PIONEER TS-A25S4 10-inch Subwoofer – 1300W Max, Sealed or Ported Enclosures, Strong Bass

Powerful, precise bass for your car’s sound

Upgrade your ride with the Pioneer TS-A25S4 10-inch subwoofer. Built to pair with PIONEER A-series full-range speakers, it adds deep, musical bass that you can hear and feel, while keeping clarity across the midrange and highs. This passive subwoofer gives you the freedom to choose your amplifier and tailor the bass to your listening preferences.

Key design features

• 1200W max power and 350W nominal, offering ample headroom for dynamic music genres
• Glass-Fiber & Mica Reinforced IMPP cone for high rigidity and durable, accurate bass
• 4Ω single voice coil for straightforward wiring and efficient power handling
• 85 dB sensitivity ensures strong output with a suitable external amplifier
• Recommended enclosure: 1.1 cu ft vented or 0.8 cu ft sealed, for versatile installation
• 5.625-inch mounting depth enables flexible placement in many vehicles

Sound and performance in real-world use

In daily driving, this sub delivers weighty kick when the bass drops, yet remains controlled as volume climbs. Paired with an external amp, you can fine-tune the bass response to suit your music style—whether you crave tight punch or expansive lows.

Placement and installation ideas

• Passive design means you control the bass with your amplifier settings, not a built-in amp
• Compatible with both sealed and vented enclosures, allowing you to tailor bass behavior
• Ideal for upgrading factory systems or building a custom, high-fidelity setup

What to expect

Reliable, dynamic bass that supports your music without masking details in the rest of the spectrum. The TS-A25S4 emphasizes durability and consistent performance across listening scenarios.