Focer Font of knowledge speaker power RMS and stuff

[fazersharp]

Here are the photos from the boroscope after inserting through the port (learnt that it is not a hole ). The first one is the tweeter speaker that I can see by eye down the port and the second one is the lower bigger speaker but I do not know what the numbers mean. The 5W 8 ohms on the small top speaker is that just for that one and then to get the whole speaker power I need to add them both up.
The new system speakers are 2x10W =20w output from the amp ( is that the correct way to describe it )
Until the warranty has ran out on the new system I want to get away with using the old speakers if I can.
But what will happen if for example the old speakers are 5W but the new system is 10W. Also what about the other way around if the new system output was 5W but the old speakers were 10w