
High Temperature Voice Coil for Speaker and Subwoofer. High Temperature Resistance: Designed for high temperature voice coil applications with excellent materials. Precision Dimensions: Features precise dimensions including 4 inch diameter and 20mm winding height. Bifilar Winding Type: Utilizes bifilar winding style with composite polyimide fiber glass bobbin. Low THD Performance: Achieves Total Harmonic Distortion of less than 0.005% for Hi-Fi audio. Customization Available: Offers full customization, minor customization, and flexible customization options. High Noise Output: Delivers noise level of 105dB or higher for powerful audio performance. RoHS and CCC Certified: Meets international safety standards with RoHS and CCC certifications. USA Made Bobbin: Uses impregnated fiber glass former material manufactured in the USA.