JTR Speakers Captivator 1400 vs Rythmik F18

Last updated: September 16, 2026

Short answer: the JTR Speakers Captivator 1400 if sound quality matters most, the Rythmik F18 if price matters most. The JTR Speakers Captivator 1400 ranks #28 of 110 subwoofers at $2495. The Rythmik F18 ranks #69 at $2344, $151 cheaper.

JTR Speakers Captivator 1400 vs Rythmik F18

What the JTR Speakers Captivator 1400 offers: Independent CEA-2010 testing records 116.1 dB at 20 Hz and 125.2 dB through 40-80 Hz. The ported, front enclosure with 18” (457mm) driver has the headroom for demanding film bass in a large room. Watch for: The 508.0H x 762.0W x 571.5D mm cabinet and 64.4 kg mass make this a serious placement and moving commitment. Ported output does not solve room modes, so careful placement and calibration remain essential.

What the Rythmik F18 offers: Independent CEA-2010 testing records 106.2 dB at 20 Hz and 119.5 dB through 40-80 Hz. The sealed enclosure with 18” (457mm) driver has the headroom for demanding film bass in a large room. Watch for: The 520.7H x 520.7W x 533.4D mm cabinet and 52.2 kg mass make this a serious placement and moving commitment. A sealed cabinet still needs careful placement and calibration to avoid room-mode peaks.

Buy the JTR Speakers Captivator 1400 if sound quality is the priority over the price, or the Rythmik F18 if the price is the priority over sound quality.

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

Buy the Rythmik F18 at Rythmik Audio ($2,344) →

Specifications Side By Side

JTR Speakers Captivator 1400 Rythmik F18
Price$2495$1,850
Ranked#28 of 110 in Large Home Subwoofers (Over 75 lbs)#69 of 110 in Large Home Subwoofers (Over 75 lbs)
Enclosureported, frontsealed
Output SPL at 12.5 Hz99.3 dB97.4 dB
Output SPL at 15 Hz111.9 dB102.0 dB
Output SPL at 20 Hz116.1 dB106.2 dB
Output SPL at 25 Hz119.2 dB110.9 dB
Output SPL at 31.5 Hz121.7 dB114.3 dB
Output SPL at 40 Hz124.8 dB117.1 dB
Output SPL at 50 Hz126.4 dB119.1 dB
Output SPL at 63 Hz125.4 dB120.5 dB
Output SPL at 80 Hz124.0 dB121.2 dB
Output SPL at 100 Hz126.0 dB121.4 dB
Output SPL at 125 Hz124.7 dB121.4 dB
CEA-2010-A Average (40-80Hz)125.2 dB119.5 dB
Dimensions20"H x 30"W x 22.5"D (508.0 x 762.0 x 571.5 mm)20.5"H x 20.5"W x 21"D (520.7 x 520.7 x 533.4 mm)
Weight142 lbs (64.4 kg)115.1 lbs (52.2 kg)
Warranty5/35/3
CountryUnited StatesUnited States
Measurement SourceData-bassData-bass
Drivers18" (457mm) driver18" (457mm) driver
Output SPL at 10 Hz-93.7 dB
Cabinet Color-black
Buy the Rythmik F18 at Rythmik Audio ($2,344) →

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The Two Speakers In Full

JTR Speakers Captivator 1400: $2495 eBay

JTR Speakers Captivator 1400 ranking card

Pros: Independent CEA-2010 testing records 116.1 dB at 20 Hz and 125.2 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 508.0H x 762.0W x 571.5D mm cabinet and 64.4 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 1400 review and specifications →

CEA-2010-A Average (40-80Hz)125.2 dB
CountryUnited States
Dimensions20"H x 30"W x 22.5"D (508.0 x 762.0 x 571.5 mm)
Drivers18" (457mm) driver
Enclosureported, front
Measurement SourceData-bass
Output SPL at 12.5 Hz99.3 dB
Output SPL at 15 Hz111.9 dB
Output SPL at 20 Hz116.1 dB
Output SPL at 25 Hz119.2 dB
Output SPL at 31.5 Hz121.7 dB
Output SPL at 40 Hz124.8 dB
Output SPL at 50 Hz126.4 dB
Output SPL at 63 Hz125.4 dB
Output SPL at 80 Hz124.0 dB
Output SPL at 100 Hz126.0 dB
Output SPL at 125 Hz124.7 dB
Warranty5/3
Weight142 lbs (64.4 kg)
Search eBay for JTR Speakers Captivator 1400 →

Rythmik F18: $1,850 Rythmik Audio eBay

Rythmik F18 ranking card

Pros: Independent CEA-2010 testing records 106.2 dB at 20 Hz and 119.5 dB through 40-80 Hz. The sealed enclosure with 18” (457mm) driver has the headroom for demanding film bass in a large room.

Cons: The 520.7H x 520.7W x 533.4D mm cabinet and 52.2 kg mass make this a serious placement and moving commitment. A sealed cabinet still needs careful placement and calibration to avoid room-mode peaks.

Full Rythmik F18 review and specifications →

CEA-2010-A Average (40-80Hz)119.5 dB
Cabinet Colorblack
CountryUnited States
Dimensions20.5"H x 20.5"W x 21"D (520.7 x 520.7 x 533.4 mm)
Drivers18" (457mm) driver
Enclosuresealed
Measurement SourceData-bass
Output SPL at 10 Hz93.7 dB
Output SPL at 12.5 Hz97.4 dB
Output SPL at 15 Hz102.0 dB
Output SPL at 20 Hz106.2 dB
Output SPL at 25 Hz110.9 dB
Output SPL at 31.5 Hz114.3 dB
Output SPL at 40 Hz117.1 dB
Output SPL at 50 Hz119.1 dB
Output SPL at 63 Hz120.5 dB
Output SPL at 80 Hz121.2 dB
Output SPL at 100 Hz121.4 dB
Output SPL at 125 Hz121.4 dB
Warranty5/3
Weight115.1 lbs (52.2 kg)
Check current price at Rythmik Audio ($2,344) →Search eBay for Rythmik F18 →