Short answer: the HSU Research VTF-3 MK3 with Turbocharger for better sound quality, the Monoprice Monolith M12-S for the lower price. The HSU Research VTF-3 MK3 with Turbocharger ranks #88 of 97 subwoofers at $1599. The Monoprice Monolith M12-S ranks #89 at $599, $1000 cheaper.
What the Monoprice Monolith M12-S offers: Published CEA-2010 specifications list 100.1 dB at 20 Hz and 112.7 dB through 40-80 Hz. The sealed enclosure with 12” (305mm) driver delivers substantial upper-bass output for movie effects and music. Watch for: Deep-bass output is more limited than the strong 40-80 Hz result suggests, so it is not the right choice when the lowest movie effects are the priority. The 500.4H x 391.2W x 424.2D mm cabinet and 44.7 kg mass still require deliberate placement and calibration.
What the HSU Research VTF-3 MK3 with Turbocharger offers: Independent CEA-2010 testing records 101.6 dB at 20 Hz and 112.8 dB through 40-80 Hz. The ported, rear enclosure with 12” (305mm) driver delivers substantial upper-bass output for movie effects and music. Watch for: Deep-bass output is more limited than the strong 40-80 Hz result suggests, so it is not the right choice when the lowest movie effects are the priority. The 546.1H x 431.8W x 635.0D mm cabinet and 40.8 kg mass still require deliberate placement and calibration.
Buy the Monoprice Monolith M12-S if the price matters more than sound quality. Buy the HSU Research VTF-3 MK3 with Turbocharger if sound quality matters more than the price.
Skip both if sound quality is the priority. There are better options higher up the 97 subwoofers.
Specifications Side By Side
| Monoprice Monolith M12-S | HSU Research VTF-3 MK3 with Turbocharger | |
|---|---|---|
| Price | $599 | $1599 |
| Ranked | #89 of 97 in Large Powered Home Subwoofers (Over 75 lbs) | #88 of 97 in Large Powered Home Subwoofers (Over 75 lbs) |
| Enclosure | sealed | ported, rear |
| Output SPL at 15 Hz | 95.2 dB | 100.6 dB |
| Output SPL at 20 Hz | 100.1 dB | 101.6 dB |
| Output SPL at 25 Hz | 104.0 dB | 102.6 dB |
| Output SPL at 31.5 Hz | 108.0 dB | 106.5 dB |
| Output SPL at 40 Hz | 110.6 dB | 110.8 dB |
| Output SPL at 50 Hz | 112.8 dB | 112.9 dB |
| Output SPL at 63 Hz | 113.7 dB | 113.5 dB |
| Output SPL at 80 Hz | 113.8 dB | 113.8 dB |
| Output SPL at 100 Hz | 113.7 dB | - |
| Output SPL at 125 Hz | 113.7 dB | - |
| CEA-2010-A Average (40-80Hz) | 112.7 dB | 112.8 dB |
| Dimensions | 19.7"H x 15.4"W x 16.7"D (500.4 x 391.2 x 424.2 mm) | 21.5"H x 17"W x 25"D (546.1 x 431.8 x 635.0 mm) |
| Warranty | 5 | - |
| Country | United States | United States |
| Measurement Source | Manufacturer | Ilkka Rissanen |
| Weight | 98.5 lbs / 44.7 kg | 89.9 lbs / 40.8 kg |
| Drivers | 12" (305mm) driver | 12" (305mm) driver |
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- Monoprice Monolith 12 THX Ultra vs HSU Research VTF-3 MK3
- HSU Research VTF-3 MK3 vs HSU Research VTF-3 MK3 with Turbocharger
- Magico Audio ASUB vs Genelec 7070A
Prices on this page were last checked September 8, 2026 at 6:02 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
Monoprice Monolith M12-S: $599 eBay
Pros: Published CEA-2010 specifications list 100.1 dB at 20 Hz and 112.7 dB through 40-80 Hz. The sealed enclosure with 12” (305mm) driver delivers substantial upper-bass output for movie effects and music.
Cons: Deep-bass output is more limited than the strong 40-80 Hz result suggests, so it is not the right choice when the lowest movie effects are the priority. The 500.4H x 391.2W x 424.2D mm cabinet and 44.7 kg mass still require deliberate placement and calibration.
Notes: Product # 35142
Full Monoprice Monolith M12-S review and specifications →
| CEA-2010-A Average (40-80Hz) | 112.7 dB |
|---|---|
| Country | United States |
| Dimensions | 19.7"H x 15.4"W x 16.7"D (500.4 x 391.2 x 424.2 mm) |
| Drivers | 12" (305mm) driver |
| Enclosure | sealed |
| Measurement Source | Manufacturer |
| Output SPL at 15 Hz | 95.2 dB |
| Output SPL at 20 Hz | 100.1 dB |
| Output SPL at 25 Hz | 104.0 dB |
| Output SPL at 31.5 Hz | 108.0 dB |
| Output SPL at 40 Hz | 110.6 dB |
| Output SPL at 50 Hz | 112.8 dB |
| Output SPL at 63 Hz | 113.7 dB |
| Output SPL at 80 Hz | 113.8 dB |
| Output SPL at 100 Hz | 113.7 dB |
| Output SPL at 125 Hz | 113.7 dB |
| Warranty | 5 |
| Weight | 98.5 lbs / 44.7 kg |
- Links
- Reviews, Comparisons and Sound Samples
HSU Research VTF-3 MK3 with Turbocharger: $1599 eBay
Pros: Independent CEA-2010 testing records 101.6 dB at 20 Hz and 112.8 dB through 40-80 Hz. The ported, rear enclosure with 12” (305mm) driver delivers substantial upper-bass output for movie effects and music.
Cons: Deep-bass output is more limited than the strong 40-80 Hz result suggests, so it is not the right choice when the lowest movie effects are the priority. The 546.1H x 431.8W x 635.0D mm cabinet and 40.8 kg mass still require deliberate placement and calibration.
Full HSU Research VTF-3 MK3 with Turbocharger review and specifications →
| CEA-2010-A Average (40-80Hz) | 112.8 dB |
|---|---|
| Country | United States |
| Dimensions | 21.5"H x 17"W x 25"D (546.1 x 431.8 x 635.0 mm) |
| Drivers | 12" (305mm) driver |
| Enclosure | ported, rear |
| Measurement Source | Ilkka Rissanen |
| Output SPL at 15 Hz | 100.6 dB |
| Output SPL at 20 Hz | 101.6 dB |
| Output SPL at 25 Hz | 102.6 dB |
| Output SPL at 31.5 Hz | 106.5 dB |
| Output SPL at 40 Hz | 110.8 dB |
| Output SPL at 50 Hz | 112.9 dB |
| Output SPL at 63 Hz | 113.5 dB |
| Output SPL at 80 Hz | 113.8 dB |
| Weight | 89.9 lbs / 40.8 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons