SS8P vs Rockville RWS10CA Slim 10″ Amplified Powered Car Subwoofer Enclosure
Buy the SS8P if space is tight or you want a proven under-seat unit: it is a 2.8-inch-thick 8-inch powered sub with a 100W RMS amp, high-level inputs and a remote bass knob. The RWS10CA is the bigger 10-inch option with far more claimed peak power (1000W), but it needs 24 x 7 x 15 inches of room and its RMS figure is not published. The SS8P's lowest recent price was $86.35 on October 29, 2026, against a high of $99.95 on October 30, 2026; no price was given for the RWS10CA.
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SS8P
4.8Choose the SS8P if you want bass that fits under a seat, works with a factory stereo through high-level inputs, and costs under $100 at its recent low.
- Fits under most seats at 2.8 inches thick.
- 100W RMS is a real, stated figure, not just peak.
- High-level inputs let it work with a factory head unit.
- Remote bass knob included for dash adjustment.
- Rated 4.8 out of 5 from 61 ratings.
- Only 8 inches, so output is modest.
- Bass can peak around 150Hz depending on where it is mounted.
- May not fit under low seats such as a Miata.
- Some installs need an extra amp kit and harness.
What separates them
| SS8P | Rockville RWS10CA Slim 10″ Amplified Powered Car Subwoofer Enclosure | |
|---|---|---|
| Driver size | 8 inches | 10 inches |
| Peak power | 400W | 1000W |
| RMS power | 100W RMS | Not published |
| Footprint | 2.8 in thick, 8.3 in wide, under-seat mount | 24 x 7 x 15 in enclosure |
| Frequency response | 20–150Hz | 43Hz–500Hz |
| Low-pass filter | Adjustable 50–150Hz | Not published |
| Bass boost | 0–12dB at 45Hz | Not published |
| Inputs | RCA and high-level |
Price history
- SS8P: lowest $86.35 on Oct 29 at Amazon; $99.95 on Nov 2.
- Rockville RWS10CA Slim 10″ Amplified Powered Car Subwoofer Enclosure: lowest $34.95 on Oct 29 at Rockville Audio.
Prices at every store
SS8P
- RockvilleCheck price at Rockville
- Audio SavingsCheck price at Audio Savings
- eBayCheck price at eBay
Rockville RWS10CA Slim 10″ Amplified Powered Car Subwoofer Enclosure
- WalmartCheck price at Walmart
- Rockville AudioCheck price at Rockville Audio
Specs compared
| Spec | SS8P | Rockville RWS10CA Slim 10″ Amplified Powered Car Subwoofer Enclosure |
|---|---|---|
| Impedance | 4 Ohms | 4-ohms |
| Frequency response | 20–150Hz | 43Hz-500Hz |
| Speaker Type | Subwoofer | Subwoofer |
| Driver size | 8 Inches | — |
| Peak power | 400 Watts | — |
| RMS power | 100W RMS | — |
| Enclosure thickness | 2.8" | — |
| Connectivity | RCA | — |
| Low-pass filter | 50Hz–150Hz | — |
| Bass boost | 0–12dB @45Hz | — |
What reviewers say
SS8P
Rated 4.8 out of 5 from 61 ratings, the SS8P is well received for its size and price. Owners say it delivers deeper, cleaner bass than expected and fits neatly under seats. Complaints center on fitment in tight cars and on bass peaking near 150Hz depending on where it is mounted.
- Sound quality and clarity for the size and price
- Slim design fits securely under most seats
- Easy installation
- Sturdy cast aluminum build, not cheap plastic
- Bass can peak around 150Hz depending on mounting location
- May not fit under some seats, such as a Miata
- Installation may need an additional amp install kit and harness
Questions and answers
- Which is better for tight spaces?
- The SS8P. At 2.8 inches thick it mounts under a seat, while the RWS10CA needs a 24 x 7 x 15 inch footprint in the trunk or cargo area.
- Does the RWS10CA really make more bass?
- It has a larger 10-inch driver and a 1000W peak rating, so it can move more air. The SS8P's 100W RMS is the only continuous figure published for either, so compare RMS, not peak, when judging real output.
- Is the SS8P worth it at its recent price?
- At $86.35, its lowest price on October 29, 2026, it is a low-cost way to add bass without losing space. At $99.95 on October 30, 2026 it is still cheap for a powered enclosure with high-level inputs.
- Which works with a factory stereo?
- The SS8P lists high-level inputs, so it can tap factory speaker wiring without preamp outputs. The RWS10CA's input options are not published.
- Which is easier to install?
- The SS8P is designed for simple under-seat installs with included power and signal cables, though some cars need an extra amp kit. The RWS10CA needs room for a full-size enclosure.
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