JTR Speakers Captivator 4000ULF vs JTR Speakers Captivator S2

Short answer: the JTR Speakers Captivator 4000ULF for the higher ranking, the JTR Speakers Captivator S2 for the lower price. The JTR Speakers Captivator 4000ULF ranks #4 of 97 subwoofers at $5000. The JTR Speakers Captivator S2 ranks #7 at $3995, $1005 cheaper.

Buy the JTR Speakers Captivator 4000ULF if the ranking matters more than the price. Buy the JTR Speakers Captivator S2 if the price matters more than the ranking.

Specifications Side By Side

The Two Speakers In Full

JTR Speakers Captivator 4000ULF: $5,000

CEA-2010-A Average (40-80Hz)	130.8 dB
Cabinet Color	black, custom
Country	United States
Dimensions	41.0"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
Measurement Source	Data-bass
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
Warranty	5/3
Weight	265 lbs / 120.2 kg

• Head-to-Head Comparisons
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  • See all 15 comparisons
• Links
  • JTR Speakers Captivator 4000ULF Website
  • Reddit Search for JTR Speakers Captivator 4000ULF
  • Direct Speakerranking Link

JTR Speakers Captivator S2: $3995

Notes: Replaced by “RS2”

CEA-2010-A Average (40-80Hz)	129.4 dB
Country	United States
Dimensions	40.0"H x 21.0"W x 18.0"D (1016.0 x 533.4 x 457.2 mm)
Drivers	2x 18" (457mm) drivers
Enclosure	sealed
Measurement Source	Data-bass
Output SPL at 10 Hz	100.3 dB
Output SPL at 12.5 Hz	103.3 dB
Output SPL at 15 Hz	108.7 dB
Output SPL at 20 Hz	115.1 dB
Output SPL at 25 Hz	119.7 dB
Output SPL at 31.5 Hz	124.8 dB
Output SPL at 40 Hz	129.3 dB
Output SPL at 50 Hz	130.3 dB
Output SPL at 63 Hz	129.4 dB
Output SPL at 80 Hz	128.5 dB
Output SPL at 100 Hz	128.1 dB
Output SPL at 125 Hz	128.0 dB
Warranty	5/3
Weight	220 lbs / 99.8 kg

• Head-to-Head Comparisons
  • JTR Speakers Captivator S2 vs Power Sound Audio (PSA) T18
  • JTR Speakers Captivator S2 vs Power Sound Audio (PSA) V3600I
  • JTR Speakers Captivator S2 vs Funk Audio Ultra 24.0
  • JTR Speakers Captivator S2 vs JTR Speakers Captivator 215PRO
  • JTR Speakers Captivator S2 vs Power Sound Audio (PSA) TRIAX
  • JTR Speakers Captivator S2 vs JTR Speakers Orbit Shifter LFU
  • JTR Speakers Captivator S2 vs JTR Speakers Orbit Shifter PRO
  • JTR Speakers Captivator S2 vs Monoprice Monolith 16 THX Ultra
  • See all 17 comparisons
• Links
  • JTR Speakers Captivator S2 Website
  • Reddit Search for JTR Speakers Captivator S2
  • Direct Speakerranking Link

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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.