Am sure that someone else will, chime in here but that Mac is wasted or even inappropriate with that speaker.Can run on probably (without knowing sensitivity rating) but S.E.T amps or 6 watts to 18 Watts would be a choice (really affordable stuff like Almarro).For solid state T power like Redwine or Pass First Watt would probably sound great (and give better bass control if not harmonics of tubes).Then you could go with a 40-60 watt push pull tube amp etc.I have heard some folks just think that 12 ohm coil speakers don't control bass (Google Zu Tone and you'll get and add for a pair of 12 ohm Tone monitors but that could much smaller bass drivers than you have or what's inherent with 12 ohm).So I think that you don't need that big an amp and could get a better match.The load versus the amp design and bass control well I want to hear others or will call my sound engineer buddy about that.But something from 15 to 60 watts depending on what kind of sound you like is what I think will be best.How'd you end up with these anyway?Check reviews of the Zu's to see matches with other 12 ohm designs.
Chazz
Chazz