JTR Speakers Captivator S2 vs Rythmik FV18

Last updated: October 21, 2026

Short answer: the Rythmik FV18, if you are buying new. The JTR Speakers Captivator S2 ranks higher than it (#9 vs #60 of 143 subwoofers, 4.5/5 vs 4.2/5) but is discontinued, so only consider it used; the Rythmik FV18 is still sold new at $2,670.

JTR Speakers Captivator S2 vs Rythmik FV18

Why pick the JTR Speakers Captivator S2: A tall sealed subwoofer with two 18 inch drivers and serious deep bass output for demanding movies in a large room. The tradeoff: The 1016.0H x 533.4W x 457.2D mm cabinet and 220 lbs (99.8 kg) mass make this a serious placement and moving commitment.

Why pick the Rythmik FV18: An 18 inch ported subwoofer with deep, powerful bass for large rooms and flexible balanced and RCA inputs. The catch: The 838.2H x 533.4W x 558.8D mm cabinet and 160.1 lbs (72.6 kg) mass make this a serious placement and moving commitment.

Buy the Rythmik FV18, since the JTR Speakers Captivator S2 is discontinued and only worth hunting down used.

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

JTR Speakers Captivator S2 Discontinued

A tall sealed subwoofer with two 18 inch drivers and serious deep bass output for demanding movies in a large room.

Driver: 2x 18"Enclosure: SealedOutput 40-80 Hz: 129.4 dBWeight: 220 lbs
eBay
$3,995
Rythmik FV18

An 18 inch ported subwoofer with deep, powerful bass for large rooms and flexible balanced and RCA inputs.

Driver: 18"Enclosure: PortedOutput 40-80 Hz: 121.3 dBWeight: 160.1 lbs
Rythmik Audio $2,670 eBay
$2,670

Prices on this page were last checked October 31, 2026 at 7:11 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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Specifications Side By Side

JTR Speakers Captivator S2 Rythmik FV18
Price$3,995 Discontinued$2,670
Ranked#9 of 143 in Large Home Subwoofers (Over 75 lbs)#60 of 143 in Large Home Subwoofers (Over 75 lbs)
Enclosuresealedported, front
Output SPL at 10 Hz100.3 dB-
Output SPL at 12.5 Hz103.3 dB102.0 dB
Output SPL at 15 Hz108.7 dB109.5 dB
Output SPL at 20 Hz115.1 dB114.3 dB
Output SPL at 25 Hz119.7 dB117.6 dB
Output SPL at 31.5 Hz124.8 dB119.2 dB
Output SPL at 40 Hz129.3 dB120.4 dB
Output SPL at 50 Hz130.3 dB121.3 dB
Output SPL at 63 Hz129.4 dB121.7 dB
Output SPL at 80 Hz128.5 dB121.9 dB
Output SPL at 100 Hz128.1 dB122.4 dB
Output SPL at 125 Hz128.0 dB121.9 dB
CEA-2010-A Average (40-80Hz)129.4 dB121.3 dB
Dimensions40”H x 21”W x 18”D (1016.0 x 533.4 x 457.2 mm)33”H x 21”W x 22”D (838.2 x 533.4 x 558.8 mm)
Weight220 lbs (99.8 kg)160.1 lbs (72.6 kg)
Warranty5/35/3
CountryUnited StatesUnited States
Measurement SourceData-bassData-bass
Drivers2x 18” (457mm) drivers18” (457mm) driver
InputsXLR (balanced), RCAXLR (2), RCA (line/LFE)
XLR InputYesYes
RCA InputYesYes
TRS InputNoNo
Optical InputNoNo
Coaxial InputNoNo
USB InputNoNo
HDMI InputNoNo
AES InputNoNo
Aux InputNoNo
Cabinet Color-black

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