Coastal Source 21610SW710 vs MartinLogan DYNAMO 10-BLACK
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Choosing between the Coastal Source 21610SW710 and MartinLogan DYNAMO 10-BLACK? Both compete in the Subwoofer segment. Here’s how they compare across the specs that matter most for your home theater.
Pricing for both models is currently unavailable. Check the retailer links below for current deals.
Looking at overall performance dimensions: The Coastal Source 21610SW710 scores higher in volume/SPL, form factor, room fit. The MartinLogan DYNAMO 10-BLACK leads in audio quality. They score similarly in value.
Subwoofer performance depends heavily on room size, placement, and whether you prioritize output volume or low-frequency extension. The specs below provide the starting point.
The Coastal Source 21610SW710 holds an advantage across more performance dimensions, but the MartinLogan DYNAMO 10-BLACK may still be the better pick depending on which specs matter most to your setup. See the detailed comparison table below for the full breakdown.
For most home theaters, the Coastal Source 21610SW710 is the stronger choice — it leads in 3 of 5 scored dimensions. The MartinLogan DYNAMO 10-BLACK makes more sense if you prioritize the 1 dimension where it leads.
Performance Overview
Scores based on specs and category benchmarks (0–100 scale)
Detailed Specifications
| Specification | ||
|---|---|---|
| Price | N/A | N/A |
| Driver Size | — | 10" |
| RMS Watts | — | 500W |
| -3dB Extension | — | 23Hz |
| -6dB Extension | — | — |
| Phase Control | — | Yes |
| LFE Input | — | Yes |
| Line Input | — | Yes |
| XLR Input | — | Yes |
| App Control | — | Yes |
| Passive | — | No |
| Enclosure | — | sealed |
Key Differences
- Enclosure: Coastal Source 21610SW710 at — vs MartinLogan DYNAMO 10-BLACK at sealed. Sealed subs are tighter and more accurate, better for music. Ported subs play louder and dig deeper for the same driver/amp, better for movies. Some subs offer both via a removable port plug.
- Driver Size: Coastal Source 21610SW710 at — vs MartinLogan DYNAMO 10-BLACK at 10". Larger drivers move more air, producing deeper bass with less effort. A 15-inch driver reaches lower than a 10-inch at the same power, but the cabinet is proportionally larger.
- RMS Watts: Coastal Source 21610SW710 at — vs MartinLogan DYNAMO 10-BLACK at 500W. More sustained power means the sub maintains authority at high volumes without compression. RMS matters more than peak — it's the power available all the time, not just in bursts.
- -3dB Extension: Coastal Source 21610SW710 at — vs MartinLogan DYNAMO 10-BLACK at 23Hz. A lower number means deeper bass — the rumble in explosions, the weight of a pipe organ. Below 20 Hz you feel it more than hear it.
- Phase Control: Coastal Source 21610SW710 at — vs MartinLogan DYNAMO 10-BLACK at Yes
See Where These Rank
Check our editorial rankings to see how Coastal Source 21610SW710 and MartinLogan DYNAMO 10-BLACK compare to the rest of the field.
Best Subwoofer RankingsRelated Calculators
Specifications sourced from manufacturer datasheets and verified against retailer listings. Prices updated hourly from authorized retailers. Scoring uses our open methodology — products are never ranked, promoted, or suppressed based on affiliate commission rates.
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