Short answer: the HSU Research VTF-3 MK5 HP. It ranks #52 of 110 subwoofers by sound quality at $1049; the Monoprice Monolith M-210 ranks #87 and costs $1300, so there is not much of a tradeoff to weigh.
What the HSU Research VTF-3 MK5 HP offers: Ported cabinet delivers 121.4dB CEA-2010-A average, one of the best price-to-output ratios in this weight class. Watch for: Ported design requires careful room placement, mid-size 39 kg cabinet, and mid-range output.
What the Monoprice Monolith M-210 offers: Independent CEA-2010 testing records 101.4 dB at 20 Hz and 117.5 dB through 40-80 Hz. The ported, front enclosure with 2x 10” (254mm) drivers 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 924.6H x 449.6W x 599.4D mm cabinet and 73.5 kg mass still require deliberate placement and calibration.
Buy the HSU Research VTF-3 MK5 HP. It ranks higher for sound quality than the Monoprice Monolith M-210 and costs less, which settles it without a real tradeoff to make.
The Monoprice Monolith M-210 is not a sound-quality pick. It sits near the bottom of the 110 subwoofers; there are better options higher up.
Want more options? Browse the full Subwoofers rankings.
Specifications Side By Side
| HSU Research VTF-3 MK5 HP | Monoprice Monolith M-210 | |
|---|---|---|
| Price | $1,099 | $1,300 |
| Ranked | #52 of 110 in Large Home Subwoofers (Over 75 lbs) | #87 of 110 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | ported, front | ported, front |
| Output SPL at 15 Hz | 100.8 dB | 95.6 dB |
| Output SPL at 20 Hz | 108.2 dB | 101.4 dB |
| Output SPL at 25 Hz | 113.4 dB | 107.6 dB |
| Output SPL at 31.5 Hz | 118.2 dB | 110.1 dB |
| Output SPL at 40 Hz | 121.9 dB | 113.6 dB |
| Output SPL at 50 Hz | 122.3 dB | 122.9 dB |
| Output SPL at 63 Hz | 121.1 dB | 115.5 dB |
| Output SPL at 80 Hz | 120.4 dB | 118.2 dB |
| CEA-2010-A Average (40-80Hz) | 121.4 dB | 117.5 dB |
| Dimensions | 25"H x 17.2"W x 24"D (635.0 x 438.1 x 609.6 mm) | 36.4"H x 17.7"W x 23.6"D (924.6 x 449.6 x 599.4 mm) |
| Weight | 85.1 lbs (38.6 kg) | 162 lbs (73.5 kg) |
| Warranty | 7/2(+3) | 5 |
| Cabinet Color | black | black |
| Country | United States | United States |
| Measurement Source | Manufacturer | Brent Butterworth |
| Drivers | 15" (381mm) driver | 2x 10" (254mm) drivers |
| Output SPL at 100 Hz | - | 118.3 dB |
| Output SPL at 125 Hz | - | 119.6 dB |
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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.
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The Two Speakers In Full
HSU Research VTF-3 MK5 HP: $1,099 HSU Research eBay
Pros: Ported cabinet delivers 121.4dB CEA-2010-A average, one of the best price-to-output ratios in this weight class.
Cons: Ported design requires careful room placement, mid-size 39 kg cabinet, and mid-range output.
Notes: Price includes shipping
Full HSU Research VTF-3 MK5 HP review and specifications →
| CEA-2010-A Average (40-80Hz) | 121.4 dB |
|---|---|
| Cabinet Color | black |
| Country | United States |
| Dimensions | 25"H x 17.2"W x 24"D (635.0 x 438.1 x 609.6 mm) |
| Drivers | 15" (381mm) driver |
| Enclosure | ported, front |
| Measurement Source | Manufacturer |
| Output SPL at 15 Hz | 100.8 dB |
| Output SPL at 20 Hz | 108.2 dB |
| Output SPL at 25 Hz | 113.4 dB |
| Output SPL at 31.5 Hz | 118.2 dB |
| Output SPL at 40 Hz | 121.9 dB |
| Output SPL at 50 Hz | 122.3 dB |
| Output SPL at 63 Hz | 121.1 dB |
| Output SPL at 80 Hz | 120.4 dB |
| Warranty | 7/2(+3) |
| Weight | 85.1 lbs (38.6 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- These figures are manufacturer-specified rather than independently measured.
- Head-to-Head Comparisons
- HSU Research VTF-3 MK5 HP vs Rythmik FV18
- HSU Research VTF-3 MK5 HP vs SVS PB-3000
- HSU Research VTF-3 MK5 HP vs HSU Research VTF-15H MK2
- HSU Research VTF-3 MK5 HP vs Harbottle Audio C24 L1
- HSU Research VTF-3 MK5 HP vs JTR Speakers Captivator RS1
- HSU Research VTF-3 MK5 HP vs Rythmik FV15HP
- HSU Research VTF-3 MK5 HP vs Monoprice Monolith 13 THX Ultra
- HSU Research VTF-3 MK5 HP vs Arendal 1723 Subwoofer 2V
- See all 54 comparisons
Monoprice Monolith M-210: $1,300 eBay
Pros: Independent CEA-2010 testing records 101.4 dB at 20 Hz and 117.5 dB through 40-80 Hz. The ported, front enclosure with 2x 10” (254mm) drivers 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 924.6H x 449.6W x 599.4D mm cabinet and 73.5 kg mass still require deliberate placement and calibration.
Notes: Product # 38545
Full Monoprice Monolith M-210 review and specifications →
| CEA-2010-A Average (40-80Hz) | 117.5 dB |
|---|---|
| Cabinet Color | black |
| Country | United States |
| Dimensions | 36.4"H x 17.7"W x 23.6"D (924.6 x 449.6 x 599.4 mm) |
| Drivers | 2x 10" (254mm) drivers |
| Enclosure | ported, front |
| Measurement Source | Brent Butterworth |
| Output SPL at 15 Hz | 95.6 dB |
| Output SPL at 20 Hz | 101.4 dB |
| Output SPL at 25 Hz | 107.6 dB |
| Output SPL at 31.5 Hz | 110.1 dB |
| Output SPL at 40 Hz | 113.6 dB |
| Output SPL at 50 Hz | 122.9 dB |
| Output SPL at 63 Hz | 115.5 dB |
| Output SPL at 80 Hz | 118.2 dB |
| Output SPL at 100 Hz | 118.3 dB |
| Output SPL at 125 Hz | 119.6 dB |
| Warranty | 5 |
| Weight | 162 lbs (73.5 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