ES-Braxil Kits
ES-63i/Brax

Braxial Style Advantages
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Utilization of a single mounting position for full range response.
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Sealed dust-cap on the mid/woofer for full extension and protection from dirt.
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Acoustically non-resonant mount for smoothest response.
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Time aligned axis defines an optimum listening space for maximum clarity.
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Uniform polar response is available over a well defined but broad area.

CDT GOLD Braxial refers to a bracket mounted assembly of mid/woofer tweeter This apparently simple assembly has huge advantages over the more common coaxial speaker. These were summarized above. Let us examine these advantages and contrast the corresponding drawbacks of conventional technology.

First consider the typical speaker configuration. The coaxial mounting type and the simple full range speaker also provide simple mounting convenience. However the full range cannot really do the job as asking one speaker to “do full range” is just too much to ask without major sacrifices. Dispersion, power handling and distortion are just the first three compromised parameters.


The coaxial two-way speaker mounts the tweeter on an axis ahead of the apex of the main cone. This tweeter blocks the sound from the main cone as well as producing sound that is always “ahead” of the main cone. The supporting post utilized in this design must pass through the dust-cap and thus allows dirt to pass into the voice coil gap or requires an extra, restrictive noisy spider to exclude some potential dirt ingress.

The area created between the back of the blocking tweeter and the apex of the cone forms a resonant cavity that can color the sound from both woofer and tweeter. The volume of this cavity can vary during long mid/woofer excursions. Response ripple at the crossover frequency can result. The sound from the forward mounted tweeter is always “ahead” of the main cone and is never time aligned with this cone. Most coaxial speakers use a cheap single crossover part embedded somewhere in the assembly. 

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