









Get full‑range bass + crisp highs from a single ultra‑slim box.
Unlike ordinary under‑seat subwoofers that only produce low frequencies, this 10" powered subwoofer system includes a built‑in tweeter – giving you deep, punchy bass and detailed, clear treble. All in a footprint so small it slides right under most front seats.
The speaker system comes with a dedicated subwoofer for strong low end plus high‑frequency drivers. Enjoy deep bass and clear treble from one compact unit – no need for separate component speakers.
Peak Power: 1200 W
Distortion: <0.4% – clean, accurate sound
Signal‑to‑Noise Ratio: >90% (typically >90dB)
Built‑in Amplifier – no extra amp required
Low‑Pass Filter – adjust cutoff frequency
Bass & Treble controls – fine‑tune your sound
Engineered for long‑term use with:
Overheat Protection
Short Circuit Protection
Fuse Protection
Seamlessly aligns with your cabin geometry – secure, discreet, and unobtrusive. You’ll feel the bass, not see the box.
Distinct signal paths and tidy cabling connections at a glance
Equipped with high‑level input (speaker wire) and low‑level input (RCA)
Simple installation – works with factory or aftermarket radios
| Feature | Detail |
|---|---|
| Type | Powered under‑seat subwoofer system |
| Woofer Size | 10 inches |
| Tweeter | Built‑in high‑frequency driver |
| Peak Power | 1200 W |
| RMS Power | Not specified (suggest “~200‑300W typical”) |
| Distortion | <0.4% |
| Signal‑to‑Noise Ratio | >90% |
| Built‑in Amplifier | Yes |
| Low Pass Filter | Yes (adjustable) |
| Bass Control | Yes |
| Treble Control | Yes |
| Inputs | High‑level & Low‑level (RCA) |
| Protection Features | Overheat, Short Circuit, Fuse |
| Installation | Under front seat – zero footprint, slim design |
| Vehicle Fitment | Universal (most cars, SUVs, trucks) |
10" Slim Powered Car Subwoofer (with built‑in tweeter)
High‑level input harness
Power cable kit (check actual contents; common to include)
Mounting hardware
User manual
✅ 2‑in‑1 design – subwoofer + tweeter = full frequency response
✅ Deep bass + clear treble – no more muddy sound
✅ 1200W peak power – hits hard when you need it
✅ Ultra‑slim – fits under almost any seat
✅ Plug & play – clear interfaces, easy DIY
✅ Protection circuits – safe for daily driving
Mount securely under the front seat using included hardware.
Connect high‑level inputs to factory speaker wires if your radio lacks RCA outputs.
Use low‑level (RCA) inputs for aftermarket head units.
Adjust bass & treble and low‑pass filter to match your main speakers.
The built‑in tweeter provides crisp highs – you may not need separate dash tweeters.






| Brand | Junsun |
|---|---|
| Manufacturer Part Number | SUB111 |
| Attribute | Value |
| Type | Powered Under‑Seat Subwoofer with Tweeter |
| Woofer Size | 10 in |
| Tweeter | Yes (built‑in) |
| Peak Power | 1200 W |
| RMS Power | Not specified |
| Distortion | <0.4% |
| Signal to Noise Ratio | >90% |
| Built‑in Amplifier | Yes |
| Low Pass Filter | Yes |
| Bass Control | Yes |
| Treble Control | Yes |
| Input Type | High‑level & Low‑level (RCA) |
| Features | Overheat Protection, Short Circuit Protection, Fuse Protection |
| Enclosure Material | Not specified |
| Height | Slim |
| Vehicle Fitment | Universal (fits most cars, SUVs, trucks) |
| Installation Location | Under front seat |

