Which Kodi version for MacMini 10.6.8?

Hi Kodi community,
Generally I can find what I am looking for on the web but this one has me stumped!

What version of Kodi will run on my Mac Mini?

Spec below
1.66 GHz processor
1.5 GB Ram
Mac OS X 10.6.8

I have tried the following older releases but non seam to work and my mac says they are not compatible.

kodi-14.2-Helix-x86_64.dmg
kodi-14.1-Helix-x86_64.dmg
kodi-14.0-Helix-x86_64.dmg
xbmc-13.2-Gotham-x86_64.dmg

Any help or if you can point me to a thread which shows what to do that would be great.

Cheers