Sonos Sub 4 vs Rythmik LV12

Short answer: the Rythmik LV12 has been measured and ranked among subwoofers; the Sonos Sub 4 has not been independently measured yet, so until it is, this comes down to features and price.

What the Sonos Sub 4 offers: Two force-cancelling drivers face each other to cut cabinet buzz and rattle, and Sonos rates bass down to 25Hz.

What the Rythmik LV12 brings: 12-inch ported with 300W RMS, direct servo control extends 19Hz.

On paper: The Rythmik LV12 is rated down to 19Hz against 25Hz, though makers quote these at different tolerances.

Buy the Rythmik LV12 if you want a speaker whose sound quality has been measured and ranked. It also has deeper rated bass.

Buy the Sonos Sub 4 if you prefer its design or features, and you can wait for measurements to confirm how it sounds.

Want more options? Browse the full Subwoofers rankings.

Specifications Side By Side

Prices on this page were last checked September 29, 2026 at 3:43 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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The Two Speakers In Full

Sonos Sub 4: $899.00 Amazon eBay

Older model: the Sonos Sub (Gen 1) (rated 3.7/5).

Pros: Two force-cancelling drivers face each other to cut cabinet buzz and rattle, and Sonos rates bass down to 25Hz. Connects to a Sonos soundbar or speaker over Wi-Fi, so it can go anywhere with a power outlet, and sets up from the Sonos app.

Cons: No independent measurements yet, so its output can’t be compared with ranked subwoofers. It only works with Sonos soundbars and speakers, with no line-level input for any other system.

Full Sonos Sub 4 review and specifications →

Cabinet Color	black, white
Country	United States
Drivers	2x force-cancelling drivers
Enclosure	ported, force-cancelling
Frequency Response	25Hz extension (manufacturer specified)

• Links
  • Official Sonos Sub 4 Website
• Reviews, Comparisons and Sound Samples
  • These figures are manufacturer-specified rather than independently measured.
• Head-to-Head Comparisons
  • Sonos Sub 4 vs Sonos Sub (Gen 1)
  • Sonos Sub 4 vs SVS SB-2000
  • Sonos Sub 4 vs HSU Research ULS-15 MK2

Rythmik LV12: $899 Rythmik Audio eBay

Pros: 12-inch ported with 300W RMS, direct servo control extends 19Hz. Switchable Q settings (19Hz Low/22Hz Med/24Hz High) adjust bass response and loudness. 5-year driver warranty. Phase and crossover controls for flexible integration.

Full Rythmik LV12 review and specifications →

Amplifier Power	300W RMS
CEA-2010-A Average (40-80Hz)	120.3 dB
Cabinet Color	black
Country	United States
Dimensions	19.5”H x 15”W x 18.5”D (495.3 x 381.0 x 469.9 mm)
Drivers	12” (305mm) driver
Enclosure	ported, front
Frequency Response	19Hz-300Hz
Measurement Source	Brent Butterworth
Output SPL at 16 Hz	101.0 dB
Output SPL at 20 Hz	107.7 dB
Output SPL at 25 Hz	113.2 dB
Output SPL at 31.5 Hz	116.6 dB
Output SPL at 40 Hz	120.2 dB
Output SPL at 50 Hz	120.4 dB
Output SPL at 63 Hz	121.2 dB
Output SPL at 80 Hz	119.3 dB
Warranty	5/3
Weight	69 lbs (31.3 kg)

• Links
  • Official Rythmik LV12 Website
• Reviews, Comparisons and Sound Samples
  • Independently measured by Brent Butterworth; the published figures above come from this ASR subwoofer measurement thread.
• Head-to-Head Comparisons
  • Rythmik LV12 vs Monoprice SW-15
  • Rythmik LV12 vs SVS SB-3000
  • Rythmik LV12 vs KEF Kube 10 MIE
  • Rythmik LV12 vs KRK S12.4