Short answer: the MartinLogan Dynamo 1600X for the higher ranking, the Kef KC62 for the lower price. The MartinLogan Dynamo 1600X ranks #2 of 137 subwoofers at $1606.77. The Kef KC62 ranks #137 at $1519.99, $86.78 cheaper.
On the Kef KC62 side: Dual 6.5-inch force-canceling drivers with 1000W in ultra-compact basketball-sized sealed enclosure.
The case for the MartinLogan Dynamo 1600X: Sealed 15-inch with 900W RMS, 1800W peak delivers forceful clean tight low bass. The tradeoff: Ported design room integration needs, mid-range 121.5 dB output, and $1,607 price.
Buy the Kef KC62 if the price matters more than the ranking. Buy the MartinLogan Dynamo 1600X if the ranking matters more than the price.
Specifications Side By Side
| Kef KC62 | MartinLogan Dynamo 1600X | |
|---|---|---|
| Price | $1,519.99 | $1,606.77 |
| Ranked | #137 of 137 in Medium Powered Home Subwoofers (30-75 lbs) | #2 of 137 in Medium Powered Home Subwoofers (30-75 lbs) |
| Enclosure | sealed | sealed |
| Output SPL at 20 Hz | 80.0 dB | 99.4 dB |
| Output SPL at 25 Hz | 84.6 dB | 103.9 dB |
| Output SPL at 31.5 Hz | 88.5 dB | 111.7 dB |
| Output SPL at 40 Hz | 92.2 dB | 118.4 dB |
| Output SPL at 50 Hz | 95.1 dB | 121.0 dB |
| Output SPL at 63 Hz | 97.7 dB | 121.8 dB |
| Output SPL at 80 Hz | 102.6 dB | 121.0 dB |
| Output SPL at 100 Hz | 104.2 dB | 120.2 dB |
| CEA-2010-A Average (40-80Hz) | 96.9 dB | 120.5 dB |
| Dimensions | 9.68"H x 10.07"W x 9.76"D (245.9 x 255.8 x 247.9 mm) | 20.1"H x 17.9"W x 19.1"D (510.5 x 454.7 x 485.1 mm) |
| Weight | 30.9 lbs / 14.0 kg | 56 lbs / 25.4 kg |
| Warranty | 5/2/5 | 3 |
| Cabinet Color | black, white | black |
| Country | United Kingdom | United States |
| Measurement Source | ErinsAudioCorner | Audioholics |
| Power Output (Watts) | 1000W RMS | 900W RMS / 1800W peak |
| Frequency Response | 11-200Hz | 20-200Hz, ±3dB |
| Drivers | 2x 6.5" (165mm) driver | 15" (381mm) driver |
| Output SPL at 15 Hz | - | 86.2 dB |
| Output SPL at 125 Hz | - | 119.0 dB |
| Input Connections | - | RCA (stereo and LFE), XLR (LFE), speaker-level (banana) |
The Two Speakers In Full
Kef KC62: $1,519.99 Amazon
Pros: Dual 6.5-inch force-canceling drivers with 1000W in ultra-compact basketball-sized sealed enclosure. Deep extension to 11Hz with five room placement EQ presets. Elegant design fits any décor.
| CEA-2010-A Average (40-80Hz) | 96.9 dB |
|---|---|
| Cabinet Color | black, white |
| Country | United Kingdom |
| Dimensions | 9.68"H x 10.07"W x 9.76"D (245.9 x 255.8 x 247.9 mm) |
| Drivers | 2x 6.5" (165mm) driver |
| Enclosure | sealed |
| Frequency Response | 11-200Hz |
| Measurement Source | ErinsAudioCorner |
| Output SPL at 20 Hz | 80.0 dB |
| Output SPL at 25 Hz | 84.6 dB |
| Output SPL at 31.5 Hz | 88.5 dB |
| Output SPL at 40 Hz | 92.2 dB |
| Output SPL at 50 Hz | 95.1 dB |
| Output SPL at 63 Hz | 97.7 dB |
| Output SPL at 80 Hz | 102.6 dB |
| Output SPL at 100 Hz | 104.2 dB |
| Power Output (Watts) | 1000W RMS |
| Warranty | 5/2/5 |
| Weight | 30.9 lbs / 14.0 kg |
- Head-to-Head Comparisons
- Links
MartinLogan Dynamo 1600X: $1,606.77
Pros: Sealed 15-inch with 900W RMS, 1800W peak delivers forceful clean tight low bass. Easily configurable as forward-firing or down-firing. Smartphone app with Anthem Room Correction (ARC) optimizes bass across room. Wireless capable with optional SWT-X module.
Cons: Ported design room integration needs, mid-range 121.5 dB output, and $1,607 price.
| CEA-2010-A Average (40-80Hz) | 120.5 dB |
|---|---|
| Cabinet Color | black |
| Country | United States |
| Dimensions | 20.1"H x 17.9"W x 19.1"D (510.5 x 454.7 x 485.1 mm) |
| Drivers | 15" (381mm) driver |
| Enclosure | sealed |
| Frequency Response | 20-200Hz, ±3dB |
| Input Connections | RCA (stereo and LFE), XLR (LFE), speaker-level (banana) |
| Measurement Source | Audioholics |
| Output SPL at 15 Hz | 86.2 dB |
| Output SPL at 20 Hz | 99.4 dB |
| Output SPL at 25 Hz | 103.9 dB |
| Output SPL at 31.5 Hz | 111.7 dB |
| Output SPL at 40 Hz | 118.4 dB |
| Output SPL at 50 Hz | 121.0 dB |
| Output SPL at 63 Hz | 121.8 dB |
| Output SPL at 80 Hz | 121.0 dB |
| Output SPL at 100 Hz | 120.2 dB |
| Output SPL at 125 Hz | 119.0 dB |
| Power Output (Watts) | 900W RMS / 1800W peak |
| Warranty | 3 |
| Weight | 56 lbs / 25.4 kg |
- Head-to-Head Comparisons
- MartinLogan Dynamo 1600X vs HSU Research ULS-15 MK2
- MartinLogan Dynamo 1600X vs JTR Speakers Captivator 212PRO
- MartinLogan Dynamo 1600X vs Power Sound Audio (PSA) XV15
- MartinLogan Dynamo 1600X vs Monoprice SW-15
- MartinLogan Dynamo 1600X vs SVS SB-3000
- MartinLogan Dynamo 1600X vs SVS PB-1000 PRO
- MartinLogan Dynamo 1600X vs Monoprice SW-12
- MartinLogan Dynamo 1600X vs Rythmik F12
- See all 15 comparisons
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Product prices and availability were last checked August 9, 2026 at 6:57 AM UTC 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.