Short answer: the Kali Audio WS-6.2. It ranks #198 of 212 subwoofers by sound quality (rated 3.0/5) at $599 and is still sold new; the JBL SUB 550P ranks #206 (rated 2.9/5) and is discontinued, so it is only an option used.
The case for the Kali Audio WS-6.2: A compact powered subwoofer with dual 6.5 inch drivers and XLR and TRS inputs, made to pair with studio monitors. The catch: Measures -3dB near 31 to 32Hz and -10dB near 27Hz at moderate level, and it could not pass a CEA-2010 burst at 20Hz.
What the JBL SUB 550P does well: A discontinued sealed 10 inch subwoofer with a 300 watt amp, multiple line inputs and an adjustable crossover. Watch for: Bass is strong to about 30Hz but 10dB down there against the 60 to 80Hz range.
Buy the Kali Audio WS-6.2. It is rated higher for sound quality and still sold new, while the JBL SUB 550P is discontinued.
Looking for alternatives? See the complete Subwoofers rankings.
Prices on this page were last checked November 14, 2026 at 6:17 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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Specifications Side By Side
| Kali Audio WS-6.2 | JBL SUB 550P | |
|---|---|---|
| Price | $599.00 | $600 Discontinued |
| Ranked | #198 of 212 in Medium Home Subwoofers (30-75 lbs) | #206 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Warranty | 1 | 1 |
| Enclosure | ported, front | sealed |
| Output SPL at 25 Hz | 96.6 dB | 89.8 dB |
| Output SPL at 31.5 Hz | 102.5 dB | 98.1 dB |
| Output SPL at 40 Hz | 102.4 dB | 101.5 dB |
| Output SPL at 50 Hz | 101.8 dB | 103.2 dB |
| Output SPL at 63 Hz | 103.4 dB | 103.3 dB |
| Output SPL at 80 Hz | 110.4 dB | 103.7 dB |
| Output SPL at 100 Hz | 111.6 dB | 104.2 dB |
| CEA-2010-A Average (40-80Hz) | 104.5 dB | 102.9 dB |
| Dimensions | 14.5”H x 12.2”W x 11”D (368.3 x 309.9 x 279.4 mm) | 17.5”H x 14.9”W x 15”D (444 x 379 x 380 mm) |
| Weight | 31.1 lbs (14.1 kg) | 50 lbs (22.7 kg) |
| Cabinet Color | black | black |
| Country | United States | United States |
| Measurement Source | ErinsAudioCorner | ErinsAudioCorner |
| Amplifier Power | 400W RMS | 300W RMS |
| Frequency Response | 27-200Hz | 27-150Hz |
| Drivers | 2x 6.5” (165mm) driver | 10” (254mm) driver |
| Inputs | XLR/TRS combo (2), RCA (2) | - |
| XLR Input | Yes | - |
| RCA Input | Yes | - |
| TRS Input | Yes | - |
| Optical Input | No | - |
| Coaxial Input | No | - |
| USB Input | No | - |
| HDMI Input | No | - |
| AES Input | No | - |
| Aux Input | No | - |
| Output SPL at 20 Hz | - | 84.7 dB |
Where the Ratings Come From
- Kali Audio WS-6.2: reviews by Erin’s Audio Corner.
- JBL SUB 550P: reviews by Erin’s Audio Corner.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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