Funk Audio Classic 18.0 vs Funk Audio Ultra 24.0

Short answer: the Funk Audio Ultra 24.0 on measured sound quality, the Funk Audio Classic 18.0 on price. The Funk Audio Ultra 24.0 ranks #9 of 97 subwoofers at $9761.14. The Funk Audio Classic 18.0 ranks #11 at $4893.35, $4867.79 cheaper.

Buy the Funk Audio Classic 18.0 when the price outweighs sound quality for you, and the Funk Audio Ultra 24.0 when sound quality outweighs the price instead.

Specifications Side By Side

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• Funk Audio Ultra 24.0 vs JTR Speakers Captivator S2
• Funk Audio Ultra 24.0 vs Power Sound Audio (PSA) V3600I
• Funk Audio Custom 21.0 vs Funk Audio Ultra 24.0
• Funk Audio Classic 18.0 vs Harbottle Audio C24 L2
• Funk Audio Classic 18.0 vs Funk Audio Custom 21.0

Prices on this page were last checked September 8, 2026 at 6:02 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

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 →

CEA-2010-A Average (40-80Hz)	127.3 dB
Cabinet Color	wood, custom
Country	Canada
Dimensions	22.5"H x 22"W x 20.5"D (571.5 x 558.8 x 520.7 mm)
Drivers	18" (457mm) driver
Enclosure	sealed
Measurement Source	Data-bass
Output SPL at 10 Hz	94.6 dB
Output SPL at 12.5 Hz	98.4 dB
Output SPL at 15 Hz	102.3 dB
Output SPL at 20 Hz	106.5 dB
Output SPL at 25 Hz	111.7 dB
Output SPL at 31.5 Hz	119.0 dB
Output SPL at 40 Hz	124.6 dB
Output SPL at 50 Hz	126.8 dB
Output SPL at 63 Hz	128.4 dB
Output SPL at 80 Hz	129.6 dB
Output SPL at 100 Hz	130.2 dB
Output SPL at 125 Hz	130.8 dB
Warranty	3
Weight	115.1 lbs / 52.2 kg

• Links
  • Funk Audio Classic 18.0 Website
• Reviews, Comparisons and Sound Samples
• Head-to-Head Comparisons
  • Funk Audio Classic 18.0 vs Funk Audio Custom 21.0
  • Funk Audio Classic 18.0 vs Harbottle Audio C24 L2
  • Funk Audio Classic 18.0 vs Monoprice Monolith 16 THX Ultra

Funk Audio Ultra 24.0: $9,761.14 eBay

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 Color	wood, custom
Country	Canada
Dimensions	31"H x 26"W x 24"D (787.4 x 660.4 x 609.6 mm)
Drivers	24" (610mm) driver
Enclosure	sealed
Measurement Source	Manufacturer
Output SPL at 10 Hz	101.0 dB
Output SPL at 12.5 Hz	104.9 dB
Output SPL at 15 Hz	111.8 dB
Output SPL at 20 Hz	120.0 dB
Output SPL at 25 Hz	122.0 dB
Output SPL at 31.5 Hz	123.0 dB
Output SPL at 40 Hz	127.1 dB
Output SPL at 50 Hz	129.9 dB
Output SPL at 63 Hz	127.6 dB
Output SPL at 80 Hz	127.0 dB
Output SPL at 100 Hz	128.2 dB
Warranty	3
Weight	297.6 lbs / 135 kg

• Links
  • Funk Audio Ultra 24.0 Website
• Reviews, Comparisons and Sound Samples
• Head-to-Head Comparisons
  • Funk Audio Ultra 24.0 vs Funk Audio Custom 21.0
  • Funk Audio Ultra 24.0 vs Power Sound Audio (PSA) V3600I
  • Funk Audio Ultra 24.0 vs JTR Speakers Captivator S2