SoundXtreme ST-403

SoundXtreme ST-403 4-Inch 3-Way 220W Coaxial Car Speakers Instruction Manual

Introduction

This manual provides detailed instructions for the installation, operation, maintenance, and troubleshooting of your SoundXtreme ST-403 4-inch 3-way 220-watt coaxial car speakers. Please read this manual thoroughly before installation and use to ensure optimal performance and longevity of your speakers.

SoundXtreme ST-403 4-inch 3-way coaxial car speaker with grille

Figure 1: Front view of the SoundXtreme ST-403 speaker with its protective grille.

Setup and Installation

Proper installation is crucial for the performance of your SoundXtreme ST-403 speakers. These speakers are designed for in-car audio systems and are compatible with various car types. The package includes two speakers, speaker wire, and mounting screws.

Mounting Considerations

  • The speakers have a diameter of 4 inches and require a mounting depth of 2 1/4 inches. Ensure adequate space in your vehicle's speaker locations.
  • The anti-resonant stamped steel basket design helps improve sound performance and stability.
  • The magnet size is 2 5/8 inches. Verify clearance behind the mounting surface.
SoundXtreme ST-403 speaker dimensions showing 4-inch diameter and 2 1/4-inch mounting depth

Figure 2: Detailed dimensions of the ST-403 speaker for installation planning.

Wiring Connections

The ST-403 speakers feature spade speaker terminals for straightforward wiring. Connect the included speaker wires to the appropriate terminals on the speaker and your car's audio system, ensuring correct polarity (positive to positive, negative to negative).

Side view of SoundXtreme ST-403 speaker without grille, showing spade terminals

Figure 3: Side view of the speaker, highlighting the spade terminals for wiring connections.

Mounting the Speakers

  1. Carefully place the speaker into the designated mounting hole.
  2. Align the speaker's mounting holes with the screw holes in your vehicle.
  3. Secure the speaker using the provided screws. Do not overtighten.
  4. Attach the speaker grille if desired, ensuring it is properly seated.
SoundXtreme ST-403 speaker with grille attached

Figure 4: The ST-403 speaker with its grille, ready for installation.

Operating Instructions

The SoundXtreme ST-403 speakers are designed to deliver clear and dynamic audio within your car's sound system. These are 3-way coaxial speakers, meaning they integrate a woofer, midrange, and tweeter into a single unit for a full-range sound experience.

Power and Audio Output

  • The speakers have a peak power handling of 220 watts (110 watts per speaker) and an impedance of 4 ohms. Ensure your amplifier or head unit is compatible with these specifications.
  • With a sensitivity of 88dB, these speakers efficiently convert power into sound.
  • The frequency response ranges from 100 Hz to 20 kHz, providing a broad spectrum of sound reproduction.
  • The audio output mode is surround, enhancing the immersive listening experience in your vehicle.
Back of SoundXtreme ST-403 speaker showing model number and power specifications

Figure 5: Rear view of the speaker, displaying key specifications like model number and power rating.

Sound Adjustment

Adjust the bass, treble, and balance settings on your car's head unit or amplifier to customize the sound to your preference. Avoid excessively high volume levels for prolonged periods to prevent speaker damage.

Maintenance

Regular maintenance helps preserve the sound quality and lifespan of your speakers.

  • Cleaning: Use a soft, dry cloth to gently wipe the speaker grilles and cones. Avoid using harsh chemicals or abrasive materials that could damage the speaker components.
  • Environmental Protection: The speakers feature a moisture-resistant rubber surround and are designed to withstand tough conditions, including high temperatures. However, prolonged exposure to extreme moisture or direct sunlight should be minimized to ensure optimal performance.
  • Inspection: Periodically check the speaker connections to ensure they are secure and free from corrosion.

Troubleshooting

If you encounter issues with your SoundXtreme ST-403 speakers, refer to the following common troubleshooting steps:

  • No Sound:
    • Verify that all speaker wires are securely connected to both the speakers and the audio source (head unit/amplifier).
    • Check the audio source for proper operation and volume settings.
    • Ensure the amplifier (if used) is powered on and functioning correctly.
  • Distorted Sound:
    • Reduce the volume level on your audio source. Overdriving the speakers can cause distortion.
    • Check for loose connections or damaged speaker wires.
    • Ensure the impedance of the speakers (4 ohms) is compatible with your amplifier.
    • Inspect the speaker cones for any physical damage.
  • Intermittent Sound:
    • Examine all wiring for loose connections or frayed wires.
    • Check for any short circuits in the wiring.

Specifications

The following table outlines the technical specifications for the SoundXtreme ST-403 4-inch 3-way coaxial car speakers:

FeatureSpecification
Model NumberST-403
Speaker Size4 Inches
Speaker Type3-Way Coaxial
Peak Power Handling220 Watts (Total for Pair)
Impedance4 Ohms
Sensitivity88 dB
Frequency Response100 Hz - 20 kHz
Mounting Depth2 1/4 Inches
Woofer Cone MaterialInjection Cone, Alpha Cellulose
Surround MaterialMoisture Resistant Rubber
Midrange and Tweeter30 mm PEI Dome Tweeter
Magnet Weight5.3 oz
Voice Coil20 mm
Weight (per pair)2.3 Pounds
Connectivity TechnologyCoaxial, Wired
Compatible Vehicle TypeCar

Warranty Information

The SoundXtreme ST-403 speakers come with a limited warranty. For specific details regarding the warranty period, coverage, and terms, please refer to the warranty card included with your purchase or contact SoundXtreme customer support directly. Keep your proof of purchase for warranty claims.

Customer Support

If you require further assistance with installation, operation, or troubleshooting that is not covered in this manual, please contact SoundXtreme customer support. You can typically find contact information on the product packaging or the official SoundXtreme website.

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