# Dust cap

> Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Dust_cap
> Markdown URL: https://mediated.wiki/source/Dust_cap.md
> Source: https://en.wikipedia.org/wiki/Dust_cap
> Source revision: 1300062850
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

Protective dome in loudspeakers

This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these messages) The topic of this article may not meet Wikipedia's notability guidelines for products and services. Please help to demonstrate the notability of the topic by citing reliable secondary sources that are independent of the topic and provide significant coverage of it beyond a mere trivial mention. If notability cannot be shown, the article is likely to be merged, redirected, or deleted. Find sources: "Dust cap" – news · newspapers · books · scholar · JSTOR (October 2022) (Learn how and when to remove this message) This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. Please help improve this article by introducing more precise citations. (October 2022) (Learn how and when to remove this message) (Learn how and when to remove this message)

A dust cap which has been damaged (pushed in).

The **dust cap** (also known as **dust dome**, or **dome**) is a gently curved dome mounted either in concave or convex orientation over the central hole of most [loudspeaker](/source/Loudspeaker) [diaphragms](/source/Diaphragm_(acoustics)). It protects the inner mechanics (such as the *pole pieces* and the [voice coil](/source/Voice_coil)) from small particles (which can cause *rubs*) and other contamination. Dust caps can also contribute structural integrity to the voice coil assembly or the [cone](/source/Diaphragm_(acoustics)).

In some loudspeaker designs, dust caps can also be part of the acoustic design of the driver by radiating high frequency energy or suppressing it. Typically the dust cap is made of the same material as the cone. In some [tweeter](/source/Tweeter) designs, the dome is in fact the only sound radiating surface and so it performs both roles. Speakers with dust caps are contrasted with bullet speakers which have a pointed [phase plug](/source/Phase_plug) shaped like the front of a [bullet](/source/Bullet) in the center of the speaker.[1][*[unreliable source?](https://en.wikipedia.org/wiki/Wikipedia:Reliable_sources)*]

## References

1. **[^](#cite_ref-1)** ["Speaker Showdown - Bullet Speakers vs. Dust Caps"](https://ds18.com/blogs/blog/speaker-showdown-bullet-speakers-vs-dust-caps). *DS18*. Retrieved 2025-06-27.

- ALMA [NP-002](https://web.archive.org/web/20090905034625/http://www.almainternational.org/forum/index.php?autocom=downloads) Dust Cap Styles & Nomenclature

- ALMA [DG-002](https://web.archive.org/web/20090905034625/http://www.almainternational.org/forum/index.php?autocom=downloads) Dimensioning & Tolerancing Guidelines for Dust Caps

- ALMA [MG-002](https://web.archive.org/web/20090905034625/http://www.almainternational.org/forum/index.php?autocom=downloads) Measurement Guidelines for Dust Caps

- ALMA [TM-213](https://web.archive.org/web/20090905034625/http://www.almainternational.org/forum/index.php?autocom=downloads) Test Method for Measurement of Dust Cap Mass

- *Sound Engineering* from Loctite

This sound technology article is a stub. You can help Wikipedia by adding missing information.

- [v](https://en.wikipedia.org/wiki/Template:Sound-tech-stub)
- [t](/source/Template_talk%3ASound-tech-stub)
- [e](https://en.wikipedia.org/wiki/Special:EditPage/Template:Sound-tech-stub)

---
Adapted from the Wikipedia article [Dust cap](https://en.wikipedia.org/wiki/Dust_cap) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Dust_cap?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.