Description
Sundown Audio M-18 D1
The Sundown M-Series is an all-new “entry-level” subwoofer in our Mega series – all Mega series subwoofers (10,12,15,18) feature our custom tooled and patented frames (US Patent Numbers D691596, D691597, D691598, and D741841) and our Mega-Roll surround.When we say “entry-level” this is only by comparison to its big brothers in our own Mega line – X,Z,NS series and higher. The M series was built for intense bass with stellar low-frequency performance at industry-leading levels of low-distortion. It does this while looking amazing – with a new laser-etched back-plate design and special M-series magnet boot design.
Specifications
| RE (Ohms) | 2.12 | 4.125 |
| FS (Hz) | 26.152 | 25.749 |
| VAS (L) | 112.182 | 117.53 |
| Qes | 0.782 | 0.74 |
| Qms | 5.452 | 5.379 |
| Qts | 0.684 | 0.65 |
| Le (mH) | 1.797 | 3.55 |
| BL (NA) | 17.044 | 24.026 |
| Mms (Grams) | 651.24 | 638.994 |
| Cms (uM/N) | 56.86 | 59.58 |
| Sens (dB @ 1w/1m) | 85.836 | 86.102 |
| Xmax | 35mm | 35mm |
| T/S SPECS | M18D1 | M18D2 |
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Enclosure Specifications
| Sealed Enclosure | Not Recommended |
| Ported Enclosure | 7.0 cu ft |
| Recommended Tuning | 32Hz |
| Recommended Port Area | 112 sq in |
| 4th Order Sealed Side | 3.0 cu ft |
| 4th Order Ported Side | 9.0 cu ft |
| 4th Order Port Area | 180 sq in |
| 4th Order Port Length | 8″ |
| Displacement | 0.25 cu ft |
| Depth | 14.05″ |
| Outside Diameter | 18.46″ |
| Cut-Out | 16.68″ |
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