Voice coil designed for professional tweeter speakers - Vibrating membrane constructed from spiral coated aluminum for durable high frequency performance - Lightweight and portable, making it a convenient tweeter accessory or replacement part - Dimensions: diagonal length 3.85 inches; outer diameter 2.83 inches; coil length 4.25 inches; inner diameter 1.77 inches Compatibility and performance - Designed for professional tweeter applications - Suitable as a replacement component in compatible tweeter assemblies or for use in custom speaker projects requiring these exact dimensions Use scenarios - Replacing a worn or damaged voice coil in professional PA systems, stage monitors, or studio monitor tweeters - Upgrading or repairing tweeter assemblies in custom speaker builds - Keeping a ready spare on hand for field service and on-site maintenance of high-frequency speaker systems