TruAudio Reveals Trunami Retrofittable In-Wall Subwoofer

TruAudio has introduced an all new, retrofittable in-wall sub called the Trunami.
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TruAudio has introduced an all new, retrofittable in-wall sub called the Trunami.

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“Designing the Trunami in-wall subwoofer was a labor of love. And that love began by choosing a TruAudio 8-inch woofer,” said Kary Wawrzyniak, vice president of technology.

The Trunami’s 8-inch woofer utilizes a linear High-Excursion-Spider-Suspension (HESS) design—specifically matched to its enclosure as well as the amp power level and frequency. Its Aramid fiber spider is the optimized shape for deep bass, linearity and break-up mode control at high drive levels. The woofer also has a large, high-energy ceramic magnet that achieves a higher BL product or “horsepower” for the Trunami.

The woofer magnet circuit was designed using Finite Element Analysis (FEA) to optimize the woofer’s motor efficiency, making for a unique subwoofer driver with high sensitivity, long excursion, producing deep bass in a small enclosure with low distortion, the company says.

TruAudio added two 6.5-inch Bass Augmenting Drivers (BAD) to enhance the bass while keeping the dimensions of the Trunami cabinet to a minimum. The BAD’s allowed us to design a very small enclosure while adding a radiating area equal to that of a 10-inch woofer.

The BAD’s also augment the lowest range of the Trunami’s 8-inch woofer. Tuned to vibrate in response to the bass energy coming from the woofer, the BAD’s deepen the range several steps lower than the lowest pitches that the woofer can reproduce. They extend the Trunami bass a full -3db@37Hz when mounted mid wall near the floor. This gives the Trunami the aural perception of bass notes roughly half an octave lower than it would otherwise be able to reproduce.

All the Trunami drivers use a high tech, high temperature adhesive to bond the cone, spider and voice coil at a single region called “three point bonding.” This assures high power handling with mechanical durability. The Trunami cabinet has also been internally braced for vibration free performance.

The Trunami has been designed to work as a single unit or in 2 or 4-unit configurations to minimize waves and phase cancellations in larger rooms.

Finally, TruAudio used a state-of-the-art CAD system in designing the Trunami, which is small enough to mount between a 16-inch stud in a standard thickness wall. Coming complete with its own MDF back box, the Trunami is retrofittable. The Trunami also features a frameless, magnetic cloth grill that is both easy to install and minimizes the on-wall footprint.

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