Short answer: the JTR Speakers Orbit Shifter PRO for the higher ranking, the Monoprice Monolith M-15 V2 for the lower price. The JTR Speakers Orbit Shifter PRO ranks #1 of 97 subwoofers at $4200. The Monoprice Monolith M-15 V2 ranks #55 at $1500, $2700 cheaper.
What the JTR Speakers Orbit Shifter PRO gets right: Dual 18-inch horn-loaded drivers deliver a class-leading 141.3dB CEA-2010-A average, well beyond any other subwoofer tested. Set against that: Extremely high price ($4,200) and weighs 84 kg - requires dedicated placement and amplifier.
Buy the JTR Speakers Orbit Shifter PRO if the ranking matters more than the price. Buy the Monoprice Monolith M-15 V2 if the price matters more than the ranking.
Specifications Side By Side
| JTR Speakers Orbit Shifter PRO | Monoprice Monolith M-15 V2 | |
|---|---|---|
| Price | $4,200 | $1,500 |
| Ranked | #1 of 97 in Large Powered Home Subwoofers (Over 75 lbs) | #55 of 97 in Large Powered Home Subwoofers (Over 75 lbs) |
| Enclosure | horn | ported, front |
| Output SPL at 15 Hz | 95.7 dB | 106.3 dB |
| Output SPL at 20 Hz | 101.9 dB | 112.6 dB |
| Output SPL at 25 Hz | 114.9 dB | 116.6 dB |
| Output SPL at 31.5 Hz | 128.2 dB | 119.5 dB |
| Output SPL at 40 Hz | 136.0 dB | 120.9 dB |
| Output SPL at 50 Hz | 141.0 dB | 120.6 dB |
| Output SPL at 63 Hz | 144.0 dB | 120.0 dB |
| Output SPL at 80 Hz | 144.2 dB | 118.7 dB |
| Output SPL at 100 Hz | 143.4 dB | 120.1 dB |
| Output SPL at 125 Hz | 140.1 dB | 120.2 dB |
| CEA-2010-A Average (40-80Hz) | 141.3 dB | 120.0 dB |
| Dimensions | 45.0"H x 22.5"W x 32.0"D (1143.0 x 571.5 x 812.8 mm) | 28.7"H x 17.7"W x 26.8"D (729.0 x 449.6 x 680.7 mm) |
| Weight | 185 lbs / 83.9 kg | 132.9 lbs / 60.3 kg |
| Warranty | 5 | 5 |
| Cabinet Color | black | black |
| Country | United States | United States |
| Measurement Source | Data-bass | Manufacturer |
| Drivers | 18" (457mm) driver | 15" (381mm) driver |
| Output SPL at 12.5 Hz | - | 91.0 dB |
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 Monoprice Monolith 16 THX Ultra
- 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
- See all 13 comparisons
- Links
Monoprice Monolith M-15 V2: $1,500 Amazon
Notes: Product # 42851
| CEA-2010-A Average (40-80Hz) | 120.0 dB |
|---|---|
| Cabinet Color | black |
| Country | United States |
| Dimensions | 28.7"H x 17.7"W x 26.8"D (729.0 x 449.6 x 680.7 mm) |
| Drivers | 15" (381mm) driver |
| Enclosure | ported, front |
| Measurement Source | Manufacturer |
| Output SPL at 12.5 Hz | 91.0 dB |
| Output SPL at 15 Hz | 106.3 dB |
| Output SPL at 20 Hz | 112.6 dB |
| Output SPL at 25 Hz | 116.6 dB |
| Output SPL at 31.5 Hz | 119.5 dB |
| Output SPL at 40 Hz | 120.9 dB |
| Output SPL at 50 Hz | 120.6 dB |
| Output SPL at 63 Hz | 120.0 dB |
| Output SPL at 80 Hz | 118.7 dB |
| Output SPL at 100 Hz | 120.1 dB |
| Output SPL at 125 Hz | 120.2 dB |
| Warranty | 5 |
| Weight | 132.9 lbs / 60.3 kg |
- Head-to-Head Comparisons
- Monoprice Monolith M-15 V2 vs SVS PB-4000
- Monoprice Monolith M-15 V2 vs Rythmik F18
- Monoprice Monolith M-15 V2 vs Monoprice Monolith M15-S
- Monoprice Monolith M-15 V2 vs HSU Research VTF-3 MK5 HP
- Monoprice Monolith M-15 V2 vs HSU Research VTF-15H MK2
- Monoprice Monolith M-15 V2 vs Rythmik FV15HP
- Monoprice Monolith M-15 V2 vs Monoprice Monolith M-215
- Monoprice Monolith M-15 V2 vs Reaction Audio PV-15X
- See all 15 comparisons
- Links
As an Amazon Associate I earn from qualifying purchases.
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.