soffit mounting Tannoy Little red's

[reservoir1]

Hi I've started another thread about my new build here:
http://johnlsayers.com/phpBB2/viewtopic.php?f=2&t=13722

hope it's not too confusing to ask another question in the speaker dept.

wanted to know if I can soffit mount my speakers. They are pretty old, passive speakers - Tannoy little red's, with 12" drivers - they are dual concentrics, but think that that's not a problem - I just need to be aware of speaker height - I'm driving them with a quad amp.

I like the idea of soffit mounting them - wondered if you guys reckon it'd be cool to do it?
cheers
chris