KEF KC92 vs Power Sound Audio S1512
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Choosing between the KEF KC92 and Power Sound Audio S1512? Both compete in the Subwoofer segment. Here’s how they compare across the specs that matter most for your home theater.
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Looking at overall performance dimensions: The KEF KC92 scores higher in audio quality, volume/SPL, form factor, room fit. The Power Sound Audio S1512 leads in value.
Key subwoofer differences include the KEF KC92 digs deeper at 11 Hz (-3dB) vs 19 Hz. A lower number means deeper bass — the rumble in explosions, the weight of a pipe organ. Below 20 Hz you feel it more than hear it.
The KEF KC92 holds an advantage across more performance dimensions, but the Power Sound Audio S1512 may still be the better pick depending on which specs matter most to your setup. See the detailed comparison table below for the full breakdown.
For most home theaters, the KEF KC92 is the stronger choice — it leads in 4 of 5 scored dimensions. The Power Sound Audio S1512 makes more sense if you prioritize the 1 dimension where it leads.
Performance Overview
Scores based on specs and category benchmarks (0–100 scale)
KEF KC92
Power Sound Audio S1512
Detailed Specifications
| Specification | ||
|---|---|---|
| Price | N/A | N/A |
| Driver Size | — | 15" |
| RMS Watts | 1000W | 960W |
| -3dB Extension | 11Hz | 19Hz |
| -6dB Extension | — | — |
| Phase Control | No | No |
| LFE Input | Yes | No |
| Line Input | No | Yes |
| XLR Input | No | Yes |
| App Control | No | No |
| Passive | No | No |
| Enclosure | sealed | sealed |
Key Differences
- -3dB Extension: KEF KC92 at 11Hz vs Power Sound Audio S1512 at 19Hz. A lower number means deeper bass — the rumble in explosions, the weight of a pipe organ. Below 20 Hz you feel it more than hear it.
- RMS Watts: KEF KC92 at 1000W vs Power Sound Audio S1512 at 960W. More sustained power means the sub maintains authority at high volumes without compression. RMS matters more than peak — it's the power available all the time, not just in bursts.
- Driver Size: KEF KC92 at — vs Power Sound Audio S1512 at 15". Larger drivers move more air, producing deeper bass with less effort. A 15-inch driver reaches lower than a 10-inch at the same power, but the cabinet is proportionally larger.
- LFE Input: KEF KC92 at Yes vs Power Sound Audio S1512 at No
- Line Input: KEF KC92 at No vs Power Sound Audio S1512 at Yes
Which Should You Choose?
Choose KEF KC92 if you want:
- + better rms watts — more sustained power means the sub maintains authority at high volumes without compression
- + better -3db extension — a lower number means deeper bass — the rumble in explosions, the weight of a pipe organ
See Where These Rank
Check our editorial rankings to see how KEF KC92 and Power Sound Audio S1512 compare to the rest of the field.
Best Subwoofer RankingsRelated Calculators
Specifications sourced from manufacturer datasheets and verified against retailer listings. Prices updated hourly from authorized retailers. Scoring uses our open methodology — products are never ranked, promoted, or suppressed based on affiliate commission rates.
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