[quote name='chris_b' timestamp='1495094426' post='3301139']
The difference between the 8 and 4 ohm rating on any amp will be minimal and barely noticeable in a band. What you [i]will[/i] notice is the number of speakers and, more importantly, the sensitivity of the cab.
[/quote]
This. If you really want to push the bass out, invest in more speaker surface area.