Once the tweeters are removed, disconnect the two subwoofer / speakers from the motherboard.

There may be some adhesive such as hot glue securing these connections. If so, remove it before disconnecting to avoid damaging the wires.

The left speaker is marked in red.

The right speaker is marked in black.

Make sure during reassembly to get these correct as they will not connect properly if mixed up.

If for some reason your speakers are not color coded the same, use the photos in the guide to ensure the plugs are in the correct order and remember that the left speaker has a shorter cable and the right speaker has a longer cable.