JTR Speakers Captivator 215PRO vs JTR Speakers Captivator 4000ULF

Short answer: the JTR Speakers Captivator 215PRO. Both are rated 4.5/5 for sound quality (#7 and #6 of 139 subwoofers), and the JTR Speakers Captivator 215PRO costs $3,500 against $5,699 for the JTR Speakers Captivator 4000ULF, so with nothing between them on sound quality, price settles it.

Buy the JTR Speakers Captivator 215PRO. Both are rated the same for sound quality, and it costs $2,199 less than the JTR Speakers Captivator 4000ULF.

Still deciding? The full Subwoofers rankings cover every ranked option.

Specifications Side By Side

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Prices on this page were last checked October 7, 2026 at 9:25 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 Captivator 215PRO: $3,500 JTR Speakers eBay

Pros: Independent CEA-2010 testing records 106.6 dB at 20 Hz and 130.7 dB through 40-80 Hz. The ported, front enclosure with 2x 15” (381mm) drivers delivers formidable upper-bass output for movie effects and music.

Cons: Deep-bass output is more limited than the strong 40-80 Hz result suggests, so it is not the right choice when the lowest movie effects are the priority. The 1016.0H x 457.2W x 762.0D mm cabinet and 67.6 kg mass still require deliberate placement and calibration.

Notes: Looks like “PA sub”

Full JTR Speakers Captivator 215PRO review and specifications →

AES Input	No
Aux Input	No
CEA-2010-A Average (40-80Hz)	130.7 dB
Cabinet Color	black
Coaxial Input	No
Country	United States
Dimensions	40”H x 18”W x 30”D (1016.0 x 457.2 x 762.0 mm)
Drivers	2x 15” (381mm) drivers
Enclosure	ported, front
HDMI Input	No
Inputs	XLR, RCA
Measurement Source	Audioholics
Optical Input	No
Output SPL at 15 Hz	103.6 dB
Output SPL at 20 Hz	106.6 dB
Output SPL at 25 Hz	122.1 dB
Output SPL at 31.5 Hz	126.8 dB
Output SPL at 40 Hz	129.3 dB
Output SPL at 50 Hz	131.2 dB
Output SPL at 63 Hz	131.3 dB
Output SPL at 80 Hz	130.9 dB
Output SPL at 100 Hz	130.7 dB
Output SPL at 125 Hz	131.1 dB
RCA Input	Yes
TRS Input	No
USB Input	No
Warranty	5
Weight	149 lbs (67.6 kg)
XLR Input	Yes

• Links
  • JTR Speakers Captivator 215PRO Website
• Reviews, Comparisons and Sound Samples
  • Independently measured by Audioholics; the published figures above come from this ASR subwoofer measurement thread.
• Head-to-Head Comparisons
  • JTR Speakers Captivator 215PRO vs Power Sound Audio (PSA) T18
  • JTR Speakers Captivator 215PRO vs JTR Speakers Captivator S2
  • JTR Speakers Captivator 215PRO vs Power Sound Audio (PSA) TRIAX
  • JTR Speakers Captivator 215PRO vs Monoprice Monolith 16 THX Ultra
  • JTR Speakers Captivator 215PRO vs HSU Research VTF-3 MK5 HP

JTR Speakers Captivator 4000ULF: $5,699 each 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 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 LFU
  • 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
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