Car speaker overview ⁄ from speaker development and design, to manufacturing

A) Cone paper
Strong medium/high-range reproduction by using glass fibers to improve light resistance and rigidity.

B) Damper
Aramid fiber is used as the base material, and its characteristics provide outstanding durability and straightness, thereby yielding linear vibration amplitude.

C) Special adhesive fastening to dampen resonance
Clear sound quality is provided over the entire range by suppressing cabinet resonance that occurs due to speaker vibration amplitude.

D) Dust cap
Can provide metal instrument sound quality with good response and resolution by using a titanium material with high sound velocity for high-fidelity high-range reproduction.

E) Neodymium magnetic circuit
Uses powerful neodymium ring magnet (1.7 tesla). Magnetic circuit parts are fabricated by machining, and this contributes to superior sound quality.

F) Voice coil
Employs edge-wise voice coil wire, different from ordinary round wire. This allows gaps between wires to be minimized, and dramatically improves the utilization rate of magnetic force.
This also makes it possible to secure the ideal winding width of voice coil wire, so changes in sound quality are small, even with large vibration amplitude.

Other
① Lead-free solder with silver is used for all solder joints
② All products are produced by hand in Japan, and quality is controlled through 100% measurement.

A) Cone paper
Powerful low-range reproduction by using glass fibers to improve light resistance and rigidity.

B) Damper
Aramid fiber is used as the base material, and its characteristics provide outstanding durability and straightness, thereby yielding linear vibration amplitude.

C) Special adhesive fastening to dampen resonance
Clear sound quality is provided over the entire range by suppressing cabinet resonance that occurs due to speaker vibration amplitude.

D) Voice coil
Employs rectangular wire, different from ordinary round wire. This allows gaps between wires to be minimized, and dramatically improves the utilization rate of magnetic force.
This also makes it possible to secure the ideal winding width of voice coil wire, so changes in sound quality are small, even with large vibration amplitude.

E) Large ferrite magnetic circuit
Employs a large ferrite magnet with outer diameter Φ120.

F) Edge
By using rubber, divided vibration of the cone paper slanted face is reduced, and clear, rich low-range reproduction is achieved.

G) Cancel magnet
By placing a magnet at the top of the pole, magnetic flux is efficiently concentrated in the center part, resulting in a 10% improvement in magnetic flux over conventional products, and yielding powerful sound quality.

H) Cap
Reproduction up to the mid-range band is covered by using a beryllium alloy.

Other
① Lead-free solder with silver is used for all solder joints
② All products are produced by hand in Japan, and quality is controlled through 100% measurement.

A) Cone paper
A two-layer structure is used, made of glass fiber and pulp, and powerful low-range reproduction is achieved by balancing glass fiber strength and pulp internal loss.

B) Edge
Thanks to a rubber edge that has a form and thickness capable of withstanding high power, high-fidelity playback is achieved without breakage under high power.

C) Damper
Aramid fiber is used as the base material, and its characteristics provide outstanding durability and straightness, thereby yielding linear vibration amplitude.

D) Special adhesive fastening to dampen resonance
Clear sound quality is provided over the entire range by suppressing cabinet resonance that occurs due to speaker vibration amplitude.

E) Dust cap
A special treatment agent is applied to the papermade cap to suppress divided vibration and provide clear sound quality.
Also, a resonance dampening sheet is affixed to reduce gap resonance that occurs with a large vibration amplitude, thereby yielding clear sound quality with no distortion.

F) Large ferrite magnetic circuit
Magnetic flux is improved by employing a large strontium magnet with an outer diameter of Φ156.

G) Voice coil
Employs heat-resistant bobbin and heat-resistant wire, so it can withstand even large input, and faithful low-range reproduction is achieved.

Other
① Lead-free solder with silver is used for all solder joints
② All products are produced by hand in Japan, and quality is controlled through 100% measurement.