The MartinLogan Dynamo IW-S is a premium passive in-wall subwoofer designed to deliver powerful, accurate bass while remaining completely hidden within the wall. Featuring dual 8-inch carbon-fiber-reinforced polypropylene woofers housed in an integrated sealed, fire-rated enclosure, the Dynamo IW-S offers the performance of a traditional subwoofer without occupying valuable floor space. Its compact, retrofit-friendly design makes it ideal for both new construction and existing installations where discreet aesthetics are a priority.
Purpose-built for custom home theaters and distributed audio systems, the Dynamo IW-S combines high output with low distortion thanks to its rigid steel enclosure, high-excursion drivers, and premium internal components. The sealed back box not only ensures consistent bass performance regardless of wall construction but also minimizes sound transmission into adjacent rooms, making it an excellent choice for residential and commercial environments where sound isolation is important.
The Dynamo IW-S integrates seamlessly with MartinLogan's MDA Series amplifiers and the MP500 amplifier, allowing installers to take advantage of advanced DSP tuning, bass management, and ARC Genesis room correction for optimized low-frequency performance. Its GRIP™ mounting system and magnetic paintable grille simplify installation while maintaining a clean, nearly invisible appearance once installed.
Whether complementing an immersive home theater or adding impactful bass to a whole-home audio system, the Dynamo IW-S delivers deep, controlled low frequencies with exceptional flexibility. Its hidden installation, premium engineering, and consistent acoustic performance make it an ideal solution for listeners seeking high-performance bass without compromising room aesthetics.
- Component type: Passive in-wall subwoofer
- Design: Dual 8-inch high-excursion in-wall subwoofer with integrated sealed fire-rated enclosure
- Low-frequency drivers: Two 8-inch (210 mm) CFP™ carbon-fiber-reinforced polypropylene woofers
- Voice coils: Dual 1.5-inch (38 mm), 8-layer copper voice coils
- Frequency response: 77 Hz – 190 Hz (±3 dB)
- Low-frequency extension: 35 Hz (DIN)
- Maximum input power: 300 W
- Recommended amplifier power: 50–600 W
- Internal enclosure volume: 7.5 L sealed back box
- Minimum mounting depth: 3.9 in (9.8 cm)
- Cutout dimensions: 18 × 9.63 in (45.7 × 24.5 cm)
- Overall dimensions: 19.1 × 10.7 × 4.5 in (48.5 × 27.2 × 11.5 cm)
- Weight: 26.7 lb (12.1 kg)
- Grille: Magnetic, paintable low-profile grille
- Design features: Integrated fire-rated back box, GRIP™ mounting system, carbon-fiber-reinforced polypropylene woofers, retrofittable design, compatible with MartinLogan MDA Series and MP500 amplifiers