A dust cap has no effect upon sound quality. As the name implies it keeps dust out of the gap between voice coil and magnet. A speaker cone can incorporate an integral dust cap. That piston-like thing is just a magic prop for "wow" factor.
No dust caps?
Hi all, I’m still rather novice on the topic of sound reproduction, but I’m trying to study up and better understand how various gear works, so please bear with my likely ignorant question. I’ve only just realized that the vast majority of dynamic drivers have dust caps in the center of the cone, but some, it appears, do not. For example the new PS Audio FR 30 speakers appear to have a solid aluminum driver cone that looks very much like an engine piston. Is this a fundamentally different dynamic driver type? If so, what are the trade offs between the classic cone with a dust cap, versus a solid faced driver?
3 responses Add your response