Short answer: the Funk Audio Classic 18.0. Both are rated 4.4/5 for sound quality (#16 and #17 of 110 subwoofers), and the Funk Audio Classic 18.0 costs $4893.35 against $10078.84 for the Harbottle Audio C24 L2, so with nothing between them on sound quality, price settles it.
Buy the Funk Audio Classic 18.0. Both are rated the same for sound quality, and it costs $5185.49 less than the Harbottle Audio C24 L2.
Want more options? Browse the full Subwoofers rankings.
Specifications Side By Side
| Funk Audio Classic 18.0 | Harbottle Audio C24 L2 | |
|---|---|---|
| Price | $4,893.35 | $10,078.84 |
| Ranked | #16 of 110 in Large Home Subwoofers (Over 75 lbs) | #17 of 110 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | sealed | ported |
| Output SPL at 10 Hz | 94.6 dB | 99.0 dB |
| Output SPL at 12.5 Hz | 98.4 dB | 103.0 dB |
| Output SPL at 15 Hz | 102.3 dB | 110.0 dB |
| Output SPL at 20 Hz | 106.5 dB | 117.0 dB |
| Output SPL at 25 Hz | 111.7 dB | 120.7 dB |
| Output SPL at 31.5 Hz | 119.0 dB | 124.0 dB |
| Output SPL at 40 Hz | 124.6 dB | 126.3 dB |
| Output SPL at 50 Hz | 126.8 dB | 127.3 dB |
| Output SPL at 63 Hz | 128.4 dB | 126.7 dB |
| Output SPL at 80 Hz | 129.6 dB | 126.0 dB |
| Output SPL at 100 Hz | 130.2 dB | 125.0 dB |
| Output SPL at 125 Hz | 130.8 dB | - |
| CEA-2010-A Average (40-80Hz) | 127.3 dB | 126.6 dB |
| Dimensions | 22.5"H x 22"W x 20.5"D (571.5 x 558.8 x 520.7 mm) | 35.4"H x 28.4"W x 20.2"D (899.9 x 722.1 x 512.1 mm) |
| Weight | 115.1 lbs (52.2 kg) | 149.9 lbs (68.0 kg) |
| Warranty | 3 | - |
| Cabinet Color | wood, custom | black, white, red, blue |
| Country | Canada | Canada |
| Measurement Source | Data-bass | Manufacturer |
| Drivers | 18" (457mm) driver | 24" (610mm) driver |
| Inputs | XLR (balanced, with daisy-chain) | - |
| XLR Input | Yes | - |
| RCA Input | No | - |
| TRS Input | No | - |
| Optical Input | No | - |
| Coaxial Input | No | - |
| USB Input | No | - |
| HDMI Input | No | - |
| AES Input | No | - |
| Aux Input | No | - |
Related Speaker Comparisons
More top alternatives to Funk Audio Classic 18.0:
- JTR Speakers Captivator S2 vs Funk Audio Classic 18.0
- Funk Audio Classic 18.0 vs Funk Audio Ultra 24.0
- Funk Audio Classic 18.0 vs Funk Audio Custom 21.0
- JTR Speakers Growler (2015) vs Funk Audio Classic 18.0
- Harbinger V2218S vs 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
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 Input | No |
|---|---|
| Aux Input | No |
| CEA-2010-A Average (40-80Hz) | 127.3 dB |
| Cabinet Color | wood, custom |
| Coaxial Input | No |
| 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 |
| HDMI Input | No |
| Inputs | XLR (balanced, with daisy-chain) |
| Measurement Source | Data-bass |
| Optical Input | No |
| 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 |
| RCA Input | No |
| TRS Input | No |
| USB Input | No |
| Warranty | 3 |
| Weight | 115.1 lbs (52.2 kg) |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Independently measured by Data-bass; the published figures above come from this ASR subwoofer measurement thread.
- Head-to-Head Comparisons
- Funk Audio Classic 18.0 vs Harbinger V2218S
- Funk Audio Classic 18.0 vs Monoprice Monolith 16 THX Ultra
- Funk Audio Classic 18.0 vs JTR Speakers Growler (2015)
- Funk Audio Classic 18.0 vs Funk Audio Custom 21.0
- Funk Audio Classic 18.0 vs Funk Audio Ultra 24.0
- Funk Audio Classic 18.0 vs Rythmik FV25HP
- Funk Audio Classic 18.0 vs Monoprice Monolith M-215
- Funk Audio Classic 18.0 vs JTR Speakers Captivator S2
- See all 17 comparisons
Harbottle Audio C24 L2: $10,078.84 eBay
Pros: Published CEA-2010 specifications list 117.0 dB at 20 Hz and 126.6 dB through 40-80 Hz. The ported enclosure with 24” (610mm) driver has the headroom for demanding film bass in a large room.
Cons: The 899.9H x 722.1W x 512.1D mm cabinet and 68.0 kg mass make this a serious placement and moving commitment. Ported output does not solve room modes, so careful placement and calibration remain essential.
Full Harbottle Audio C24 L2 review and specifications →
| CEA-2010-A Average (40-80Hz) | 126.6 dB |
|---|---|
| Cabinet Color | black, white, red, blue |
| Country | Canada |
| Dimensions | 35.4"H x 28.4"W x 20.2"D (899.9 x 722.1 x 512.1 mm) |
| Drivers | 24" (610mm) driver |
| Enclosure | ported |
| Measurement Source | Manufacturer |
| Output SPL at 10 Hz | 99.0 dB |
| Output SPL at 12.5 Hz | 103.0 dB |
| Output SPL at 15 Hz | 110.0 dB |
| Output SPL at 20 Hz | 117.0 dB |
| Output SPL at 25 Hz | 120.7 dB |
| Output SPL at 31.5 Hz | 124.0 dB |
| Output SPL at 40 Hz | 126.3 dB |
| Output SPL at 50 Hz | 127.3 dB |
| Output SPL at 63 Hz | 126.7 dB |
| Output SPL at 80 Hz | 126.0 dB |
| Output SPL at 100 Hz | 125.0 dB |
| Weight | 149.9 lbs (68.0 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- These figures are manufacturer-specified rather than independently measured.
- Head-to-Head Comparisons