

Pioneer TS-A250S4 Sub 10" 25cm Singal Voice Coil Subwoofer 400w RMS
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TS-A250S4
25 cm 4Ω enclosure-type single voice coil subwoofer (1300W)
Upgrade your sound with powerful bass.
A solid 10-inch subwoofer built for enclosure use, delivering deep, controlled bass to complement your existing car audio setup.
The TS-A250S4 is part of Pioneer's A-series range, designed to work alongside A-series speakers for a matched system upgrade. With 400W RMS handling and a single 4Ω voice coil, it pairs well with Pioneer's GM-A series amplifiers for clean, powerful bass at any volume.
Carefully chosen materials keep distortion low and bass response tight, making this a straightforward upgrade over a factory subwoofer.
- Enjoy outstanding midbass response with the Injection Molded Polypropylene Cone
Explore the full range in Pioneer.
Specification
| Impedance | 4 Ω |
|---|---|
More specs
| |
What's Included
- Pioneer TS-A250S4
Pioneer
About the Pioneer TS-A250S4
From our tech experts at CEN
A 10 inch subwoofer, handling 400w RMS.
Who it suits
Drivers adding low end to a system, with an enclosure sized to suit the driver.
Our tech experts advise
A subwoofer is only as good as its enclosure and the amplifier behind it. We build enclosures and match amplification at our Beeston workshop. Installation is priced per vehicle, so get in touch with your make, model and year and we will confirm what it needs. See car audio installation.
Explore the full Pioneer range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all Pioneer
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Frequently Asked Questions
Q: Do I need an amplifier for this subwoofer?
A: Yes, unless it is an active (powered) subwoofer with a built-in amplifier. Passive subwoofers need an external amplifier matched to the RMS power and impedance shown in the Specification tab.
Q: What size enclosure does this subwoofer need?
A: The recommended enclosure volume is listed in the Specification tab where the manufacturer provides it. As a rule, sealed enclosures give tighter, more accurate bass while ported enclosures deliver more output. Contact CEN if you would like a recommendation for your build.
Q: What does RMS power mean?
A: RMS is the continuous power a subwoofer can handle, and it is the number that matters when matching an amplifier. Peak or max figures describe short bursts only. Match your amplifier output to the RMS rating in the Specification tab.
Q: Sealed or ported enclosure - which should I choose?
A: Sealed boxes are compact and produce tight, controlled bass suited to sound quality builds. Ported boxes are larger and produce more output at low frequencies, suited to those who want maximum impact. Either works well when built to the recommended volume.
Q: Can CEN build or supply an enclosure and fit everything?
A: Yes. CEN supplies enclosures and offers professional installation from our Nottingham premises, including amplifier wiring. Contact us to discuss your build.



































