Short answer: the Monoprice Monolith 16 THX Ultra. It ranks #18 of 110 subwoofers by sound quality at $2300; the Genelec 7071A ranks #84 and costs $4995, so there is little reason to consider the other one.
What the Monoprice Monolith 16 THX Ultra offers: 16-inch ported driver and THX Ultra certification deliver 126.5dB CEA-2010-A average at a fraction of the price of the subwoofers ranked above it. Watch for: Heavy at 78 kg and ported design can interact with room acoustics.
What the Genelec 7071A offers: Independent CEA-2010 testing records 106.6 dB at 20 Hz and 118.0 dB through 40-80 Hz. The ported, bottom enclosure with 2x 12” (305mm) driver has the headroom for demanding film bass in a large room. Watch for: The 754.9H x 802.9W x 490.0D mm cabinet and 81.0 kg mass make this a serious placement and moving commitment. Ported output does not solve room modes, so careful placement and calibration remain essential.
Buy the Monoprice Monolith 16 THX Ultra. It ranks higher for sound quality than the Genelec 7071A and costs less, so the other one has nothing left to offer.
If sound quality matters at all to you, skip the Genelec 7071A. It ranks near the bottom of the 110 subwoofers, so look higher up the list instead.
Looking for alternatives? See the complete Subwoofers rankings.
Specifications Side By Side
| Monoprice Monolith 16 THX Ultra | Genelec 7071A | |
|---|---|---|
| Price | $2,300 | $4995 |
| Ranked | #18 of 110 in Large Home Subwoofers (Over 75 lbs) | #84 of 110 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | ported, front | ported, bottom |
| Output SPL at 15 Hz | 107.3 dB | 103.5 dB |
| Output SPL at 20 Hz | 118.4 dB | 106.6 dB |
| Output SPL at 25 Hz | 123.3 dB | 108.9 dB |
| Output SPL at 31.5 Hz | 125.1 dB | 112.2 dB |
| Output SPL at 40 Hz | 126.3 dB | 115.9 dB |
| Output SPL at 50 Hz | 126.5 dB | 118.2 dB |
| Output SPL at 63 Hz | 126.6 dB | 119.1 dB |
| Output SPL at 80 Hz | 126.8 dB | 118.6 dB |
| Output SPL at 100 Hz | 127.2 dB | - |
| Output SPL at 125 Hz | 127.6 dB | - |
| CEA-2010-A Average (40-80Hz) | 126.5 dB | 118.0 dB |
| Dimensions | 25.6"H x 22"W x 28.1"D (650.2 x 558.8 x 713.7 mm) | 29.7"H x 31.6"W x 19.3"D (754.9 x 802.9 x 490.0 mm) |
| Weight | 171.5 lbs (77.8 kg) | 178.6 lbs (81.0 kg) |
| Warranty | 5 | 2(+3) |
| Cabinet Color | black | - |
| Country | United States | Finland |
| Measurement Source | Audioholics | Ilkka Rissanen |
| Drivers | 16" (406mm) driver | 2x 12" (305mm) driver |
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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
Monoprice Monolith 16 THX Ultra: $2,300 eBay
Pros: 16-inch ported driver and THX Ultra certification deliver 126.5dB CEA-2010-A average at a fraction of the price of the subwoofers ranked above it.
Cons: Heavy at 78 kg and ported design can interact with room acoustics.
Notes: Product # 42031
Full Monoprice Monolith 16 THX Ultra review and specifications →
| CEA-2010-A Average (40-80Hz) | 126.5 dB |
|---|---|
| Cabinet Color | black |
| Country | United States |
| Dimensions | 25.6"H x 22"W x 28.1"D (650.2 x 558.8 x 713.7 mm) |
| Drivers | 16" (406mm) driver |
| Enclosure | ported, front |
| Measurement Source | Audioholics |
| Output SPL at 15 Hz | 107.3 dB |
| Output SPL at 20 Hz | 118.4 dB |
| Output SPL at 25 Hz | 123.3 dB |
| Output SPL at 31.5 Hz | 125.1 dB |
| Output SPL at 40 Hz | 126.3 dB |
| Output SPL at 50 Hz | 126.5 dB |
| Output SPL at 63 Hz | 126.6 dB |
| Output SPL at 80 Hz | 126.8 dB |
| Output SPL at 100 Hz | 127.2 dB |
| Output SPL at 125 Hz | 127.6 dB |
| Warranty | 5 |
| Weight | 171.5 lbs (77.8 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Independently measured by Audioholics; the published figures above come from this ASR subwoofer measurement thread.
- Head-to-Head Comparisons
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Genelec 7071A: $4995 eBay
Pros: Independent CEA-2010 testing records 106.6 dB at 20 Hz and 118.0 dB through 40-80 Hz. The ported, bottom enclosure with 2x 12” (305mm) driver has the headroom for demanding film bass in a large room.
Cons: The 754.9H x 802.9W x 490.0D mm cabinet and 81.0 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 Genelec 7071A review and specifications →
| CEA-2010-A Average (40-80Hz) | 118.0 dB |
|---|---|
| Country | Finland |
| Dimensions | 29.7"H x 31.6"W x 19.3"D (754.9 x 802.9 x 490.0 mm) |
| Drivers | 2x 12" (305mm) driver |
| Enclosure | ported, bottom |
| Measurement Source | Ilkka Rissanen |
| Output SPL at 15 Hz | 103.5 dB |
| Output SPL at 20 Hz | 106.6 dB |
| Output SPL at 25 Hz | 108.9 dB |
| Output SPL at 31.5 Hz | 112.2 dB |
| Output SPL at 40 Hz | 115.9 dB |
| Output SPL at 50 Hz | 118.2 dB |
| Output SPL at 63 Hz | 119.1 dB |
| Output SPL at 80 Hz | 118.6 dB |
| Warranty | 2(+3) |
| Weight | 178.6 lbs (81.0 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Independently measured by Ilkka Rissanen; the published figures above come from this ASR subwoofer measurement thread.
- Head-to-Head Comparisons