Short answer: the JTR Speakers Captivator 212PRO for the higher ranking, the Rythmik F12 for the lower price. The JTR Speakers Captivator 212PRO ranks #1 of 137 subwoofers at $2600. The Rythmik F12 ranks #51 at $1120, $1480 cheaper.
What the JTR Speakers Captivator 212PRO gets right: Dual 12-inch ported with 1200W DSP amp and full digital sound processor. Set against that: Premium pricing at $2,600, ported room interaction, and 32 kg mid-size footprint.
On the Rythmik F12 side: Sealed 12-inch servo with 370W RMS offers excellent value.
Buy the JTR Speakers Captivator 212PRO if the ranking matters more than the price. Buy the Rythmik F12 if the price matters more than the ranking.
Specifications Side By Side
| JTR Speakers Captivator 212PRO | Rythmik F12 | |
|---|---|---|
| Price | $2,600 | $1,120 |
| Ranked | #1 of 137 in Medium Powered Home Subwoofers (30-75 lbs) | #51 of 137 in Medium Powered Home Subwoofers (30-75 lbs) |
| Enclosure | ported, front | sealed |
| Output SPL at 25 Hz | 95.4 dB | 100.7 dB |
| Output SPL at 31.5 Hz | 112.2 dB | 107.5 dB |
| Output SPL at 40 Hz | 122.7 dB | 112.3 dB |
| Output SPL at 50 Hz | 129.2 dB | 113.1 dB |
| Output SPL at 63 Hz | 131.3 dB | 114.4 dB |
| Output SPL at 80 Hz | 133.2 dB | 113.6 dB |
| Output SPL at 100 Hz | 134.6 dB | - |
| Output SPL at 125 Hz | 135.2 dB | - |
| CEA-2010-A Average (40-80Hz) | 129.1 dB | 113.3 dB |
| Dimensions | 16.0"H x 30.0"W x 22.5"D (406.4 x 762.0 x 571.5 mm) | 15.75"H x 15.75"W x 17.0"D (400.0 x 400.0 x 431.8 mm) |
| Weight | 71 lbs / 32.2 kg | 75 lbs / 34.0 kg |
| Warranty | 5/3 | 5/3 |
| Cabinet Color | black | black |
| Country | United States | United States |
| Measurement Source | Data-bass | Brent Butterworth |
| Power Output (Watts) | 1200W RMS | 370W RMS |
| Input Connections | XLR and RCA | - |
| Amplifier Type | Class D with DSP | - |
| Drivers | 2x 12" (305mm) drivers | 12" (305mm) driver |
| Output SPL at 15 Hz | - | 95.0 dB |
| Output SPL at 20 Hz | - | 97.6 dB |
| Frequency Response | - | 14Hz extension |
The Two Speakers In Full
JTR Speakers Captivator 212PRO: $2,600
Pros: Dual 12-inch ported with 1200W DSP amp and full digital sound processor. Dual-12 output beyond impressive with distortion-free performance. Bulletproof construction for pro sound installations.
Cons: Premium pricing at $2,600, ported room interaction, and 32 kg mid-size footprint.
Notes: Looks like “PA sub”
| Amplifier Type | Class D with DSP |
|---|---|
| CEA-2010-A Average (40-80Hz) | 129.1 dB |
| Cabinet Color | black |
| Country | United States |
| Dimensions | 16.0"H x 30.0"W x 22.5"D (406.4 x 762.0 x 571.5 mm) |
| Drivers | 2x 12" (305mm) drivers |
| Enclosure | ported, front |
| Input Connections | XLR and RCA |
| Measurement Source | Data-bass |
| Output SPL at 25 Hz | 95.4 dB |
| Output SPL at 31.5 Hz | 112.2 dB |
| Output SPL at 40 Hz | 122.7 dB |
| Output SPL at 50 Hz | 129.2 dB |
| Output SPL at 63 Hz | 131.3 dB |
| Output SPL at 80 Hz | 133.2 dB |
| Output SPL at 100 Hz | 134.6 dB |
| Output SPL at 125 Hz | 135.2 dB |
| Power Output (Watts) | 1200W RMS |
| Warranty | 5/3 |
| Weight | 71 lbs / 32.2 kg |
- Head-to-Head Comparisons
- JTR Speakers Captivator 212PRO vs MartinLogan Dynamo 1600X
- JTR Speakers Captivator 212PRO vs HSU Research ULS-15 MK2
- JTR Speakers Captivator 212PRO vs Power Sound Audio (PSA) XV15
- JTR Speakers Captivator 212PRO vs Monoprice SW-15
- JTR Speakers Captivator 212PRO vs SVS SB-3000
- JTR Speakers Captivator 212PRO vs SVS PB-1000 PRO
- JTR Speakers Captivator 212PRO vs Monoprice SW-12
- JTR Speakers Captivator 212PRO vs RSL (Rogersound Labs) Speedwoofer 10S MKII
- See all 13 comparisons
- Links
Rythmik F12: $1,120
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.
| CEA-2010-A Average (40-80Hz) | 113.3 dB |
|---|---|
| Cabinet Color | black |
| Country | United States |
| Dimensions | 15.75"H x 15.75"W x 17.0"D (400.0 x 400.0 x 431.8 mm) |
| Drivers | 12" (305mm) driver |
| Enclosure | sealed |
| Frequency Response | 14Hz extension |
| Measurement Source | Brent Butterworth |
| Output SPL at 15 Hz | 95.0 dB |
| Output SPL at 20 Hz | 97.6 dB |
| Output SPL at 25 Hz | 100.7 dB |
| Output SPL at 31.5 Hz | 107.5 dB |
| Output SPL at 40 Hz | 112.3 dB |
| Output SPL at 50 Hz | 113.1 dB |
| Output SPL at 63 Hz | 114.4 dB |
| Output SPL at 80 Hz | 113.6 dB |
| Power Output (Watts) | 370W RMS |
| Warranty | 5/3 |
| Weight | 75 lbs / 34.0 kg |
- Head-to-Head Comparisons
- Rythmik F12 vs RSL (Rogersound Labs) Speedwoofer 10S MKII
- Rythmik F12 vs SVS SB-2000
- Rythmik F12 vs Monoprice SW-12
- Rythmik F12 vs Klipsch R-121SW
- Rythmik F12 vs SVS PB-1000 PRO
- Rythmik F12 vs Monoprice Monolith M-10 V2
- Rythmik F12 vs SVS SB-3000
- Rythmik F12 vs Monoprice SW-15
- See all 14 comparisons
- Links
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Product prices and availability were last checked August 9, 2026 at 6:57 AM UTC 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.