Reply to Output volume, is it quite low?

Played my S4 out first time last evening .
It was great, but I found the output a bit quiet. I play the same bar every Friday so I know the setup there, I used to use my DJM400 and there was enough boost to push the bar's main limiter into action, but last evening I was struggling to get the volume up without running into the red.
I had Traktor's limiter on and started out with the master (software) set to -5.00 like I always do, but ended with that up on 0dB and the hardware master on max

Anyone else had this problem?