Monoprice Monolith M-15 V2 Review: Ranked #64 of 110

Last updated: September 13, 2026

The Monoprice Monolith M-15 V2 ranks #64 out of 110 total Large Home Subwoofers (Over 75 lbs) for sound quality. See all Subwoofers rankings for every top pick.

Brand: Monoprice

Prices on this page were last checked September 14, 2026 at 1:47 AM 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.

As an eBay Partner, we may be compensated if you make a purchase.

Monoprice Monolith M-15 V2 - ranked #64 of 110 Large Home Subwoofers (Over 75 lbs) · Editor's rating 4.2/5

#64 Monoprice Monolith M-15 V2: $1,500 Discontinued eBay

Pros: Published CEA-2010 specifications list 112.6 dB at 20 Hz and 120.0 dB through 40-80 Hz. Its front-ported 15-inch design has substantial deep-bass and midbass headroom for cinema playback.

Cons: Discontinued and no longer sold new. At 60.3 kg and 729.0H x 449.6W x 680.7D mm, it needs committed floor space and careful room integration. Discontinued.

Notes: Product # 42851

How it compares: Just above it: SVS SB-4000 - $300 more. Just below it: Klipsch R-115SW - $701 cheaper, 3.1dB more max output.

CEA-2010-A Average (40-80Hz)120.0 dB
Cabinet Colorblack
CountryUnited States
Dimensions28.7"H x 17.7"W x 26.8"D (729.0 x 449.6 x 680.7 mm)
DiscontinuedYes
Drivers15" (381mm) driver
Enclosureported, front
Measurement SourceManufacturer
Output SPL at 12.5 Hz91.0 dB
Output SPL at 15 Hz106.3 dB
Output SPL at 20 Hz112.6 dB
Output SPL at 25 Hz116.6 dB
Output SPL at 31.5 Hz119.5 dB
Output SPL at 40 Hz120.9 dB
Output SPL at 50 Hz120.6 dB
Output SPL at 63 Hz120.0 dB
Output SPL at 80 Hz118.7 dB
Output SPL at 100 Hz120.1 dB
Output SPL at 125 Hz120.2 dB
Warranty5
Weight132.9 lbs (60.3 kg)
Search eBay for Monoprice Monolith M-15 V2 →

More Monoprice speakers →