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Car Audio
PowerBass
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PowerBass S-6903 6"x9" Coaxial Speakers

Sale price $59.99 Regular price $69.99
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Key features

  • Speaker size: 6×9″
  • RMS power per speaker: 70 W
  • Speaker impedance: 4.0 ohms
  • Frequency response: 45 Hz - 20 kHz
  • Sensitivity (1 W / 1 m): 90 dB
  • Mounting depth: 3.3 in


Description

Product Overview

The PowerBass S-6903 6x9 coaxial speakers bring integrated midrange and high-frequency drivers to a standard 6x9 opening. Their tri-axial design combines those drivers in one speaker system for a coherent, full-range car audio upgrade.

Key Features & Benefits

  • Tri-axial speaker system: Built-in midrange and high-frequency drivers provide three-way sound from a single 6x9 frame.
  • Paper DDC cone and silk dome tweeter: The DDC-coated cone and silk dome pair controlled bass with smooth highs.
  • Treated foam surround: The double-pressed surround supports cone alignment and dynamic movement.
  • Motor and magnet structure: A 10 oz motor structure and 20 oz magnet support flux control and transient response.
  • Shallow mounting depth: The 3.3-inch depth can help with installation in tighter spaces.
  • Integrated driver details: A 2-inch PEI dome midrange and 0.75-inch tweeter ring with Sound Expander Lens help expand sound coverage.

Technical Specifications

Speaker system 6x9" Tri-Axial Speaker System
Design OEM drop-in replacement for standard 6x9 openings; no modification
Cone and tweeter 2-layer Paper DDC Cone / Silk Dome Tweeter
Surround Double Pressed Treated Foam Surround
Motor structure 10 oz; EFF Motor Structures (Efficient Flux Field)
Magnet size 20 oz
Basket Rigid Tooled Basket With Flat Black Finish
Midrange and tweeter 2" PEI Dome Mid-range and 0.75” Tweeter Ring (Sound Expander Lens)
Mounting depth 3.3 in
Nominal impedance 4 ohms
Sensitivity (1W/1M) 90 dB
Frequency response 45 Hz - 20 kHz
Power handling (RMS/Peak) 70 / 210 watts

Why Choose This Product?

The S-6903 is designed for upgrading factory 6x9 setups when you want integrated midrange and high-frequency reproduction in one speaker system. Its stated frequency response spans 45 Hz to 20 kHz, while 90 dB sensitivity and 4-ohm nominal impedance provide useful figures to compare with your audio system.

The rigid, flat-black basket and EFF motor structure are part of its design. Together with the shallow mounting depth, these details make the S-6903 a practical option to consider for a space-conscious 6x9 replacement.

Installation & Compatibility Notes

The S-6903 is described as an OEM drop-in replacement for standard 6x9 openings, with no modification. Before purchase, check your opening and available clearance against its 3.3-inch mounting depth.

Its nominal impedance is 4 ohms. Confirm that your head unit or amplifier supports this load and is suitable for the speaker’s 70-watt RMS power handling.

Frequently Asked Questions

What do the 70 / 210-watt ratings mean?

The ratings are 70 watts RMS and 210 watts peak. Use the RMS figure when comparing continuous power handling with your audio equipment.

What is the frequency response of the S-6903?

Its listed frequency response is 45 Hz - 20 kHz.

Does this speaker include separate midrange and high-frequency drivers?

The tri-axial system integrates a midrange and tweeter in the 6x9 frame. The listed driver details are a 2-inch PEI dome midrange and a 0.75-inch tweeter ring.

What should I check for fitment?

Check that your vehicle has a standard 6x9 opening and enough clearance for the 3.3-inch mounting depth.

Explore More

Want to learn more about PowerBass? Explore our PowerBass brand profile.

Need an amplifier to run these speakers?

Compare car-audio amplifiers by channel count. Ratings shown at 4 Ω. Check your speakers’ impedance and RMS power before choosing an amplifier.

2-Channel Amplifiers

50–125W RMS per channel at 4 Ω

4-Channel Amplifiers

50–125W RMS per channel at 4 Ω

6-Channel Amplifiers

Actual 4 Ω ratings shown for each amplifier

8-Channel Amplifiers

Actual 4 Ω ratings shown for each amplifier

Product Details