Klipsch SPL-120 12-inch Black
Score: 84/100
Sonos Sub 4
Score: 86/100Rankings
The Sonos Sub 4 is a wireless subwoofer with dual inward-facing 5"×8" drivers delivering deep 25 Hz bass and automatic Trueplay tuning. Its Wi-Fi-only connectivity and substantial weight can limit flexibility for non-Sonos setups. Ideal for Sonos ecosystem owners seeking powerful bass in medium-to-large rooms.
The Klipsch SPL-120 is a 12-inch powered subwoofer that delivers tight, room-filling bass with up to 118 dB output, thanks to its 300 W RMS Class D amplifier. Its compact front-firing design limits bass extension below 24 Hz and requires careful placement. Ideal for medium-sized rooms and users seeking high output without a large footprint.
| Attribute | | |
|---|---|---|
300 Wbest | — | |
— | 25 Hzbest | |
600 Wbest | — | |
12 inbest | 5 in | |
12 inbest | — | |
| ↓ lower better | 45 lb | 26.46 lbbest |
350 sqftbest | — | |
17.75 inbest | 15.83 in |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Audio(2) | ||
Frequency Response (Hz) | 24-125 Hz | 25 Hz |
Driver Size (in) | 12 in | 5 in |
Connectivity(2) | ||
Input Type | dual RCA/LFE | WiFi |
Wireless Capability | false | true |
Build & Design(5) | ||
Enclosure Type | front-firing slot port | Ported |
Weight (lb) | 45.0 lb | 26.46 lb |
Height (in) | 17.75 in | 15.83 in |
Width (in) | 14.7 in | 15.31 in |
Depth (in) | 19.77 in | 6.22 in |
Products in the top-left offer the best value (high score, low price).
Professional reviewers commend the SPL-120 for its impressive 118 dB output, tight low-frequency response down to 24 Hz, and efficient Class D amplification that stays cool. They highlight the front-firing slot port and Cerametallic woofer as delivering clean, musical bass, and appreciate its compact size for corner placement. However, they note it falls short of the deeper output and refinement of larger 15-inch Klipsch models and the KEF KUBE 12B, and it may need careful crossover and positioning to avoid muffled bass.
Everyday users praise the SPL-120 for its powerful, room-shaking bass that remains tight and distortion-free, its easy integration with existing AV gear, and its attractive, durable finish. Common themes include appreciation for its compact footprint and efficient operation. Recurring complaints focus on the need for precise room placement and the limited sub-24 Hz extension, which some users find insufficient for extreme low-frequency effects.
Professional reviewers highlight the Sub 4's deep 25 Hz low-frequency response with force-canceling dual woofers, automatic Trueplay room-acoustic tuning and app-adjustable EQ deliver optimized bass for any space. Flexible placement allows vertical or horizontal orientation, even under furniture, for hidden installs.
