The speaker system which adopted the low-distortion magnetic circuit and the newly developed cone paper.
A 20cm cone type Woofer is carried in low-pass, and a 2.5cm dome shape tweeter is carried in a high region.
Scandinavian pulp is used for the diaphragm, and Sony's original paper manufacturing technology is used to increase rigidity and expand the piston motion range.
In addition, it was clarified that due to abnormal vibrations in the voice coil bobbin and the joint between the bobbin and the cone, an extremely large level of abnormal sound is radiated in the band of 2 to 3 times the treble limit frequency. An effective dust-proof cap is used to suppress abnormal sound radiation. Furthermore, a notch is provided in the center of the center pole, and thick copper plating or a copper cap is added to the part to eliminate non-linear distortion caused by the magnetic material.
In order to correspond to whether it is a large output, the adhesive by newly developed special rigid resin is adopted, and also a metal bobbin (winding frame) is used with a Woofer, and the permissible input is raised.
Moreover, the edge is airtightly treated by pulling a very thin special rubber on the cross, and the valley that tends to occur around 400Hz is eliminated. In addition, high-purity imported copper foil treated with a special resin is used for the lead wire to prevent disconnection, extending the life of the lead wire.
In order to draw out the performance of a unit, the network part has adopted the large-sized air core coil with little DC resistance.
The hard particle board of 20mm thickness is adopted as an enclosure.
Resonance such as box rumbling is reduced by carefully examining the material, thickness, and reinforcement method.
The tweeter is equipped with a continuously variable type level control.
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1.Notes (Please read before purchasing.) *If the buyer's address is a remote location, an additional $25 is required. The voltage of the electronic device on display is 100 VAC, a Japanese product. If you use the voltage in your country, we recommend using a transformer.