Ford Focus Mk2: Door speaker replacement

Two of the door speakers in my 2005 mark II Ford Focus have stopped working. So in this video I'm going to replace them with some aftermarket ones from a kit which is supposedly a straight swap...

Link to my other video for door card removal and replacement:
   • Ford Focus Mk2: How to remove and rep...  

Link to the speaker kit I bought (not affiliated):
https://www.ebay.co.uk/itm/264990080475

Music used in the tests:
https://open.spotify.com/track/1fYKpU...
https://open.spotify.com/track/5DBPq4...

Chapters:
00:00 - The problem with the speakers
01:03 - The speaker kit I bought
02:12 - Front speaker access
02:25 - Testing the wiring
03:41 - Removing the old speaker assembly (front)
04:28 - Unboxing the new speakers
04:49 - Testing the new speaker (front)
05:13 - Checking the mounting kit (front)
05:32 - Why speaker isolation is important (phase cancellation)
06:47 - Relocating the speaker wires (front)
07:10 - Fitting the new speaker mount (front)
07:56 - Fitting the speaker & sealing holes (front)
08:40 - Testing (front)
08:56 - Rear speaker access
09:05 - Testing the new speaker (rear)
09:27 - Removing the old speaker assembly (rear)
09:35 - Relocating the speaker wires (rear)
10:24 - Fitting the new speaker mount (rear)
12:40 - Fitting the speaker (rear)
13:15 - Testing and adjusting (rear)
13:31 - Final test of all speakers
14:02 - Conclusion