inches x 16 inches x 12 inches |
| Weight | 51 lbs (per cabinet) |
| Color | Black |
7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the exterior of the speaker. Do not use liquid cleaners or solvents.
- Storage: Store the speaker in a dry environment, away from extreme temperatures and direct sunlight.
- Inspection: Periodically check speaker cables and connections for wear or damage.
8. Troubleshooting
- No Sound:
- Check all cable connections from the amplifier/mixer to the speaker.
- Ensure the amplifier is powered on and its volume is not at minimum.
- Verify the audio source is functioning correctly.
- Distorted Sound:
- Reduce the volume level on your amplifier or mixer. The speaker may be overdriven.
- Check for damaged cables or loose connections.
- Ensure the amplifier's output impedance matches the speaker's impedance (4 ohms).
- Intermittent Sound:
- Inspect cables for breaks or loose connectors.
- Ensure the speaker is placed on a stable surface and not subject to vibrations that could loosen connections.
9. Warranty and Support
The Seismic Audio SA-155.2 Dual 15-Inch PA DJ Speaker comes with a one-year warranty covering manufacturer defects and labor.
For technical support or warranty claims, please contact Seismic Audio customer service through their official website or the retailer where the product was purchased.
Visit the Seismic Audio Store for more information and products.