> For the complete documentation index, see [llms.txt](https://itsgreq.gitbook.io/headphone-measurements/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://itsgreq.gitbook.io/headphone-measurements/fostex/fostex-t40rp-mkii-modified.md).

# T40RP mkII - Modified

Sounds like you're having a sub-woofer party in a closet.

See the mod here - <https://www.head-fi.org/threads/fostex-t50rp-incremental-mods-and-measurements.618659/post-16356751>

Updated mod - <https://www.head-fi.org/threads/fostex-t50rp-incremental-mods-and-measurements.618659/post-16376166>

<figure><img src="https://31762434-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M4NrSugToAwYkW0a8hV%2Fuploads%2F5VhMhN1d4KYVM4pPVAt0%2FFostex%20T40RP%20mkII%20mod%201g%20Angel%20Hair.jpg?alt=media&amp;token=7a15036d-fc56-42a1-91aa-133098d49d93" alt=""><figcaption></figcaption></figure>

![](https://31762434-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M4NrSugToAwYkW0a8hV%2Fuploads%2FbqPrS6M3blcNiJaBOIsi%2F_DSC5473-Recovered.png?alt=media\&token=afbde22b-ffe0-43b6-b939-ad0431116757)