What size speakers are in the doors?

[GabrielKnight]

of the Williams 3 please?

[busterhymes]

5" dia in front doors :)

[GabrielKnight]

.
... and 4 inchers up front. Found out in the end. Trying to find replacements from the awful paper cones that come as standard.

I bought some Boschmann GIGA ALX-442 speakers for up front but the problem with these and most of the others I've looked at is thy protude slightly so the cover to the fan heater doesn't sit flush.

What have others installed with success?