Any diagrams or description on removal/replacement of the front door speakers on the 07 4dr sedan (SE)? I'm hoping I don't have to remove the whole door panel.

Yes you will have to pull the door panel to remove the speakers.

The 03' to 07' models should all be the same in terms of the steps required to remove the door panel, using Search function (near the top of the page) will get you the results you need, you may have to look into the 2003, 2004, 2005, 2006 sections as well as these steps are not going to be posted again and again for every year.

As well, be adviced that you will need special adaptor brackets to mount aftermarket speakers to the door openings as Honda used a non-standard mounting arrangement.

Welcome to DA.