Maximum speaker depth (with spacers) on K11 doors?

[c0sie]

Hi all,

Long time lurker, first time poster.

I am aware of the maximum depth of speakers that will fit the front K11 doors without spacers (54mm), but does anyone know the maximum depth WITH spacers please?

I want to still retain the standard door card speaker grilles so need a maximum depth with that taken into account.

Thanks,

Cris