Klipsch SPL-150 vs Power Sound Audio S1801
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Choosing between the Klipsch SPL-150 and Power Sound Audio S1801? 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 Power Sound Audio S1801 leads in value, audio quality, volume/SPL, form factor, room fit.
Key subwoofer differences include driver sizes of 15" vs 18", and ported vs sealed enclosure designs, and the Power Sound Audio S1801 digs deeper at 17 Hz (-3dB) vs 18 Hz. 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. Sealed subs are tighter and more accurate, better for music. Ported subs play louder and dig deeper for the same driver/amp, better for movies. Some subs offer both via a removable port plug. 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 Power Sound Audio S1801 holds an advantage across more performance dimensions, but the Klipsch SPL-150 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 Power Sound Audio S1801 is the stronger choice — it leads in 5 of 5 scored dimensions. The Klipsch SPL-150 makes more sense if budget is the primary constraint.
Performance Overview
Scores based on specs and category benchmarks (0–100 scale)
Klipsch SPL-150
Power Sound Audio S1801
Detailed Specifications
| Specification | ||
|---|---|---|
| Price | N/A | N/A |
| Driver Size | 15" | 18" |
| RMS Watts | 400W | 725W |
| -3dB Extension | 18Hz | 17Hz |
| -6dB Extension | — | — |
| Phase Control | Yes | No |
| LFE Input | Yes | No |
| Line Input | Yes | Yes |
| XLR Input | No | No |
| App Control | No | No |
| Passive | No | No |
| Enclosure | ported | sealed |
Key Differences
- Enclosure: Klipsch SPL-150 at ported vs Power Sound Audio S1801 at sealed. Sealed subs are tighter and more accurate, better for music. Ported subs play louder and dig deeper for the same driver/amp, better for movies. Some subs offer both via a removable port plug.
- RMS Watts: Klipsch SPL-150 at 400W vs Power Sound Audio S1801 at 725W. 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: Klipsch SPL-150 at 15" vs Power Sound Audio S1801 at 18". 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.
- -3dB Extension: Klipsch SPL-150 at 18Hz vs Power Sound Audio S1801 at 17Hz. 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.
- Phase Control: Klipsch SPL-150 at Yes vs Power Sound Audio S1801 at No
Which Should You Choose?
Choose Power Sound Audio S1801 if you want:
- + larger 18" driver
- + 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 Klipsch SPL-150 and Power Sound Audio S1801 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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