Funk Audio Classic 18.0 vs Monoprice Monolith 16 THX Ultra

Last updated: September 17, 2026

Short answer: the Monoprice Monolith 16 THX Ultra. Both are rated 4.4/5 for sound quality (#18 and #16 of 110 subwoofers), and the Monoprice Monolith 16 THX Ultra costs $2300 against $4893.35 for the Funk Audio Classic 18.0, with sound quality a draw, the lower price decides it.

Funk Audio Classic 18.0 vs Monoprice Monolith 16 THX Ultra

What the Monoprice Monolith 16 THX Ultra gets right: 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. Set against that: Heavy at 78 kg (172 lbs) and ported design can interact with room acoustics.

Buy the Monoprice Monolith 16 THX Ultra. Both are rated the same for sound quality, and it costs $2593.35 less than the Funk Audio Classic 18.0.

Looking for alternatives? See the complete Subwoofers rankings.

Specifications Side By Side

Funk Audio Classic 18.0 Monoprice Monolith 16 THX Ultra
Price$4,893.35$2,300
Ranked#16 of 110 in Large Home Subwoofers (Over 75 lbs)#18 of 110 in Large Home Subwoofers (Over 75 lbs)
Enclosuresealedported, front
Output SPL at 10 Hz94.6 dB-
Output SPL at 12.5 Hz98.4 dB-
Output SPL at 15 Hz102.3 dB107.3 dB
Output SPL at 20 Hz106.5 dB118.4 dB
Output SPL at 25 Hz111.7 dB123.3 dB
Output SPL at 31.5 Hz119.0 dB125.1 dB
Output SPL at 40 Hz124.6 dB126.3 dB
Output SPL at 50 Hz126.8 dB126.5 dB
Output SPL at 63 Hz128.4 dB126.6 dB
Output SPL at 80 Hz129.6 dB126.8 dB
Output SPL at 100 Hz130.2 dB127.2 dB
Output SPL at 125 Hz130.8 dB127.6 dB
CEA-2010-A Average (40-80Hz)127.3 dB126.5 dB
Dimensions22.5"H x 22"W x 20.5"D (571.5 x 558.8 x 520.7 mm)25.6"H x 22"W x 28.1"D (650.2 x 558.8 x 713.7 mm)
Weight115.1 lbs (52.2 kg)171.5 lbs (77.8 kg)
Warranty35
Cabinet Colorwood, customblack
CountryCanadaUnited States
Measurement SourceData-bassAudioholics
Drivers18" (457mm) driver16" (406mm) driver
InputsXLR (balanced, with daisy-chain)XLR, RCA, XLR out
XLR InputYesYes
RCA InputNoYes
TRS InputNoNo
Optical InputNoNo
Coaxial InputNoNo
USB InputNoNo
HDMI InputNoNo
AES InputNoNo
Aux InputNoNo

More worthwhile head-to-heads for Funk Audio Classic 18.0:

Prices on this page were last checked September 23, 2026 at 11:24 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

Funk Audio Classic 18.0: $4,893.35 eBay

Funk Audio Classic 18.0 ranking card

Pros: Independent CEA-2010 testing records 106.5 dB at 20 Hz and 127.3 dB through 40-80 Hz. The sealed enclosure with 18” (457mm) driver delivers formidable upper-bass output for movie effects and music.

Cons: Deep-bass output is more limited than the strong 40-80 Hz result suggests, so it is not the right choice when the lowest movie effects are the priority. The 571.5H x 558.8W x 520.7D mm cabinet and 52.2 kg mass still require deliberate placement and calibration.

Notes: Data-bass labeled this sub as ‘FW18.0’, but original name is 18.0

Full Funk Audio Classic 18.0 review and specifications →

AES InputNo
Aux InputNo
CEA-2010-A Average (40-80Hz)127.3 dB
Cabinet Colorwood, custom
Coaxial InputNo
CountryCanada
Dimensions22.5"H x 22"W x 20.5"D (571.5 x 558.8 x 520.7 mm)
Drivers18" (457mm) driver
Enclosuresealed
HDMI InputNo
InputsXLR (balanced, with daisy-chain)
Measurement SourceData-bass
Optical InputNo
Output SPL at 10 Hz94.6 dB
Output SPL at 12.5 Hz98.4 dB
Output SPL at 15 Hz102.3 dB
Output SPL at 20 Hz106.5 dB
Output SPL at 25 Hz111.7 dB
Output SPL at 31.5 Hz119.0 dB
Output SPL at 40 Hz124.6 dB
Output SPL at 50 Hz126.8 dB
Output SPL at 63 Hz128.4 dB
Output SPL at 80 Hz129.6 dB
Output SPL at 100 Hz130.2 dB
Output SPL at 125 Hz130.8 dB
RCA InputNo
TRS InputNo
USB InputNo
Warranty3
Weight115.1 lbs (52.2 kg)
XLR InputYes
Search eBay for Funk Audio Classic 18.0 →

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 →

AES InputNo
Aux InputNo
CEA-2010-A Average (40-80Hz)126.5 dB
Cabinet Colorblack
Coaxial InputNo
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
HDMI InputNo
InputsXLR, RCA, XLR out
Measurement SourceAudioholics
Optical InputNo
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
RCA InputYes
TRS InputNo
USB InputNo
Warranty5
Weight171.5 lbs (77.8 kg)
XLR InputYes
Search eBay for Monoprice Monolith 16 THX Ultra →