Short answer: the JTR Speakers Orbit Shifter LFU if sound quality matters most, the Monoprice Monolith 16 THX Ultra if price matters most. The JTR Speakers Orbit Shifter LFU ranks #2 of 110 subwoofers, rated 4.6/5, at $6995. The Monoprice Monolith 16 THX Ultra ranks #18, rated 4.4/5, at $2300, $4695 cheaper.
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. The tradeoff: Heavy at 78 kg (172 lbs) and ported design can interact with room acoustics.
Buy the JTR Speakers Orbit Shifter LFU when sound quality outweighs the price for you, and the Monoprice Monolith 16 THX Ultra when the price outweighs sound quality instead.
Still deciding? The full Subwoofers rankings cover every ranked option.
Specifications Side By Side
| JTR Speakers Orbit Shifter LFU | Monoprice Monolith 16 THX Ultra | |
|---|---|---|
| Price | $6995 | $2,300 |
| Ranked | #2 of 110 in Large Home Subwoofers (Over 75 lbs) | #18 of 110 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | ported, front | ported, front |
| Output SPL at 12.5 Hz | 96.5 dB | - |
| Output SPL at 15 Hz | 104.5 dB | 107.3 dB |
| Output SPL at 20 Hz | 118.6 dB | 118.4 dB |
| Output SPL at 25 Hz | 125.5 dB | 123.3 dB |
| Output SPL at 31.5 Hz | 128.0 dB | 125.1 dB |
| Output SPL at 40 Hz | 131.1 dB | 126.3 dB |
| Output SPL at 50 Hz | 132.1 dB | 126.5 dB |
| Output SPL at 63 Hz | 134.4 dB | 126.6 dB |
| Output SPL at 80 Hz | 137.8 dB | 126.8 dB |
| Output SPL at 100 Hz | 139.7 dB | 127.2 dB |
| Output SPL at 125 Hz | 138.0 dB | 127.6 dB |
| CEA-2010-A Average (40-80Hz) | 133.8 dB | 126.5 dB |
| Dimensions | 22.5"H x 50"W x 36"D (571.5 x 1270.0 x 914.4 mm) | 25.6"H x 22"W x 28.1"D (650.2 x 558.8 x 713.7 mm) |
| Country | United States | United States |
| Measurement Source | Data-bass | Audioholics |
| Weight | 177 lbs (80.3 kg) | 171.5 lbs (77.8 kg) |
| Drivers | 18" (457mm) driver | 16" (406mm) driver |
| Warranty | 5 years | 5 |
| Cabinet Color | - | black |
| Inputs | - | XLR, RCA, XLR out |
| XLR Input | - | Yes |
| RCA Input | - | Yes |
| TRS Input | - | No |
| Optical Input | - | No |
| Coaxial Input | - | No |
| USB Input | - | No |
| HDMI Input | - | No |
| AES Input | - | No |
| Aux Input | - | No |
Related Speaker Comparisons
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- JTR Speakers Orbit Shifter LFU vs JTR Speakers Orbit Shifter PRO
- JTR Speakers Orbit Shifter LFU vs Power Sound Audio (PSA) TRIAX
- JTR Speakers Captivator 4000ULF vs JTR Speakers Orbit Shifter LFU
- JTR Speakers Captivator S2 vs JTR Speakers Orbit Shifter LFU
- JTR Speakers Orbit Shifter LFU vs Reaction Audio PV-15X
Prices on this page were last checked September 23, 2026 at 11:24 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
JTR Speakers Orbit Shifter LFU: $6995 eBay
Pros: Independent CEA-2010 testing records 118.6 dB at 20 Hz and 133.8 dB through 40-80 Hz. The ported, front enclosure with 18” (457mm) driver has the headroom for demanding film bass in a large room.
Cons: The 571.5H x 1270.0W x 914.4D mm cabinet and 80.3 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 JTR Speakers Orbit Shifter LFU review and specifications →
| CEA-2010-A Average (40-80Hz) | 133.8 dB |
|---|---|
| Country | United States |
| Dimensions | 22.5"H x 50"W x 36"D (571.5 x 1270.0 x 914.4 mm) |
| Drivers | 18" (457mm) driver |
| Enclosure | ported, front |
| Measurement Source | Data-bass |
| Output SPL at 12.5 Hz | 96.5 dB |
| Output SPL at 15 Hz | 104.5 dB |
| Output SPL at 20 Hz | 118.6 dB |
| Output SPL at 25 Hz | 125.5 dB |
| Output SPL at 31.5 Hz | 128.0 dB |
| Output SPL at 40 Hz | 131.1 dB |
| Output SPL at 50 Hz | 132.1 dB |
| Output SPL at 63 Hz | 134.4 dB |
| Output SPL at 80 Hz | 137.8 dB |
| Output SPL at 100 Hz | 139.7 dB |
| Output SPL at 125 Hz | 138.0 dB |
| Warranty | 5 years |
| Weight | 177 lbs (80.3 kg) |
- Reviews, Comparisons and Sound Samples
- Independently measured by Data-bass; the published figures above come from this ASR subwoofer measurement thread.
- Head-to-Head Comparisons
- JTR Speakers Orbit Shifter LFU vs JTR Speakers Orbit Shifter PRO
- JTR Speakers Orbit Shifter LFU vs Power Sound Audio (PSA) TRIAX
- JTR Speakers Orbit Shifter LFU vs JTR Speakers Captivator 4000ULF
- JTR Speakers Orbit Shifter LFU vs JTR Speakers Captivator S2
- JTR Speakers Orbit Shifter LFU vs Reaction Audio PV-15X
- JTR Speakers Orbit Shifter LFU vs Monoprice Monolith M-215
- JTR Speakers Orbit Shifter LFU vs Rythmik FV15HP
- JTR Speakers Orbit Shifter LFU vs HSU Research VTF-15H MK2
- See all 13 comparisons
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 →
| AES Input | No |
|---|---|
| Aux Input | No |
| CEA-2010-A Average (40-80Hz) | 126.5 dB |
| Cabinet Color | black |
| Coaxial Input | No |
| 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 |
| HDMI Input | No |
| Inputs | XLR, RCA, XLR out |
| Measurement Source | Audioholics |
| Optical Input | No |
| 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 |
| RCA Input | Yes |
| TRS Input | No |
| USB Input | No |
| Warranty | 5 |
| Weight | 171.5 lbs (77.8 kg) |
| XLR Input | Yes |
- 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
- 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 Harbinger V2218S
- Monoprice Monolith 16 THX Ultra vs Danley Sound Labs DTS10
- Monoprice Monolith 16 THX Ultra vs Rythmik FV25HP
- See all 88 comparisons