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MartinLogan Dynamo IW-O In Wall Subwoofer with Open Back Design (Each) - DYNIWOPENBACK
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MartinLogan DYNIWOPENBACK Dynamo IW-O In Wall Subwoofer with Open Back Design (Each)
What’s the difference between Dynamo IW-O and IW-S? The Dynamo IW-O uses the same retrofittable size, and dual 8” woofer configuration as the IW-S, but with an open back design instead of a sealed, fire rated enclosure. The open back of Dynamo IW-O means more sound will transfer into the wall (which could cause some noise complaints from other rooms), but with the tradeoff of deeper bass extension and higher output potential than IW-S. IW-O also has an available “High Output Back Box” accessory for when a mixture of sound control and higher output is desired.
Key Features
- Ultra Rigid Stamped Steel chassis and baffles and die-cast aluminum clamps add strength and rigidity for better bass performance, and more durable installation.
- Magnetically attached grille: Easily reveal or hide the performance whenever you like.
- Premium-grade components include high-power rated resistors, capacitors and heavy gauge wire inductors.
- Optional (sold seperately) High Output Back Box available for when sound control is desired. **The IW-O with optional back box will requires new contruction or drywall repair to be performed. If both sound control and retrofit sizing is required, take a look at the Dynamo IW-S.**
- Nickel-plated, spring-loaded binding posts feature a larger wire hole to accept higher-gauge wire or banana plugs.
Features
- The Choice Is Yours
Dynamo IW-O gives you flexible installation options. Choose to use it in its default open wall cavity configuration and you have an affordable, easily retrofittable, high output subwoofer solution. For new construction projects, or when drywall repair isn’t an issue, the optional HOBB (High Output Back Box. Sold Seperately) acoustic backbox provides a large enclosure volume to let the Dynamo IW-O stretch its legs, while providing acoustic control to reduce sound transmission through the wall. - Bass Without The Bulk
Purpose-built for high output and low distortion from a compact, retrofittable enclosure. The dual, 8” High-Excursion Carbon-Fiber-Reinforced Polypropylene woofers provide more surface area than a 10” sub for powerful, accurate bass without the bulk. - Distributed Audio Made Easy
Our MDA series amplifiers have made adding bass to whole home music systems easier than ever. For these distributed audio systems, the Dynamo IW-S can easily be driven off the bridged “subwoofer output” allowing you to take advantage of the MDA’s robust bass management, custom DSP profiles, and advanced ARC Genesis room correction for optimized performance in any environment. - Practical Performance
With powerful bass and zero footprint, you get the best of both worlds, allowing you to add bass to any room without taking up valuable floor space. - The Hidden Alternative
Sometimes a traditional subwoofer just isn’t in the cards for every system. The Dynamo IW-O expands the offerings in our highly acclaimed Dynamo Subwoofer series. With a minimalist look, the Dynamo IW-O is a great way to have much of the performance of a standalone sub without the bulk. Bass you’ll notice, with a look you won’t. - A Perfect Match
In addition to the MartinLogan MDA series, the Dynamo IW subwoofers are compatible with the MartinLogan MP500 amplifier. The custom DSP presets optimize performance and our engineers even designed options to support running dual subwoofers off a single amplifier, making it easier than ever to get powerful bass in a stealth installation.
California customers:
General
Color
White
Bluetooth
No
Wi-Fi
No
USB Port
No
NFC
No
Water Resistant
No
Rock Speaker
No
Number of Speakers In Set
1
Waterproof
No
AirPlay
No
Built-In Mic
No
Digital Display
No
Aux Input
No
Recommended Amplifier Power
50W - 800W
Optical Digital Input
No
Rechargeable
No
SonosNet
No
Coaxial Digital Input
No
HDMI Input
No
HDMI Audio Return Channel (ARC)
No
4K Video Passthrough
No
8K Video Passthrough
No
Wireless Subwoofer
No
HDR Support
No
Side-Firing Speaker
No
Up-Firing Speaker
No
Dolby Atmos
No
DTS: X
No
Frequency Response
30Hz - 190Hz +/-3dB
Powered / Passive
Passive
Shape (In-Wall/Ceiling)
Rectangular
Speaker Design
Subwoofer
Speaker Type
In-Wall
Portable
No
Approximate Dimensions
Height (in)
19.11
Width (in)
10.73
Depth (in)
4.1
Cut-Out Height (in)
18
Cut-Out Width (in)
9.63
Depth From Wall (in)
3.5
Warranty Information
Parts Warranty
5 Years Limited
Labor Warranty
5 Years Limited
Approximate Weight
Unit Weight (lbs.)
15
Package Weight (lbs)
15
Frequently Asked Questions
-
This subwoofer is compatible with amplifiers providing between 50W to 800W of power. It works particularly well with MartinLogan MDA series amplifiers and the MartinLogan MP500 amplifier, which include custom DSP presets to optimize performance and support configurations such as running dual subwoofers from a single amplifier.
-
The open back design allows more sound to transfer into the wall, resulting in deeper bass extension and higher output potential compared to sealed enclosures. However, this may cause sound transmission to adjacent rooms, which might be a consideration in terms of noise.
-
Yes, there is an optional High Output Back Box available separately, which provides a larger enclosure volume. This accessory helps control acoustic output, reducing sound transmission through walls, and supports enhanced bass performance for new construction or installations where wall modification is possible.
-
This in-wall subwoofer features a mounting depth of 3.5 inches and requires a cut-out opening of 18 inches in height and 9.63 inches in width. It has a rectangular shape and a depth of 4.1 inches, making it compatible with retrofit installations that need a compact and minimalist appearance.
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It comes with a limited labor warranty and a limited parts warranty, each lasting 5 years, ensuring long-term coverage and support for manufacturing defects or issues under normal use conditions.
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