JTR Speakers Captivator 4000ULF vs JTR Speakers Orbit Shifter LFU

Short answer: the JTR Speakers Orbit Shifter LFU. It ranks #2 of 110 subwoofers by sound quality, rated 4.6/5, at $6995. The JTR Speakers Captivator 4000ULF ranks #6, rated 4.5/5, at $5699, $1296 cheaper, not enough of a saving to outweigh the sound-quality gap.

Buy the JTR Speakers Orbit Shifter LFU. It is rated higher for sound quality, and saving $1296 with the JTR Speakers Captivator 4000ULF does not make up for the sound-quality gap.

Want more options? Browse the full Subwoofers rankings.

Specifications Side By Side

Related Speaker Comparisons

How JTR Speakers Orbit Shifter LFU compares with other leading options:

• 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 S2 vs JTR Speakers Orbit Shifter LFU
• JTR Speakers Orbit Shifter LFU vs Monoprice Monolith 16 THX Ultra
• 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.

As an eBay Partner, we may be compensated if you make a purchase.

The Two Speakers In Full

JTR Speakers Captivator 4000ULF: $5,000 JTR Speakers eBay

Pros: Independent CEA-2010 testing records 122.3 dB at 20 Hz and 130.8 dB through 40-80 Hz. The ported, front enclosure with 2x 18” (457mm) driver has the headroom for demanding film bass in a large room.

Cons: The 1041.4H x 520.7W x 1003.3D mm cabinet and 120.2 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 Captivator 4000ULF review and specifications →

AES Input	No
Aux Input	No
CEA-2010-A Average (40-80Hz)	130.8 dB
Cabinet Color	black, custom
Coaxial Input	No
Country	United States
Dimensions	41"H x 20.5"W x 39.5"D (1041.4 x 520.7 x 1003.3 mm)
Drivers	2x 18" (457mm) driver
Enclosure	ported, front
HDMI Input	No
Inputs	XLR, RCA
Measurement Source	Data-bass
Optical Input	No
Output SPL at 10 Hz	111.0 dB
Output SPL at 12.5 Hz	115.3 dB
Output SPL at 15 Hz	119.3 dB
Output SPL at 20 Hz	122.3 dB
Output SPL at 25 Hz	126.1 dB
Output SPL at 31.5 Hz	129.3 dB
Output SPL at 40 Hz	130.7 dB
Output SPL at 50 Hz	131.2 dB
Output SPL at 63 Hz	130.9 dB
Output SPL at 80 Hz	130.6 dB
Output SPL at 100 Hz	130.5 dB
Output SPL at 125 Hz	129.5 dB
RCA Input	Yes
TRS Input	No
USB Input	No
Warranty	5/3
Weight	265 lbs (120.2 kg)
XLR Input	Yes

• Links
  • JTR Speakers Captivator 4000ULF Website
• 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 Captivator 4000ULF vs JTR Speakers Captivator 215PRO
  • JTR Speakers Captivator 4000ULF vs Power Sound Audio (PSA) TRIAX
  • JTR Speakers Captivator 4000ULF vs Power Sound Audio (PSA) T18
  • JTR Speakers Captivator 4000ULF vs JTR Speakers Captivator S2
  • JTR Speakers Captivator 4000ULF vs JTR Speakers Orbit Shifter PRO
  • JTR Speakers Captivator 4000ULF vs Monoprice Monolith 16 THX Ultra
  • JTR Speakers Captivator 4000ULF vs Reaction Audio PV-15X
  • JTR Speakers Captivator 4000ULF vs Monoprice Monolith M-215
  • See all 15 comparisons

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 S2
  • JTR Speakers Orbit Shifter LFU vs Monoprice Monolith 16 THX Ultra
  • 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