HSU Research VTF-3 MK5 HP vs Rythmik F18 (August 2026)

Q: Which is better, the HSU Research VTF-3 MK5 HP or the Rythmik F18?

Short answer: the HSU Research VTF-3 MK5 HP. It ranks #43 of 97 subwoofers at $1099; the Rythmik F18 ranks #60 and costs $1850, so there is not much of a tradeoff to weigh.

Q: Should I buy the HSU Research VTF-3 MK5 HP or the Rythmik F18?

Buy the HSU Research VTF-3 MK5 HP if the ranking matters more than the price. Buy the Rythmik F18 if the price matters more than the ranking.

Short answer: the HSU Research VTF-3 MK5 HP. It ranks #43 of 97 subwoofers at $1099; the Rythmik F18 ranks #60 and costs $1850, so there is not much of a tradeoff to weigh.

On the HSU Research VTF-3 MK5 HP side: Ported cabinet delivers 121.4dB CEA-2010-A average, one of the best price-to-output ratios in this weight class. The catch: Ported design requires careful room placement, mid-size 39 kg cabinet, and mid-range output.

Buy the HSU Research VTF-3 MK5 HP if the ranking matters more than the price. Buy the Rythmik F18 if the price matters more than the ranking.

Specifications Side By Side

	HSU Research VTF-3 MK5 HP	Rythmik F18
Price	$1,099	$1,850
Ranked	#43 of 97 in Large Powered Home Subwoofers (Over 75 lbs)	#60 of 97 in Large Powered Home Subwoofers (Over 75 lbs)
Enclosure	ported, front	sealed
Output SPL at 15 Hz	100.8 dB	102.0 dB
Output SPL at 20 Hz	108.2 dB	106.2 dB
Output SPL at 25 Hz	113.4 dB	110.9 dB
Output SPL at 31.5 Hz	118.2 dB	114.3 dB
Output SPL at 40 Hz	121.9 dB	117.1 dB
Output SPL at 50 Hz	122.3 dB	119.1 dB
Output SPL at 63 Hz	121.1 dB	120.5 dB
Output SPL at 80 Hz	120.4 dB	121.2 dB
CEA-2010-A Average (40-80Hz)	121.4 dB	119.5 dB
Dimensions	25.0"H x 17.25"W x 24.0"D (635.0 x 438.1 x 609.6 mm)	20.5"H x 20.5"W x 21.0"D (520.7 x 520.7 x 533.4 mm)
Weight	85.1 lbs / 38.6 kg	115.1 lbs / 52.2 kg
Warranty	7/2(+3)	5/3
Cabinet Color	black	black
Country	United States	United States
Measurement Source	Manufacturer	Data-bass
Drivers	15" (381mm) driver	18" (457mm) driver
Output SPL at 10 Hz	-	93.7 dB
Output SPL at 12.5 Hz	-	97.4 dB
Output SPL at 100 Hz	-	121.4 dB
Output SPL at 125 Hz	-	121.4 dB

The Two Speakers In Full

HSU Research VTF-3 MK5 HP: $1,099

Pros: Ported cabinet delivers 121.4dB CEA-2010-A average, one of the best price-to-output ratios in this weight class.

Cons: Ported design requires careful room placement, mid-size 39 kg cabinet, and mid-range output.

Notes: Price includes shipping

CEA-2010-A Average (40-80Hz)	121.4 dB
Cabinet Color	black
Country	United States
Dimensions	25.0"H x 17.25"W x 24.0"D (635.0 x 438.1 x 609.6 mm)
Drivers	15" (381mm) driver
Enclosure	ported, front
Measurement Source	Manufacturer
Output SPL at 15 Hz	100.8 dB
Output SPL at 20 Hz	108.2 dB
Output SPL at 25 Hz	113.4 dB
Output SPL at 31.5 Hz	118.2 dB
Output SPL at 40 Hz	121.9 dB
Output SPL at 50 Hz	122.3 dB
Output SPL at 63 Hz	121.1 dB
Output SPL at 80 Hz	120.4 dB
Warranty	7/2(+3)
Weight	85.1 lbs / 38.6 kg

Rythmik F18: $1,850

CEA-2010-A Average (40-80Hz)	119.5 dB
Cabinet Color	black
Country	United States
Dimensions	20.5"H x 20.5"W x 21.0"D (520.7 x 520.7 x 533.4 mm)
Drivers	18" (457mm) driver
Enclosure	sealed
Measurement Source	Data-bass
Output SPL at 10 Hz	93.7 dB
Output SPL at 12.5 Hz	97.4 dB
Output SPL at 15 Hz	102.0 dB
Output SPL at 20 Hz	106.2 dB
Output SPL at 25 Hz	110.9 dB
Output SPL at 31.5 Hz	114.3 dB
Output SPL at 40 Hz	117.1 dB
Output SPL at 50 Hz	119.1 dB
Output SPL at 63 Hz	120.5 dB
Output SPL at 80 Hz	121.2 dB
Output SPL at 100 Hz	121.4 dB
Output SPL at 125 Hz	121.4 dB
Warranty	5/3
Weight	115.1 lbs / 52.2 kg

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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.