Short answer: the JTR Speakers Orbit Shifter LFU if sound quality matters most, the Reaction Audio PV-15X if price matters most. The JTR Speakers Orbit Shifter LFU ranks #2 of 110 subwoofers, rated 4.6/5, at $6995. The Reaction Audio PV-15X ranks #21, rated 4.4/5, at $1999, $4996 cheaper.
The case for the Reaction Audio PV-15X: 15-inch ported driver delivers 126.2dB CEA-2010-A average from a purpose-built cinema-style cabinet. The tradeoff: Passive design requires a separate external amplifier and weighs 68 kg (149.9 lbs).
Worth knowing: the Reaction Audio PV-15X is discontinued, though it still ranks #21 of 110 subwoofers by sound quality, so a used unit beats most of what is still sold new.
Buy the JTR Speakers Orbit Shifter LFU if sound quality is the priority over the price, or the Reaction Audio PV-15X if the price is the priority over sound quality.
Looking for alternatives? See the complete Subwoofers rankings.
Specifications Side By Side
| JTR Speakers Orbit Shifter LFU | Reaction Audio PV-15X | |
|---|---|---|
| Price | $6995 | $1999 Discontinued |
| Ranked | #2 of 110 in Large Home Subwoofers (Over 75 lbs) | #21 of 110 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | ported, front | ported, rear |
| Output SPL at 12.5 Hz | 96.5 dB | - |
| Output SPL at 15 Hz | 104.5 dB | 105.3 dB |
| Output SPL at 20 Hz | 118.6 dB | 111.3 dB |
| Output SPL at 25 Hz | 125.5 dB | 116.1 dB |
| Output SPL at 31.5 Hz | 128.0 dB | 119.8 dB |
| Output SPL at 40 Hz | 131.1 dB | 125.3 dB |
| Output SPL at 50 Hz | 132.1 dB | 126.8 dB |
| Output SPL at 63 Hz | 134.4 dB | 126.1 dB |
| Output SPL at 80 Hz | 137.8 dB | 126.5 dB |
| Output SPL at 100 Hz | 139.7 dB | 126.4 dB |
| Output SPL at 125 Hz | 138.0 dB | 126.1 dB |
| CEA-2010-A Average (40-80Hz) | 133.8 dB | 126.2 dB |
| Dimensions | 22.5"H x 50"W x 36"D (571.5 x 1270.0 x 914.4 mm) | 18"H x 22"W x 29"D (457.2 x 558.8 x 736.6 mm) |
| Country | United States | - |
| Measurement Source | Data-bass | Data-bass |
| Weight | 177 lbs (80.3 kg) | 149.9 lbs (68 kg) |
| Drivers | 18" (457mm) driver | 15" (381mm) driver |
| Warranty | 5 years | - |
| Discontinued | - | Yes |
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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 Monoprice Monolith 16 THX Ultra
- 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
Reaction Audio PV-15X: $1999 Discontinued eBay
Pros: 15-inch ported driver delivers 126.2dB CEA-2010-A average from a purpose-built cinema-style cabinet.
Cons: Passive design requires a separate external amplifier and weighs 68 kg. Discontinued.
Full Reaction Audio PV-15X review and specifications →
| CEA-2010-A Average (40-80Hz) | 126.2 dB |
|---|---|
| Dimensions | 18"H x 22"W x 29"D (457.2 x 558.8 x 736.6 mm) |
| Discontinued | Yes |
| Drivers | 15" (381mm) driver |
| Enclosure | ported, rear |
| Measurement Source | Data-bass |
| Output SPL at 15 Hz | 105.3 dB |
| Output SPL at 20 Hz | 111.3 dB |
| Output SPL at 25 Hz | 116.1 dB |
| Output SPL at 31.5 Hz | 119.8 dB |
| Output SPL at 40 Hz | 125.3 dB |
| Output SPL at 50 Hz | 126.8 dB |
| Output SPL at 63 Hz | 126.1 dB |
| Output SPL at 80 Hz | 126.5 dB |
| Output SPL at 100 Hz | 126.4 dB |
| Output SPL at 125 Hz | 126.1 dB |
| Weight | 149.9 lbs (68 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
- Reaction Audio PV-15X vs JTR Speakers Captivator 2400
- Reaction Audio PV-15X vs Funk Audio Ultra 21.0LX
- Reaction Audio PV-15X vs Monoprice Monolith M-215
- Reaction Audio PV-15X vs Monoprice Monolith 16 THX Ultra
- Reaction Audio PV-15X vs JBL 4645C
- Reaction Audio PV-15X vs Danley Sound Labs DTS10
- Reaction Audio PV-15X vs JTR Speakers Growler (2015)
- Reaction Audio PV-15X vs Chase Home Theater SS18.1
- See all 23 comparisons