HSU Research VTF-3 MK5 HP vs RBH Sound SX-12

Last updated: August 9, 2026

Short answer: the HSU Research VTF-3 MK5 HP ranks #43 of 97 subwoofers at $1099; the RBH Sound SX-12 ranks #30 at $1099. Close enough in price that the ranking gap is the deciding factor.

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

On the RBH Sound SX-12 side: 12-inch aluminum-cone ported with 350W RMS earns Large-room Bassaholic rating.

One note: the RBH Sound SX-12 is discontinued, but it still ranks #30 of 137 subwoofers, ahead of most of what is still sold new, so it is worth considering used.

Buy the HSU Research VTF-3 MK5 HP if the price matters more than the ranking. Buy the RBH Sound SX-12 if the ranking matters more than the price.

Specifications Side By Side

HSU Research VTF-3 MK5 HP RBH Sound SX-12
Price$1,099$1099 Discontinued
Ranked#43 of 97 in Large Powered Home Subwoofers (Over 75 lbs)#30 of 137 in Medium Powered Home Subwoofers (30-75 lbs)
Enclosureported, frontported, bottom
Output SPL at 15 Hz100.8 dB-
Output SPL at 20 Hz108.2 dB90.7 dB
Output SPL at 25 Hz113.4 dB101.0 dB
Output SPL at 31.5 Hz118.2 dB111.0 dB
Output SPL at 40 Hz121.9 dB114.1 dB
Output SPL at 50 Hz122.3 dB116.7 dB
Output SPL at 63 Hz121.1 dB115.7 dB
Output SPL at 80 Hz120.4 dB115.1 dB
CEA-2010-A Average (40-80Hz)121.4 dB115.4 dB
Dimensions25.0"H x 17.25"W x 24.0"D (635.0 x 438.1 x 609.6 mm)19.62"H x 17.7"W x 21.12"D (498.3 x 449.6 x 536.4 mm)
Weight85.1 lbs / 38.6 kg52.9 lbs / 24.0 kg
Warranty7/2(+3)5/1(+5/+3)
Cabinet Colorblack-
CountryUnited StatesUnited States
Measurement SourceManufacturerAudioholics
Drivers15" (381mm) driver12" (305mm) driver
Output SPL at 100 Hz-114.7 dB
Output SPL at 125 Hz-114.6 dB
Discontinued-Yes
Frequency Response-27Hz (flat)
Power Output (Watts)-350W RMS

The Two Speakers In Full

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

HSU Research VTF-3 MK5 HP ranking card

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 Colorblack
CountryUnited States
Dimensions25.0"H x 17.25"W x 24.0"D (635.0 x 438.1 x 609.6 mm)
Drivers15" (381mm) driver
Enclosureported, front
Measurement SourceManufacturer
Output SPL at 15 Hz100.8 dB
Output SPL at 20 Hz108.2 dB
Output SPL at 25 Hz113.4 dB
Output SPL at 31.5 Hz118.2 dB
Output SPL at 40 Hz121.9 dB
Output SPL at 50 Hz122.3 dB
Output SPL at 63 Hz121.1 dB
Output SPL at 80 Hz120.4 dB
Warranty7/2(+3)
Weight85.1 lbs / 38.6 kg

RBH Sound SX-12: $1099 Discontinued

RBH Sound SX-12 ranking card

Pros: 12-inch aluminum-cone ported with 350W RMS earns Large-room Bassaholic rating. Excellent musical performance with refined high-fidelity characteristics. Graceful side panel curves reduce standing waves. Impressive power without sacrificing musicality.

Cons: Discontinued.

CEA-2010-A Average (40-80Hz)115.4 dB
CountryUnited States
Dimensions19.62"H x 17.7"W x 21.12"D (498.3 x 449.6 x 536.4 mm)
DiscontinuedYes
Drivers12" (305mm) driver
Enclosureported, bottom
Frequency Response27Hz (flat)
Measurement SourceAudioholics
Output SPL at 20 Hz90.7 dB
Output SPL at 25 Hz101.0 dB
Output SPL at 31.5 Hz111.0 dB
Output SPL at 40 Hz114.1 dB
Output SPL at 50 Hz116.7 dB
Output SPL at 63 Hz115.7 dB
Output SPL at 80 Hz115.1 dB
Output SPL at 100 Hz114.7 dB
Output SPL at 125 Hz114.6 dB
Power Output (Watts)350W RMS
Warranty5/1(+5/+3)
Weight52.9 lbs / 24.0 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.