Monoprice Monolith 16 THX Ultra vs Perlisten Audio D215s

Last updated: September 16, 2026

Short answer: the Monoprice Monolith 16 THX Ultra. It ranks #18 of 110 subwoofers by sound quality at $2300; the Perlisten Audio D215s ranks #37 and costs $9000, which makes this an easy call rather than a real tradeoff.

Monoprice Monolith 16 THX Ultra vs Perlisten Audio D215s

What the Monoprice Monolith 16 THX Ultra offers: 16-inch ported driver and THX Ultra certification deliver 126.5dB CEA-2010-A average at a fraction of the price of the subwoofers ranked above it. Watch for: Heavy at 78 kg and ported design can interact with room acoustics.

What the Perlisten Audio D215s offers: Independent CEA-2010 testing records 109.2 dB at 20 Hz and 123.2 dB through 40-80 Hz. The sealed enclosure with 2x 15” (381mm) drivers has the headroom for demanding film bass in a large room. Watch for: The 805.2H x 500.4W x 650.2D mm cabinet and 91.8 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 Monoprice Monolith 16 THX Ultra. It ranks higher for sound quality than the Perlisten Audio D215s and costs less, so the other one has nothing left to offer.

Looking for alternatives? See the complete Subwoofers rankings.

Specifications Side By Side

Monoprice Monolith 16 THX Ultra Perlisten Audio D215s
Price$2,300$9,000
Ranked#18 of 110 in Large Home Subwoofers (Over 75 lbs)#37 of 110 in Large Home Subwoofers (Over 75 lbs)
Enclosureported, frontsealed
Output SPL at 15 Hz107.3 dB104.3 dB
Output SPL at 20 Hz118.4 dB109.2 dB
Output SPL at 25 Hz123.3 dB113.3 dB
Output SPL at 31.5 Hz125.1 dB117.2 dB
Output SPL at 40 Hz126.3 dB120.8 dB
Output SPL at 50 Hz126.5 dB122.8 dB
Output SPL at 63 Hz126.6 dB124.0 dB
Output SPL at 80 Hz126.8 dB125.0 dB
Output SPL at 100 Hz127.2 dB125.6 dB
Output SPL at 125 Hz127.6 dB126.6 dB
CEA-2010-A Average (40-80Hz)126.5 dB123.2 dB
Dimensions25.6"H x 22"W x 28.1"D (650.2 x 558.8 x 713.7 mm)31.7"H x 19.7"W x 25.6"D (805.2 x 500.4 x 650.2 mm)
Weight171.5 lbs (77.8 kg)202.4 lbs (91.8 kg)
Warranty55
Cabinet Colorblackblack, custom
CountryUnited StatesUnited States
Measurement SourceAudioholicsAudioholics
Drivers16" (406mm) driver2x 15" (381mm) drivers
Output SPL at 10 Hz-93.0 dB
Output SPL at 12.5 Hz-98.8 dB

How Monoprice Monolith 16 THX Ultra compares with other leading options:

Prices on this page were last checked September 16, 2026 at 12:41 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.

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The Two Speakers In Full

Monoprice Monolith 16 THX Ultra: $2,300 eBay

Monoprice Monolith 16 THX Ultra ranking card

Pros: 16-inch ported driver and THX Ultra certification deliver 126.5dB CEA-2010-A average at a fraction of the price of the subwoofers ranked above it.

Cons: Heavy at 78 kg and ported design can interact with room acoustics.

Notes: Product # 42031

Full Monoprice Monolith 16 THX Ultra review and specifications →

CEA-2010-A Average (40-80Hz)126.5 dB
Cabinet Colorblack
CountryUnited States
Dimensions25.6"H x 22"W x 28.1"D (650.2 x 558.8 x 713.7 mm)
Drivers16" (406mm) driver
Enclosureported, front
Measurement SourceAudioholics
Output SPL at 15 Hz107.3 dB
Output SPL at 20 Hz118.4 dB
Output SPL at 25 Hz123.3 dB
Output SPL at 31.5 Hz125.1 dB
Output SPL at 40 Hz126.3 dB
Output SPL at 50 Hz126.5 dB
Output SPL at 63 Hz126.6 dB
Output SPL at 80 Hz126.8 dB
Output SPL at 100 Hz127.2 dB
Output SPL at 125 Hz127.6 dB
Warranty5
Weight171.5 lbs (77.8 kg)
Search eBay for Monoprice Monolith 16 THX Ultra →

Perlisten Audio D215s: $9,000 eBay

Perlisten Audio D215s ranking card

Pros: Independent CEA-2010 testing records 109.2 dB at 20 Hz and 123.2 dB through 40-80 Hz. The sealed enclosure with 2x 15” (381mm) drivers has the headroom for demanding film bass in a large room.

Cons: The 805.2H x 500.4W x 650.2D mm cabinet and 91.8 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 Perlisten Audio D215s review and specifications →

CEA-2010-A Average (40-80Hz)123.2 dB
Cabinet Colorblack, custom
CountryUnited States
Dimensions31.7"H x 19.7"W x 25.6"D (805.2 x 500.4 x 650.2 mm)
Drivers2x 15" (381mm) drivers
Enclosuresealed
Measurement SourceAudioholics
Output SPL at 10 Hz93.0 dB
Output SPL at 12.5 Hz98.8 dB
Output SPL at 15 Hz104.3 dB
Output SPL at 20 Hz109.2 dB
Output SPL at 25 Hz113.3 dB
Output SPL at 31.5 Hz117.2 dB
Output SPL at 40 Hz120.8 dB
Output SPL at 50 Hz122.8 dB
Output SPL at 63 Hz124.0 dB
Output SPL at 80 Hz125.0 dB
Output SPL at 100 Hz125.6 dB
Output SPL at 125 Hz126.6 dB
Warranty5
Weight202.4 lbs (91.8 kg)
Search eBay for Perlisten Audio D215s →