
JBL LSR310S
Score: 82/100
Rockville Rock Shaker 12
Score: 77/100Rankings

The JBL LSR310S is a 10-inch powered studio subwoofer with a 200 W Class D amp, Slip Stream Port and multiple crossover options, delivering precise low-end for professional monitoring. Its down-firing design and lack of onboard EQ limit placement and fine-tuning flexibility. Best suited for studio engineers who need accurate bass and balanced inputs.

The Rockville Rock Shaker 12 is a 12-inch powered subwoofer offering 800 W peak power and versatile connectivity for small-to-medium rooms. Its bass extension can be limited and the cabinet size may restrict output in larger spaces. Best suited for budget-conscious home-theater users who need strong impact without complex setup.
| Attribute | ![]() | ![]() |
|---|---|---|
200 W | 400 Wbest | |
— | 800 Wbest | |
9.84 inbest | — | |
— | 12 inbest | |
— | 4 Ωbest | |
| ↓ lower better | 34.392 lbbest | 43 lb |
15 inbest | 14.6 in | |
15.66 in | 18.3 inbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Power & Consumption(1) | ||
Amplifier Power (RMS) (W) | 200 W | 400 W |
Audio(1) | ||
Frequency Response (Hz) | 27-80 Hz | 20-200 Hz |
Connectivity(1) | ||
Input Type | XLR, TRS | RCA, high-level |
Build & Design(5) | ||
Enclosure Type | Ported | ported, rear-firing |
Weight (lb) | 34.392 lb | 43.0 lb |
Height (in) | 15.0 in | 14.6 in |
Width (in) | 15.66 in | 18.3 in |
Depth (in) | 17.64 in | 18.9 in |


Products in the top-left offer the best value (high score, low price).

Professional reviewers emphasize the LSR310S's engineering excellence, highlighting the Slip Stream Port and 200 W Class D amp that deliver deep, low-distortion bass down to 20 Hz with 113 dB SPL. They praise its flexible XLF mode and multiple crossover settings for studio versatility, especially when paired with JBL LSR305/308 monitors.
While direct consumer reviews are scarce, inferred feedback suggests users value the subwoofer's deep bass response and easy, plug-and-play connectivity, with no major complaints surfacing in the available sources.

Professional sources describe the Rock Shaker 12 as a powerful, efficient subwoofer that provides deep, resonant bass with low distortion, thanks to its Class D amp and robust MDF enclosure. Reviewers appreciate the adjustable crossover and versatile connectivity, positioning it as a solid entry-level choice for home-theater and music setups.