Short answer: the Rythmik F12 on measured sound quality, the Monitor Audio RXW12 on price. The Rythmik F12 ranks #20 of 145 subwoofers at $1439. The Monitor Audio RXW12 ranks #98 at $799, $640 cheaper.
What the Rythmik F12 offers: 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. Watch for: No detailed measurement caveats are currently recorded.
What the Monitor Audio RXW12 offers: Sealed 12-inch with 500W RMS delivers terrific output peaking at 122dB at 63Hz. Powerful punchy bass with excellent pitch definition. Well-suited for small to medium rooms. Watch for: No detailed measurement caveats are currently recorded.
Buy the Rythmik F12 when sound quality outweighs the price for you, and the Monitor Audio RXW12 when the price outweighs sound quality instead.
Still deciding? The full Subwoofers rankings cover every ranked option.
Specifications Side By Side
| Rythmik F12 | Monitor Audio RXW12 | |
|---|---|---|
| Price | $1,120 | $799 |
| Ranked | #20 of 145 in Medium Home Subwoofers (30-75 lbs) | #98 of 145 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | sealed | sealed |
| Output SPL at 20 Hz | 103.6 dB | 88.9 dB |
| Output SPL at 25 Hz | 106.7 dB | 92.0 dB |
| Output SPL at 31.5 Hz | 113.5 dB | 97.9 dB |
| Output SPL at 40 Hz | 118.3 dB | 111.5 dB |
| Output SPL at 50 Hz | 119.1 dB | 114.9 dB |
| Output SPL at 63 Hz | 120.4 dB | 106.3 dB |
| Output SPL at 80 Hz | 119.6 dB | - |
| CEA-2010-A Average (40-80Hz) | 119.3 dB | 110.9 dB (avg of 3/4 bands) |
| Dimensions | 15.7"H x 15.7"W x 17"D (400.0 x 400.0 x 431.8 mm) | 15"H x 16.9"W x 16.9"D (381.0 x 430.0 x 430.0 mm) |
| Weight | 75 lbs (34.0 kg) | 49.8 lbs (22.6 kg) |
| Warranty | 5/3 | 5 |
| Cabinet Color | black | - |
| Country | United States | United Kingdom |
| Measurement Source | Brent Butterworth | Brent Butterworth |
| Amplifier Power | 370W RMS | 500W RMS |
| Frequency Response | 14Hz extension | 21-40Hz |
| Drivers | 12" (305mm) driver | 12" (305mm) driver |
| Output SPL at 16 Hz | 101.0 dB | - |
Related Speaker Comparisons
More top alternatives to Rythmik F12:
- JTR Speakers Captivator 212PRO vs Rythmik F12
- MartinLogan Dynamo 1600X vs Rythmik F12
- HSU Research ULS-15 MK2 vs Rythmik F12
- Monoprice SW-12 vs Rythmik F12
- Rythmik F12 vs Power Sound Audio (PSA) XV15
Prices on this page were last checked September 16, 2026 at 12:41 AM 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.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Speakers In Full
Rythmik F12: $1,120 Rythmik Audio eBay
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 →
| Amplifier Power | 370W RMS |
|---|---|
| CEA-2010-A Average (40-80Hz) | 119.3 dB |
| Cabinet Color | black |
| 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 |
| Measurement Source | Brent Butterworth |
| 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 |
| Warranty | 5/3 |
| Weight | 75 lbs (34.0 kg) |
- 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
Monitor Audio RXW12: $799 eBay
Pros: Sealed 12-inch with 500W RMS delivers terrific output peaking at 122dB at 63Hz. Powerful punchy bass with excellent pitch definition. Well-suited for small to medium rooms.
Full Monitor Audio RXW12 review and specifications →
| Amplifier Power | 500W RMS |
|---|---|
| CEA-2010-A Average (40-80Hz) | 110.9 dB (avg of 3/4 bands) |
| Country | United Kingdom |
| Dimensions | 15"H x 16.9"W x 16.9"D (381.0 x 430.0 x 430.0 mm) |
| Drivers | 12" (305mm) driver |
| Enclosure | sealed |
| Frequency Response | 21-40Hz |
| Measurement Source | Brent Butterworth |
| Output SPL at 20 Hz | 88.9 dB |
| Output SPL at 25 Hz | 92.0 dB |
| Output SPL at 31.5 Hz | 97.9 dB |
| Output SPL at 40 Hz | 111.5 dB |
| Output SPL at 50 Hz | 114.9 dB |
| Output SPL at 63 Hz | 106.3 dB |
| Warranty | 5 |
| Weight | 49.8 lbs (22.6 kg) |
- 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
- Monitor Audio RXW12 vs RSL (Rogersound Labs) Speedwoofer 10S MKII
- Monitor Audio RXW12 vs Monoprice SSW-10
- Monitor Audio RXW12 vs BIC America PL-300
- Monitor Audio RXW12 vs SVS PB-1000 PRO
- Monitor Audio RXW12 vs SVS SB-2000
- Monitor Audio RXW12 vs Klipsch SPL-120
- Monitor Audio RXW12 vs SVS SB-3000
- Monitor Audio RXW12 vs Monoprice SW-15
- See all 10 comparisons