Short answer: the MartinLogan Depth 215. Both are rated 4.3/5 for sound quality (#40 and #41 of 143 subwoofers), and the MartinLogan Depth 215 costs $6,999.99 against $10,000 for the JL Audio Fathom f212v2, so with nothing between them on sound quality, price settles it.
Why pick the JL Audio Fathom f212v2: JL Audio’s dual-driver Fathom: two 12” W7 drivers and a 3600W amplifier in a tall sealed cabinet, rated 20 to 97Hz (±1.5dB) and 15Hz at -10dB anechoic, with automatic room optimization. The tradeoff: No independent measurements yet, so its output can’t be compared directly with ranked subwoofers; the rating is estimated from the measured JL Audio Fathom f113 (118.9dB in the 40 to 80Hz CEA-2010 bands): two 12” drivers with twice the cone area and 3600W should add several dB, putting it among the louder sealed subs.
What the MartinLogan Depth 215 does well: The flagship of MartinLogan’s Depth series: two opposed 15” Carbon Aerocore woofers in a force-cancelling sealed cabinet with a 4400W peak amplifier, rated 18 to 120Hz (±3dB), with app control and Anthem Room Correction. The catch: No independent measurements yet, so its output can’t be compared directly with ranked subwoofers; the rating is estimated from MartinLogan’s measured subs, the best of which, the single-15” MartinLogan Dynamo 1600X, reached 120.5dB in the 40 to 80Hz CEA-2010 bands.
Buy the MartinLogan Depth 215. Both are rated the same for sound quality, and it costs $3,000.01 less than the JL Audio Fathom f212v2.
About the ratings: neither speaker has been measured yet, so both ratings are estimated from measured siblings and predecessors (likely ranges: JL Audio Fathom f212v2 3.9 to 4.5; MartinLogan Depth 215 3.9 to 4.5). Treat this verdict as provisional.
Looking for alternatives? See the complete Subwoofers rankings.
Specifications Side By Side
| JL Audio Fathom f212v2 | MartinLogan Depth 215 | |
|---|---|---|
| Price | $10,000.00 | $6,999.99 |
| Ranked | #41 of 143 in Large Home Subwoofers (Over 75 lbs) Estimated | #40 of 143 in Large Home Subwoofers (Over 75 lbs) Estimated |
| Enclosure | sealed | sealed |
| Drivers | 2 x 12” W7 drivers | 2 x 15” Carbon Aerocore woofers (opposed) |
| Amplifier Power | 3600W | 4400W peak |
| Frequency Response | 20-97Hz ±1.5dB anechoic (manufacturer specified) | 18-120Hz ±3dB (manufacturer specified) |
| Dimensions | 32”H x 14.9”W x 20.4”D (812 x 379 x 518 mm) | 22.5”H x 22.8”W x 23.4”D (572 x 580 x 595 mm) |
| Weight | 224.9 lbs (102 kg) | 173.1 lbs (78.5 kg) |
| Country | - | United States |
| Warranty | - | 3 |
| XLR Input | - | Yes |
| AES Input | - | No |
Related Speaker Comparisons
How MartinLogan Depth 215 compares with other leading options:
- MartinLogan Depth 215 vs PSB SubSeries BP12
- MartinLogan Depth 215 vs MartinLogan Depth 212
- JL Audio Fathom f212v2 vs Perlisten Audio D212s
- Funk Audio Classic 18.0 vs JL Audio Fathom f212v2
- JL Audio Fathom f212v2 vs Genelec W371A
Prices on this page were last checked October 11, 2026 at 4:59 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
JL Audio Fathom f212v2: $10,000.00 Estimated Paragon Sight & Sound eBay
Same family: the JL Audio Fathom f110 (smaller subwoofer, rated 3/5), the JL Audio Fathom f112v2 (smaller subwoofer, ranked lower, estimated 3.9/5) and the JL Audio Fathom f113 (smaller subwoofer, ranked lower, rated 4.1/5).
Pros: JL Audio’s dual-driver Fathom: two 12” W7 drivers and a 3600W amplifier in a tall sealed cabinet, rated 20 to 97Hz (±1.5dB) and 15Hz at -10dB anechoic, with automatic room optimization.
Cons: No independent measurements yet, so its output can’t be compared directly with ranked subwoofers; the rating is estimated from the measured JL Audio Fathom f113 (118.9dB in the 40 to 80Hz CEA-2010 bands): two 12” drivers with twice the cone area and 3600W should add several dB, putting it among the louder sealed subs. It weighs 102kg.
Full JL Audio Fathom f212v2 review and specifications →
| Amplifier Power | 3600W |
|---|---|
| Dimensions | 32”H x 14.9”W x 20.4”D (812 x 379 x 518 mm) |
| Drivers | 2 x 12” W7 drivers |
| Enclosure | sealed |
| Frequency Response | 20-97Hz ±1.5dB anechoic (manufacturer specified) |
| Weight | 224.9 lbs (102 kg) |
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
- Head-to-Head Comparisons
MartinLogan Depth 215: $6,999.99 Estimated MartinLogan eBay
Same family: the MartinLogan Depth 212 (smaller subwoofer, ranked lower, estimated 4.1/5).
Pros: The flagship of MartinLogan’s Depth series: two opposed 15” Carbon Aerocore woofers in a force-cancelling sealed cabinet with a 4400W peak amplifier, rated 18 to 120Hz (±3dB), with app control and Anthem Room Correction.
Cons: No independent measurements yet, so its output can’t be compared directly with ranked subwoofers; the rating is estimated from MartinLogan’s measured subs, the best of which, the single-15” MartinLogan Dynamo 1600X, reached 120.5dB in the 40 to 80Hz CEA-2010 bands. Two opposed 15” drivers and 4400W peak should go beyond that. It weighs 78.5kg.
Full MartinLogan Depth 215 review and specifications →
| Released | Nov 2025 (11 months ago) |
|---|---|
| AES Input | No |
| Amplifier Power | 4400W peak |
| Country | United States |
| Dimensions | 22.5”H x 22.8”W x 23.4”D (572 x 580 x 595 mm) |
| Drivers | 2 x 15” Carbon Aerocore woofers (opposed) |
| Enclosure | sealed |
| Frequency Response | 18-120Hz ±3dB (manufacturer specified) |
| Warranty | 3 |
| Weight | 173.1 lbs (78.5 kg) |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
- Head-to-Head Comparisons