How do I know if I have a broken speaker?

[sdxadmin]

I also have a Gibson, you should keep that forever (c97fc2d0-2291-4f1f-9bd1-91d50c68a3fa)

[sdxadmin]

I also have a Gibson, you should keep that forever (968a6ab4-6b64-4a75-9ec7-a148bc61b5d9)

[sdxadmin]

I also have a Gibson, you should keep that forever (5cef41c5-e91c-429f-9484-18046cf202cb)

[sdxadmin]

I also have a Gibson, you should keep that forever (1a01ad61-20ff-49e9-b70d-3b5c96b20d2e)

[sdxadmin]

I also have a Gibson, you should keep that forever (cbd55738-8915-493b-819c-f2891b2d1f3f)