Short answer: the JTR Speakers Growler (2015). It ranks #13 of 110 subwoofers by sound quality at $2995; the Harbinger V2218S ranks #15 and costs $3495, so there is little reason to consider the other one.

What the Harbinger V2218S offers: Independent CEA-2010 testing records 81.7 dB at 20 Hz and 128.9 dB through 40-80 Hz. The ported, front enclosure with 18” (457mm) driver delivers formidable upper-bass output for movie effects and music. Watch for: 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 825.5H x 673.1W x 754.4D mm cabinet and 40.8 kg mass still require deliberate placement and calibration.
What the JTR Speakers Growler (2015) offers: 12-inch ported driver reaches 130.2dB CEA-2010-A average, nearly matching the class leader for about $1,000 less. Watch for: Ported design room interaction, 45 kg size, and $2,995 cost.
Buy the JTR Speakers Growler (2015). It ranks higher for sound quality than the Harbinger V2218S and costs less, which settles it without a real tradeoff to make.
Still deciding? The full Subwoofers rankings cover every ranked option.
Specifications Side By Side
| Harbinger V2218S | JTR Speakers Growler (2015) | |
|---|---|---|
| Price | $3495 | $2995 Passive |
| Ranked | #15 of 110 in Large Home Subwoofers (Over 75 lbs) | #13 of 110 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | ported, front | ported, front |
| Output SPL at 20 Hz | 81.7 dB | 92.8 dB |
| Output SPL at 25 Hz | 99.7 dB | 97.2 dB |
| Output SPL at 31.5 Hz | 118.0 dB | 106.6 dB |
| Output SPL at 40 Hz | 122.8 dB | 122.7 dB |
| Output SPL at 50 Hz | 129.0 dB | 130.0 dB |
| Output SPL at 63 Hz | 132.2 dB | 133.6 dB |
| Output SPL at 80 Hz | 131.7 dB | 134.4 dB |
| CEA-2010-A Average (40-80Hz) | 128.9 dB | 130.2 dB |
| Dimensions | 32.5"H x 26.5"W x 29.7"D (825.5 x 673.1 x 754.4 mm) | 22.5"H x 30"W x 20"D (571.5 x 762.0 x 508.0 mm) |
| Weight | 89.9 lbs (40.8 kg) | 100.1 lbs (45.4 kg) |
| Cabinet Color | black | - |
| Country | United States | United States |
| Measurement Source | Brent Butterworth | Data-bass |
| Drivers | 18" (457mm) driver | 12" (305mm) driver |
| Passive | - | Yes |
| Output SPL at 100 Hz | - | 135.5 dB |
| Output SPL at 125 Hz | - | 136.0 dB |
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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.
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The Two Speakers In Full
Harbinger V2218S: $3495 eBay
Pros: Independent CEA-2010 testing records 81.7 dB at 20 Hz and 128.9 dB through 40-80 Hz. The ported, front 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 825.5H x 673.1W x 754.4D mm cabinet and 40.8 kg mass still require deliberate placement and calibration.
Notes: Looks like “PA sub”
Full Harbinger V2218S review and specifications →
| CEA-2010-A Average (40-80Hz) | 128.9 dB |
|---|---|
| Cabinet Color | black |
| Country | United States |
| Dimensions | 32.5"H x 26.5"W x 29.7"D (825.5 x 673.1 x 754.4 mm) |
| Drivers | 18" (457mm) driver |
| Enclosure | ported, front |
| Measurement Source | Brent Butterworth |
| Output SPL at 20 Hz | 81.7 dB |
| Output SPL at 25 Hz | 99.7 dB |
| Output SPL at 31.5 Hz | 118.0 dB |
| Output SPL at 40 Hz | 122.8 dB |
| Output SPL at 50 Hz | 129.0 dB |
| Output SPL at 63 Hz | 132.2 dB |
| Output SPL at 80 Hz | 131.7 dB |
| Weight | 89.9 lbs (40.8 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Independently measured by Brent Butterworth; the published figures above come from this ASR subwoofer measurement thread.
- Head-to-Head Comparisons
- Harbinger V2218S vs Funk Audio Classic 18.0
- Harbinger V2218S vs Monoprice Monolith 16 THX Ultra
- Harbinger V2218S vs Funk Audio Ultra 24.0
- Harbinger V2218S vs Rythmik FV25HP
- Harbinger V2218S vs Monoprice Monolith M-215
- Harbinger V2218S vs JTR Speakers Captivator 1400
- Harbinger V2218S vs JTR Speakers Captivator 2400ULF
- Harbinger V2218S vs Rythmik FV15HP
- See all 14 comparisons
JTR Speakers Growler (2015): $2995 Passive eBay
Pros: 12-inch ported driver reaches 130.2dB CEA-2010-A average, nearly matching the class leader for about $1,000 less.
Cons: Ported design room interaction, 45 kg size, and $2,995 cost.
Notes: Looks like “PA sub”
Full JTR Speakers Growler (2015) review and specifications →
| CEA-2010-A Average (40-80Hz) | 130.2 dB |
|---|---|
| Country | United States |
| Dimensions | 22.5"H x 30"W x 20"D (571.5 x 762.0 x 508.0 mm) |
| Drivers | 12" (305mm) driver |
| Enclosure | ported, front |
| Measurement Source | Data-bass |
| Output SPL at 20 Hz | 92.8 dB |
| Output SPL at 25 Hz | 97.2 dB |
| Output SPL at 31.5 Hz | 106.6 dB |
| Output SPL at 40 Hz | 122.7 dB |
| Output SPL at 50 Hz | 130.0 dB |
| Output SPL at 63 Hz | 133.6 dB |
| Output SPL at 80 Hz | 134.4 dB |
| Output SPL at 100 Hz | 135.5 dB |
| Output SPL at 125 Hz | 136.0 dB |
| Passive | Yes |
| Weight | 100.1 lbs (45.4 kg) |
- 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
- JTR Speakers Growler (2015) vs Danley Sound Labs DTS10
- JTR Speakers Growler (2015) vs Funk Audio Ultra 24.0
- JTR Speakers Growler (2015) vs Funk Audio Classic 18.0
- JTR Speakers Growler (2015) vs JTR Speakers Captivator S2
- JTR Speakers Growler (2015) vs Monoprice Monolith 16 THX Ultra
- JTR Speakers Growler (2015) vs Reaction Audio PV-15X
- JTR Speakers Growler (2015) vs Pro Audio Technology LFC-24sm
- JTR Speakers Growler (2015) vs Rythmik FV25HP
- See all 22 comparisons

