Short answer: the Rythmik FV18 has been measured and ranked among subwoofers; the SVS PB-5000 R-Evolution has not been independently measured yet, so until it is, this comes down to features and price.
What the SVS PB-5000 R-Evolution offers: Ported 15-inch high-excursion driver with a 2,000W RMS dual-monoblock amplifier and variable port tuning.
What the Rythmik FV18 brings: Independent CEA-2010 testing records 114.3 dB at 20 Hz and 121.3 dB through 40-80 Hz.
Price: the SVS PB-5000 R-Evolution lists at $2,599.99 and the Rythmik FV18 at $2,670.
Buy the Rythmik FV18 if you want a speaker whose sound quality has been measured and ranked.
Buy the SVS PB-5000 R-Evolution if you prefer its design or features, and you can wait for measurements to confirm how it sounds.
Want more options? Browse the full Subwoofers rankings.
Specifications Side By Side
| SVS PB-5000 R-Evolution | Rythmik FV18 | |
|---|---|---|
| Price | $2,599.99 | $2,670 |
| Ranked | - | #53 of 109 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | ported, variable tuning | ported, front |
| Drivers | 15” driver | 18” (457mm) driver |
| Amplifier Power | 2000W RMS | - |
| Frequency Response | 13Hz extension (manufacturer specified) | - |
| Cabinet Color | Premium Black Ash, Piano Gloss Black | black |
| Country | United States | United States |
| Output SPL at 12.5 Hz | - | 102.0 dB |
| Output SPL at 15 Hz | - | 109.5 dB |
| Output SPL at 20 Hz | - | 114.3 dB |
| Output SPL at 25 Hz | - | 117.6 dB |
| Output SPL at 31.5 Hz | - | 119.2 dB |
| Output SPL at 40 Hz | - | 120.4 dB |
| Output SPL at 50 Hz | - | 121.3 dB |
| Output SPL at 63 Hz | - | 121.7 dB |
| Output SPL at 80 Hz | - | 121.9 dB |
| Output SPL at 100 Hz | - | 122.4 dB |
| Output SPL at 125 Hz | - | 121.9 dB |
| CEA-2010-A Average (40-80Hz) | - | 121.3 dB |
| Dimensions | - | 33”H x 21”W x 22”D (838.2 x 533.4 x 558.8 mm) |
| Weight | - | 160.1 lbs (72.6 kg) |
| Warranty | - | 5/3 |
| Measurement Source | - | Data-bass |
| 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 |
Prices on this page were last checked September 29, 2026 at 3:43 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
SVS PB-5000 R-Evolution: $2,599.99 SVS eBay
Older model: the SVS PB-4000 (rated 4.2/5).
Pros: Ported 15-inch high-excursion driver with a 2,000W RMS dual-monoblock amplifier and variable port tuning. SVS rates extension to 13Hz. The SVS Subwoofer Control app adds DSP control and Auto EQ room calibration.
Cons: No independent measurements yet, so its output can’t be compared with ranked subwoofers. A large ported cabinet needs deliberate placement, and ported output does not solve room modes on its own.
Full SVS PB-5000 R-Evolution review and specifications →
| Amplifier Power | 2000W RMS |
|---|---|
| Cabinet Color | Premium Black Ash, Piano Gloss Black |
| Country | United States |
| Drivers | 15” driver |
| Enclosure | ported, variable tuning |
| Frequency Response | 13Hz extension (manufacturer specified) |
- Links
- Reviews, Comparisons and Sound Samples
- These figures are manufacturer-specified rather than independently measured.
- Head-to-Head Comparisons
Rythmik FV18: $2,670 Rythmik Audio eBay
Pros: Independent CEA-2010 testing records 114.3 dB at 20 Hz and 121.3 dB through 40-80 Hz. The ported, front enclosure with 18” (457mm) driver has the headroom for demanding film bass in a large room.
Cons: The 838.2H x 533.4W x 558.8D mm cabinet and 72.6 kg mass make this a serious placement and moving commitment. Ported output does not solve room modes, so careful placement and calibration remain essential.
Full Rythmik FV18 review and specifications →
| AES Input | No |
|---|---|
| Aux Input | No |
| CEA-2010-A Average (40-80Hz) | 121.3 dB |
| Cabinet Color | black |
| Coaxial Input | No |
| Country | United States |
| Dimensions | 33”H x 21”W x 22”D (838.2 x 533.4 x 558.8 mm) |
| Drivers | 18” (457mm) driver |
| Enclosure | ported, front |
| HDMI Input | No |
| Inputs | XLR (2), RCA (line/LFE) |
| Measurement Source | Data-bass |
| Optical Input | No |
| Output SPL at 12.5 Hz | 102.0 dB |
| Output SPL at 15 Hz | 109.5 dB |
| Output SPL at 20 Hz | 114.3 dB |
| Output SPL at 25 Hz | 117.6 dB |
| Output SPL at 31.5 Hz | 119.2 dB |
| Output SPL at 40 Hz | 120.4 dB |
| Output SPL at 50 Hz | 121.3 dB |
| Output SPL at 63 Hz | 121.7 dB |
| Output SPL at 80 Hz | 121.9 dB |
| Output SPL at 100 Hz | 122.4 dB |
| Output SPL at 125 Hz | 121.9 dB |
| RCA Input | Yes |
| TRS Input | No |
| USB Input | No |
| Warranty | 5/3 |
| Weight | 160.1 lbs (72.6 kg) |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Independently measured by Data-bass; the published figures above come from this ASR subwoofer measurement thread.
- Head-to-Head Comparisons