Hi there,
The series IV have only just recently been announced, so you'll only just start seeing them
filtering into stores in the uk if you're lucky.
Swr are now loading the goliath range of cabs with eminance drivers, so that they have now
increased the power output. I believe its by an extra 20-25watts per driver. So in the mark IV
goliath seniors its increased the total output by an approx extra 150-200watts from what it previously was.
The seniors are great cabs, i was toying with the idea of getting one of these a while ago, but i've had to settle
for using upto 4 x goliath juniors on larger gigs or 2 on my standard gigs due to me only having a nissan micra.
Hence why i'm selling my beloved 1x15 basic 2-way cab.
Hope this helps, good luck with selling it.