Batboard

I know this has been asked before, but I figure I'd try to sum it all up in one email. I have several speakers that look like they can be used with the Spectra, but how do they rate?

HSN4018B: 8ohm, Spectra speaker.

HSN4031A: 7.5watts?

HSN6011B: 3.2ohm, standard Spectra speaker. Loudest volume.