Short answer: the JTR Speakers Orbit Shifter PRO for the higher ranking, the Monoprice Monolith 16 THX Ultra for the lower price. The JTR Speakers Orbit Shifter PRO ranks #1 of 97 subwoofers at $4200. The Monoprice Monolith 16 THX Ultra ranks #13 at $2300, $1900 cheaper.
On the JTR Speakers Orbit Shifter PRO side: Dual 18-inch horn-loaded drivers deliver a class-leading 141.3dB CEA-2010-A average, well beyond any other subwoofer tested. The catch: Extremely high price ($4,200) and weighs 84 kg - requires dedicated placement and amplifier.
The case for the Monoprice Monolith 16 THX Ultra: 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. Set against that: Heavy at 78 kg and ported design can interact with room acoustics.
Buy the JTR Speakers Orbit Shifter PRO if the ranking matters more than the price. Buy the Monoprice Monolith 16 THX Ultra if the price matters more than the ranking.
Specifications Side By Side
| JTR Speakers Orbit Shifter PRO | Monoprice Monolith 16 THX Ultra | |
|---|---|---|
| Price | $4,200 | $2,300 |
| Ranked | #1 of 97 in Large Powered Home Subwoofers (Over 75 lbs) | #13 of 97 in Large Powered Home Subwoofers (Over 75 lbs) |
| Enclosure | horn | ported, front |
| Output SPL at 15 Hz | 95.7 dB | 107.3 dB |
| Output SPL at 20 Hz | 101.9 dB | 118.4 dB |
| Output SPL at 25 Hz | 114.9 dB | 123.3 dB |
| Output SPL at 31.5 Hz | 128.2 dB | 125.1 dB |
| Output SPL at 40 Hz | 136.0 dB | 126.3 dB |
| Output SPL at 50 Hz | 141.0 dB | 126.5 dB |
| Output SPL at 63 Hz | 144.0 dB | 126.6 dB |
| Output SPL at 80 Hz | 144.2 dB | 126.8 dB |
| Output SPL at 100 Hz | 143.4 dB | 127.2 dB |
| Output SPL at 125 Hz | 140.1 dB | 127.6 dB |
| CEA-2010-A Average (40-80Hz) | 141.3 dB | 126.5 dB |
| Dimensions | 45.0"H x 22.5"W x 32.0"D (1143.0 x 571.5 x 812.8 mm) | 25.6"H x 22.0"W x 28.1"D (650.2 x 558.8 x 713.7 mm) |
| Weight | 185 lbs / 83.9 kg | 171.5 lbs / 77.8 kg |
| Warranty | 5 | 5 |
| Cabinet Color | black | black |
| Country | United States | United States |
| Measurement Source | Data-bass | Audioholics |
| Drivers | 18" (457mm) driver | 16" (406mm) driver |
The Two Speakers In Full
JTR Speakers Orbit Shifter PRO: $4,200
Pros: Dual 18-inch horn-loaded drivers deliver a class-leading 141.3dB CEA-2010-A average, well beyond any other subwoofer tested. Built for dedicated home theaters chasing reference-level output rather than living-room duty.
Cons: Extremely high price ($4,200) and weighs 84 kg - requires dedicated placement and amplifier.
Notes: Looks like “PA sub”
| CEA-2010-A Average (40-80Hz) | 141.3 dB |
|---|---|
| Cabinet Color | black |
| Country | United States |
| Dimensions | 45.0"H x 22.5"W x 32.0"D (1143.0 x 571.5 x 812.8 mm) |
| Drivers | 18" (457mm) driver |
| Enclosure | horn |
| Measurement Source | Data-bass |
| Output SPL at 15 Hz | 95.7 dB |
| Output SPL at 20 Hz | 101.9 dB |
| Output SPL at 25 Hz | 114.9 dB |
| Output SPL at 31.5 Hz | 128.2 dB |
| Output SPL at 40 Hz | 136.0 dB |
| Output SPL at 50 Hz | 141.0 dB |
| Output SPL at 63 Hz | 144.0 dB |
| Output SPL at 80 Hz | 144.2 dB |
| Output SPL at 100 Hz | 143.4 dB |
| Output SPL at 125 Hz | 140.1 dB |
| Warranty | 5 |
| Weight | 185 lbs / 83.9 kg |
- Head-to-Head Comparisons
- JTR Speakers Orbit Shifter PRO vs JTR Speakers Orbit Shifter LFU
- JTR Speakers Orbit Shifter PRO vs Power Sound Audio (PSA) TRIAX
- JTR Speakers Orbit Shifter PRO vs JTR Speakers Captivator 4000ULF
- JTR Speakers Orbit Shifter PRO vs JTR Speakers Captivator S2
- JTR Speakers Orbit Shifter PRO vs Reaction Audio PV-15X
- JTR Speakers Orbit Shifter PRO vs Monoprice Monolith M-215
- JTR Speakers Orbit Shifter PRO vs Rythmik FV15HP
- JTR Speakers Orbit Shifter PRO vs HSU Research VTF-15H MK2
- See all 13 comparisons
- Links
Monoprice Monolith 16 THX Ultra: $2,300
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
| CEA-2010-A Average (40-80Hz) | 126.5 dB |
|---|---|
| Cabinet Color | black |
| Country | United States |
| Dimensions | 25.6"H x 22.0"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 |
- Head-to-Head Comparisons
- Monoprice Monolith 16 THX Ultra vs Harbottle Audio C24 L2
- Monoprice Monolith 16 THX Ultra vs Funk Audio Ultra 21.0LX
- Monoprice Monolith 16 THX Ultra vs Funk Audio Classic 18.0
- Monoprice Monolith 16 THX Ultra vs JTR Speakers Captivator 2400
- Monoprice Monolith 16 THX Ultra vs Reaction Audio PV-15X
- Monoprice Monolith 16 THX Ultra vs Monoprice Monolith M-215
- Monoprice Monolith 16 THX Ultra vs JTR Speakers Captivator S2
- Monoprice Monolith 16 THX Ultra vs JTR Speakers Captivator 4000ULF
- See all 18 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.