专业音响 - C-MARK 国外音箱特点及独特的新技术(国外英文资料).doc

专业音响 - C-MARK 国外音箱特点及独特的新技术(国外英文资料) Foreign speaker characteristics and unique new technology 1, JBL The speaker is characterized by: high power, high sensitivity, more than 200-300W; the maximum sound pressure level 110dB; good frequency response, flat frequency response and excellent transient characteristics. Unique new technology: 1) speakers with a pole core loudspeaker is quite thick, a pole core is hollow, insert inlaid wire molding. The pole core of this special design can reduce the weight of the speaker, to heat, to improve the power capacity. (2) flat wire coil as an advanced technology, invented by JBL company. Originally in the woofer and tweeter is generally used by later, aluminum and copper are. Flat wire duty magnetic gap coefficient is high, high utilization rate, in order to improve the sensitivity. According to the test in the same circuit, flat wire coil than round wire voice coil can increase the sensitivity of about 1dB. (3) titanium diaphragm dome type unit, and JBL company first started successfully. The youngs modulus of titanium material is superior to aluminum material, the high frequency speaker using titanium film, the upper limit can be greatly broadened, the power capacity has greatly improved. (4) SFG symmetric magnetic circuit titanium diaphragm is the patent technology of the JBL company. The patented technology ensures that the magnetic gap on the distribution of FB value of symmetry and the voice coil position contains equal flux balance, reduce the structure of driving source inductance and heat conduction. To effectively suppress the low frequency distortion and improve the power capacity and damping characteristics. 2, BOSE The company is actively using the speaker box: listen to the sound radiation characteristics of reflective environment to improve and modify the speaker, develop a sound box loudspeaker world famous. The new technology of Bose company: (1) direct / Reflecting Speaker technology. Direct reduction technolog