Short answer: the SVS SB-3000 R|Evolution. Both are rated 4.1/5 for sound quality (#23 and #21 of 212 subwoofers), and the SVS SB-3000 R|Evolution costs $1,299 against $1,439 for the Rythmik F12, so with nothing between them on sound quality, price settles it.
Why pick the Rythmik F12: Sealed 12-inch servo with 370W RMS offers excellent value.
Why pick the SVS SB-3000 R|Evolution: Compact sealed 13-inch high-excursion driver backed by a 1,200W RMS (4,000W peak) Sledge STA-1200D2 MOSFET amplifier with a 295MHz DSP engine. Watch for: A sealed enclosure trades raw low-end output below 25Hz compared to ported models like the SVS PB-3000 R|Evolution, requiring careful room boundary placement or dual subwoofers in large open spaces.
Buy the SVS SB-3000 R|Evolution. Both are rated the same for sound quality, and it costs $140 less than the Rythmik F12.
About the ratings: the SVS SB-3000 R|Evolution’s rating is estimated from measured siblings and predecessors rather than its own measurements, with a likely range of 3.9 to 4.3, so this verdict could change once it is measured.
Looking for alternatives? See the complete Subwoofers rankings.
Specifications Side By Side
| Rythmik F12 | SVS SB-3000 R|Evolution | |
|---|---|---|
| Price | $1,439 | $1,299.00 |
| Ranked | #21 of 212 in Medium Home Subwoofers (30-75 lbs) | #23 of 212 in Medium Home Subwoofers (30-75 lbs) Estimated |
| Enclosure | sealed | sealed |
| Output SPL at 20 Hz | 103.6 dB | - |
| Output SPL at 25 Hz | 106.7 dB | - |
| Output SPL at 31.5 Hz | 113.5 dB | - |
| Output SPL at 40 Hz | 118.3 dB | - |
| Output SPL at 50 Hz | 119.1 dB | - |
| Output SPL at 63 Hz | 120.4 dB | - |
| Output SPL at 80 Hz | 119.6 dB | - |
| CEA-2010-A Average (40-80Hz) | 119.3 dB | - |
| Dimensions | 15.7”H x 15.7”W x 17”D (400.0 x 400.0 x 431.8 mm) | 15.6”H x 15.2”W x 17.8”D (397 x 385 x 451 mm) |
| Weight | 75 lbs (34.0 kg) | 58.2 lbs (26.4 kg) |
| Warranty | 5/3 | 5 |
| Cabinet Color | black | Premium Black Ash, Piano Gloss Black, Piano Gloss White |
| Country | United States | United States |
| Measurement Source | Brent Butterworth | - |
| Amplifier Power | 370W RMS | 1200W RMS / 4000W peak |
| Frequency Response | 14Hz extension | 17Hz - 230Hz (±3dB) (manufacturer specified) |
| Drivers | 12” (305mm) driver | 13” driver |
| Output SPL at 16 Hz | 101.0 dB | - |
| Inputs | XLR (2), RCA (line/LFE) | - |
| XLR Input | Yes | - |
| RCA Input | Yes | - |
| TRS Input | No | - |
| Optical Input | No | - |
| Coaxial Input | No | - |
| USB Input | No | - |
| HDMI Input | No | - |
| AES Input | No | - |
| Aux Input | No | - |
| App | - | Yes |
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Prices on this page were last checked October 11, 2026 at 4:59 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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The Two Speakers In Full
Rythmik F12: $1,439 Rythmik Audio eBay
Same family: the Rythmik F18 (larger subwoofer, rated 4.1/5).
Pros: Sealed 12-inch servo with 370W RMS offers excellent value. Very musical and can disappear in small rooms. Digs to 14Hz with excellent build quality and well-braced cabinet.
Full Rythmik F12 review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 370W RMS |
| Aux Input | No |
| CEA-2010-A Average (40-80Hz) | 119.3 dB |
| Cabinet Color | black |
| Coaxial Input | No |
| Country | United States |
| Dimensions | 15.7”H x 15.7”W x 17”D (400.0 x 400.0 x 431.8 mm) |
| Drivers | 12” (305mm) driver |
| Enclosure | sealed |
| Frequency Response | 14Hz extension |
| HDMI Input | No |
| Inputs | XLR (2), RCA (line/LFE) |
| Measurement Source | Brent Butterworth |
| Optical Input | No |
| Output SPL at 16 Hz | 101.0 dB |
| Output SPL at 20 Hz | 103.6 dB |
| Output SPL at 25 Hz | 106.7 dB |
| Output SPL at 31.5 Hz | 113.5 dB |
| Output SPL at 40 Hz | 118.3 dB |
| Output SPL at 50 Hz | 119.1 dB |
| Output SPL at 63 Hz | 120.4 dB |
| Output SPL at 80 Hz | 119.6 dB |
| RCA Input | Yes |
| TRS Input | No |
| USB Input | No |
| Warranty | 5/3 |
| Weight | 75 lbs (34.0 kg) |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Independently measured by Brent Butterworth; the published figures above come from this ASR subwoofer measurement thread.
- Head-to-Head Comparisons
SVS SB-3000 R|Evolution: $1,299.00 Estimated Amazon SVS eBay
Older model: the SVS SB-3000 (ranked higher, rated 4.1/5). See every SVS subwoofers generation.
Pros: Compact sealed 13-inch high-excursion driver backed by a 1,200W RMS (4,000W peak) Sledge STA-1200D2 MOSFET amplifier with a 295MHz DSP engine. SVS rates frequency response from 17Hz to 230Hz (±3dB). Features SVS Subwoofer Control smartphone app connectivity, 3-band parametric EQ, and onboard SVS Auto EQ room correction.
Cons: A sealed enclosure trades raw low-end output below 25Hz compared to ported models like the SVS PB-3000 R|Evolution, requiring careful room boundary placement or dual subwoofers in large open spaces.
Full SVS SB-3000 R|Evolution review and specifications →
| Released | Feb 2026 (8 months ago) |
|---|---|
| Amplifier Power | 1200W RMS / 4000W peak |
| App | Yes |
| Cabinet Color | Premium Black Ash, Piano Gloss Black, Piano Gloss White |
| Country | United States |
| Dimensions | 15.6”H x 15.2”W x 17.8”D (397 x 385 x 451 mm) |
| Drivers | 13” driver |
| Enclosure | sealed |
| Frequency Response | 17Hz - 230Hz (±3dB) (manufacturer specified) |
| Warranty | 5 |
| Weight | 58.2 lbs (26.4 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
- Head-to-Head Comparisons