Funk Audio Ultra 24.0 vs Monoprice Monolith M-215

Last updated: September 16, 2026

Short answer: the Funk Audio Ultra 24.0 on measured sound quality, the Monoprice Monolith M-215 on price. The Funk Audio Ultra 24.0 ranks #11 of 110 subwoofers at $9761.14. The Monoprice Monolith M-215 ranks #23 at $2999.99, $6761.15 cheaper.

Funk Audio Ultra 24.0 vs Monoprice Monolith M-215

What the Funk Audio Ultra 24.0 offers: Published CEA-2010 specifications list 120.0 dB at 20 Hz and 127.9 dB through 40-80 Hz. The sealed enclosure with 24” (610mm) driver has the headroom for demanding film bass in a large room. Watch for: The 787.4H x 660.4W x 609.6D mm cabinet and 135 kg mass make this a serious placement and moving commitment. A sealed cabinet still needs careful placement and calibration to avoid room-mode peaks.

What the Monoprice Monolith M-215 offers: Independent CEA-2010 testing records 118.9 dB at 20 Hz and 125.9 dB through 40-80 Hz. The ported, front enclosure with 2x 15” (381mm) drivers has the headroom for demanding film bass in a large room. Watch for: The 1074.4H x 508.0W x 701.0D mm cabinet and 98.0 kg mass make this a serious placement and moving commitment. Ported output does not solve room modes, so careful placement and calibration remain essential.

Buy the Funk Audio Ultra 24.0 if sound quality is the priority over the price, or the Monoprice Monolith M-215 if the price is the priority over sound quality.

Looking for alternatives? See the complete Subwoofers rankings.

Buy the Monoprice Monolith M-215 at Monoprice ($2999.99) →

Specifications Side By Side

Funk Audio Ultra 24.0 Monoprice Monolith M-215
Price$9,761.14$2999.99
Ranked#11 of 110 in Large Home Subwoofers (Over 75 lbs)#23 of 110 in Large Home Subwoofers (Over 75 lbs)
Enclosuresealedported, front
Output SPL at 10 Hz101.0 dB-
Output SPL at 12.5 Hz104.9 dB103.9 dB
Output SPL at 15 Hz111.8 dB113.1 dB
Output SPL at 20 Hz120.0 dB118.9 dB
Output SPL at 25 Hz122.0 dB122.6 dB
Output SPL at 31.5 Hz123.0 dB125.2 dB
Output SPL at 40 Hz127.1 dB126.4 dB
Output SPL at 50 Hz129.9 dB126.1 dB
Output SPL at 63 Hz127.6 dB125.6 dB
Output SPL at 80 Hz127.0 dB125.6 dB
Output SPL at 100 Hz128.2 dB125.7 dB
CEA-2010-A Average (40-80Hz)127.9 dB125.9 dB
Dimensions31"H x 26"W x 24"D (787.4 x 660.4 x 609.6 mm)42.3"H x 20"W x 27.6"D (1074.4 x 508.0 x 701.0 mm)
Warranty35
Cabinet Colorwood, customblack
CountryCanadaUnited States
Measurement SourceManufacturerBrent Butterworth
Weight297.6 lbs (135 kg)216.1 lbs (98.0 kg)
Drivers24" (610mm) driver2x 15" (381mm) drivers
Output SPL at 125 Hz-126.3 dB
Buy the Monoprice Monolith M-215 at Monoprice ($2999.99) →

More top alternatives to Funk Audio Ultra 24.0:

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.

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

The Two Speakers In Full

Funk Audio Ultra 24.0: $9,761.14 eBay

Funk Audio Ultra 24.0 ranking card

Pros: Published CEA-2010 specifications list 120.0 dB at 20 Hz and 127.9 dB through 40-80 Hz. The sealed enclosure with 24” (610mm) driver has the headroom for demanding film bass in a large room.

Cons: The 787.4H x 660.4W x 609.6D mm cabinet and 135 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 Funk Audio Ultra 24.0 review and specifications →

CEA-2010-A Average (40-80Hz)127.9 dB
Cabinet Colorwood, custom
CountryCanada
Dimensions31"H x 26"W x 24"D (787.4 x 660.4 x 609.6 mm)
Drivers24" (610mm) driver
Enclosuresealed
Measurement SourceManufacturer
Output SPL at 10 Hz101.0 dB
Output SPL at 12.5 Hz104.9 dB
Output SPL at 15 Hz111.8 dB
Output SPL at 20 Hz120.0 dB
Output SPL at 25 Hz122.0 dB
Output SPL at 31.5 Hz123.0 dB
Output SPL at 40 Hz127.1 dB
Output SPL at 50 Hz129.9 dB
Output SPL at 63 Hz127.6 dB
Output SPL at 80 Hz127.0 dB
Output SPL at 100 Hz128.2 dB
Warranty3
Weight297.6 lbs (135 kg)
Search eBay for Funk Audio Ultra 24.0 →

Monoprice Monolith M-215: $2999.99 Monoprice eBay

Monoprice Monolith M-215 ranking card

Pros: Independent CEA-2010 testing records 118.9 dB at 20 Hz and 125.9 dB through 40-80 Hz. The ported, front enclosure with 2x 15” (381mm) drivers has the headroom for demanding film bass in a large room.

Cons: The 1074.4H x 508.0W x 701.0D mm cabinet and 98.0 kg mass make this a serious placement and moving commitment. Ported output does not solve room modes, so careful placement and calibration remain essential.

Notes: Product # 38543

Full Monoprice Monolith M-215 review and specifications →

CEA-2010-A Average (40-80Hz)125.9 dB
Cabinet Colorblack
CountryUnited States
Dimensions42.3"H x 20"W x 27.6"D (1074.4 x 508.0 x 701.0 mm)
Drivers2x 15" (381mm) drivers
Enclosureported, front
Measurement SourceBrent Butterworth
Output SPL at 12.5 Hz103.9 dB
Output SPL at 15 Hz113.1 dB
Output SPL at 20 Hz118.9 dB
Output SPL at 25 Hz122.6 dB
Output SPL at 31.5 Hz125.2 dB
Output SPL at 40 Hz126.4 dB
Output SPL at 50 Hz126.1 dB
Output SPL at 63 Hz125.6 dB
Output SPL at 80 Hz125.6 dB
Output SPL at 100 Hz125.7 dB
Output SPL at 125 Hz126.3 dB
Warranty5
Weight216.1 lbs (98.0 kg)
Check current price at Monoprice ($2999.99) →Search eBay for Monoprice Monolith M-215 →