Where can I find replacement speakers for the Soundlink Mini?

I plan on following the relevant guide for replacing my generation 1 Bose Soundlink Mini. The guide is very in depth, including necessary tools; however, it doesn't list any relevant information about the speakers. The guide gets to the end where you remove the speakers then, bang, thats it, no more help.

Any suggestions for replacement speakers? Would standard tweeters fit within the unit?