Short answer: the Harbottle Audio C24 L2 for better sound quality, the HSU Research VTF-3 MK5 HP for the lower price. The Harbottle Audio C24 L2 ranks #18 of 143 subwoofers, rated 4.4/5, at $10,078.84. The HSU Research VTF-3 MK5 HP ranks #59, rated 4.2/5, at $1,049, $9,029.84 cheaper.
The case for the HSU Research VTF-3 MK5 HP: A 15 inch ported subwoofer with excellent output for the money, a strong value pick for movies and music. The tradeoff: Ported design requires careful room placement, mid-size 86 lbs (39 kg) cabinet, and mid-range output.
What the Harbottle Audio C24 L2 does well: A 24 inch ported subwoofer with deep, powerful bass and plenty of headroom for demanding film soundtracks in large rooms. The tradeoff: The 899.9H x 722.1W x 512.1D mm cabinet and 149.9 lbs (68.0 kg) mass make this a serious placement and moving commitment.
Buy the HSU Research VTF-3 MK5 HP if the price matters more than sound quality. Buy the Harbottle Audio C24 L2 if sound quality matters more than the price.
Looking for alternatives? See the complete Subwoofers rankings.
A 15 inch ported subwoofer with excellent output for the money, a strong value pick for movies and music.
A 24 inch ported subwoofer with deep, powerful bass and plenty of headroom for demanding film soundtracks in large rooms.
Prices on this page were last checked October 31, 2026 at 7:11 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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Specifications Side By Side
| HSU Research VTF-3 MK5 HP | Harbottle Audio C24 L2 | |
|---|---|---|
| Price | $1,049.00 | $10,078.84 |
| Ranked | #59 of 143 in Large Home Subwoofers (Over 75 lbs) | #18 of 143 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | ported, front | ported |
| Output SPL at 15 Hz | 100.8 dB | 110.0 dB |
| Output SPL at 20 Hz | 108.2 dB | 117.0 dB |
| Output SPL at 25 Hz | 113.4 dB | 120.7 dB |
| Output SPL at 31.5 Hz | 118.2 dB | 124.0 dB |
| Output SPL at 40 Hz | 121.9 dB | 126.3 dB |
| Output SPL at 50 Hz | 122.3 dB | 127.3 dB |
| Output SPL at 63 Hz | 121.1 dB | 126.7 dB |
| Output SPL at 80 Hz | 120.4 dB | 126.0 dB |
| CEA-2010-A Average (40-80Hz) | 121.4 dB | 126.6 dB |
| Dimensions | 25”H x 17.2”W x 24”D (635.0 x 438.1 x 609.6 mm) | 35.4”H x 28.4”W x 20.2”D (899.9 x 722.1 x 512.1 mm) |
| Weight | 85.1 lbs (38.6 kg) | 149.9 lbs (68.0 kg) |
| Warranty | 7/2(+3) | - |
| Cabinet Color | black | black, white, red, blue |
| Country | United States | Canada |
| Measurement Source | Manufacturer | Manufacturer |
| Drivers | 15” (381mm) driver | 24” (610mm) driver |
| Output SPL at 10 Hz | - | 99.0 dB |
| Output SPL at 12.5 Hz | - | 103.0 dB |
| Output SPL at 100 Hz | - | 125.0 dB |
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