How do I know if I have a broken speaker?

[sdxtest]

I (sdxtest) will. (a68c4533-1ffa-4be0-961f-18cd092e6d6d)

[sdxadmin]

I also have a Gibson, you should keep that forever (7dbdfa16-597d-49f5-b5db-126118117d93)

[sdxtest]

I (sdxtest) will. (4e8db4c5-9e78-4a67-a0b0-1355fff4da44)

[sdxadmin]

I also have a Gibson, you should keep that forever (bb73f9b9-7ec1-4847-bfd2-f00f49354356)

[sdxtest]

I (sdxtest) will. (0bf0be1e-84fe-430c-9115-6534c765c315)