HSU Research VTF-15H MK2 vs JTR Speakers Captivator 4000ULF

Last updated: September 17, 2026

Short answer: the JTR Speakers Captivator 4000ULF if sound quality matters most, the HSU Research VTF-15H MK2 if price matters most. The JTR Speakers Captivator 4000ULF ranks #6 of 110 subwoofers, rated 4.5/5, at $5699. The HSU Research VTF-15H MK2 ranks #50, rated 4.2/5, at $1499, $4200 cheaper.

HSU Research VTF-15H MK2 vs JTR Speakers Captivator 4000ULF

What the HSU Research VTF-15H MK2 gets right: 15-inch ported driver delivers 121.8dB CEA-2010-A average from HSU Research’s long-running VTF series. The tradeoff: Ported enclosure prone to room modes at certain frequencies, mid-large 50 kg (110.2 lbs) size, and $1,500 price point.

Buy the HSU Research VTF-15H MK2 if the price matters more than sound quality. Buy the JTR Speakers Captivator 4000ULF if sound quality matters more than the price.

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

Buy the JTR Speakers Captivator 4000ULF at JTR Speakers ($5,699 each) →

Specifications Side By Side

HSU Research VTF-15H MK2 JTR Speakers Captivator 4000ULF
Price$1,499$5,000
Ranked#50 of 110 in Large Home Subwoofers (Over 75 lbs)#6 of 110 in Large Home Subwoofers (Over 75 lbs)
Enclosureported, frontported, front
Output SPL at 15 Hz101.6 dB119.3 dB
Output SPL at 20 Hz108.4 dB122.3 dB
Output SPL at 25 Hz114.8 dB126.1 dB
Output SPL at 31.5 Hz119.4 dB129.3 dB
Output SPL at 40 Hz122.9 dB130.7 dB
Output SPL at 50 Hz122.5 dB131.2 dB
Output SPL at 63 Hz121.1 dB130.9 dB
Output SPL at 80 Hz120.5 dB130.6 dB
CEA-2010-A Average (40-80Hz)121.8 dB130.8 dB
Dimensions24"H x 18"W x 26"D (609.6 x 457.2 x 660.4 mm)41"H x 20.5"W x 39.5"D (1041.4 x 520.7 x 1003.3 mm)
Weight110 lbs (49.9 kg)265 lbs (120.2 kg)
Warranty7/2(+3)5/3
Cabinet Colorblack, woodblack, custom
CountryUnited StatesUnited States
Measurement SourceManufacturerData-bass
Drivers15" (381mm) driver2x 18" (457mm) driver
Output SPL at 10 Hz-111.0 dB
Output SPL at 12.5 Hz-115.3 dB
Output SPL at 100 Hz-130.5 dB
Output SPL at 125 Hz-129.5 dB
Inputs-XLR, RCA
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
Buy the JTR Speakers Captivator 4000ULF at JTR Speakers ($5,699 each) →

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The Two Speakers In Full

HSU Research VTF-15H MK2: $1,499 eBay

HSU Research VTF-15H MK2 ranking card

Pros: 15-inch ported driver delivers 121.8dB CEA-2010-A average from HSU Research’s long-running VTF series.

Cons: Ported enclosure prone to room modes at certain frequencies, mid-large 50 kg size, and $1499 price point.

Notes: Price includes shipping

Full HSU Research VTF-15H MK2 review and specifications →

CEA-2010-A Average (40-80Hz)121.8 dB
Cabinet Colorblack, wood
CountryUnited States
Dimensions24"H x 18"W x 26"D (609.6 x 457.2 x 660.4 mm)
Drivers15" (381mm) driver
Enclosureported, front
Measurement SourceManufacturer
Output SPL at 15 Hz101.6 dB
Output SPL at 20 Hz108.4 dB
Output SPL at 25 Hz114.8 dB
Output SPL at 31.5 Hz119.4 dB
Output SPL at 40 Hz122.9 dB
Output SPL at 50 Hz122.5 dB
Output SPL at 63 Hz121.1 dB
Output SPL at 80 Hz120.5 dB
Warranty7/2(+3)
Weight110 lbs (49.9 kg)
Search eBay for HSU Research VTF-15H MK2 →

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

JTR Speakers Captivator 4000ULF ranking card

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 InputNo
Aux InputNo
CEA-2010-A Average (40-80Hz)130.8 dB
Cabinet Colorblack, custom
Coaxial InputNo
CountryUnited States
Dimensions41"H x 20.5"W x 39.5"D (1041.4 x 520.7 x 1003.3 mm)
Drivers2x 18" (457mm) driver
Enclosureported, front
HDMI InputNo
InputsXLR, RCA
Measurement SourceData-bass
Optical InputNo
Output SPL at 10 Hz111.0 dB
Output SPL at 12.5 Hz115.3 dB
Output SPL at 15 Hz119.3 dB
Output SPL at 20 Hz122.3 dB
Output SPL at 25 Hz126.1 dB
Output SPL at 31.5 Hz129.3 dB
Output SPL at 40 Hz130.7 dB
Output SPL at 50 Hz131.2 dB
Output SPL at 63 Hz130.9 dB
Output SPL at 80 Hz130.6 dB
Output SPL at 100 Hz130.5 dB
Output SPL at 125 Hz129.5 dB
RCA InputYes
TRS InputNo
USB InputNo
Warranty5/3
Weight265 lbs (120.2 kg)
XLR InputYes
Check current price at JTR Speakers ($5,699 each) →Search eBay for JTR Speakers Captivator 4000ULF →