CARBON GRAPHITE TWEETER
The tweeter’s diaphragm is built from a sheet of carbon graphite which enables it to reproduce frequency ranges in the upper 55kHz range, usually achieved using a harsher, hard dome tweeter like Aluminum or Titanium. Carbon graphite allows us to hit those High-rez audio-compatible frequencies while maintaining the softer, more damped sound qualities of a soft dome.
SIMPLIFIED INLINE CROSSOVER
With the introduction of the nanofiber cone, the X-Series’ midrange is capable of reproducing some incredible detail in the upper frequency range, known as transients. These harmonic notes are details lost when a low past filter is introduced. Along with limiting these frequencies, a low pass filter can introduce phase shifts in the upper frequency ranges which create time smearing and other phase issues. To ensure proper detail reproduction and imaging, we allow the midrange to play in full range and include a simple high pass filter for the tweeter. As a system, these speakers are able to play highly detailed music passages where you can feel the musicians presence in front of you.
The all-new designs are built for maximum linear motor force for realistic reproduction of any type of sound source. Premium materials were meticulously selected to contribute the performance of the X-Series speakers:
- New radial neodymium motor structure: A pole-type neodymium magnet positioned inside the voice coil (as opposed to outside) creates an improved magnetic circuit with less loss for more efficient power delivery. Since the magnet is smaller than conventional designs, it allows the depth of the X-Series speakers to be much shallower and thereby compatible with more vehicles.
- New nanofiber cone: The small-diameter nanofibers create a cone structure that is lightweight and rigid, for increased sound accuracy. Nanofiber cones also have good internal damping, so residual energy decays quickly without distorting the original music tones.
- New carbon graphite tweeter: Alpine chose carbon graphite for the tweeter because it is rigid enough to perform like a hard dome tweeter but maintains the natural sound characteristics of a soft dome tweeter. The tweeter delivers increased accuracy and extended high frequency range without the harshness that is sometimes associated with hard dome tweeters.
Other premium materials used in the X-Series speakers include a cast aluminum frame for strength, and Alpine’s HAMR (High Amplitude Multi-Roll) surround technology for linear range of operation.