Another newbie with a dumb question - Kontrol S2 set-up issues

Another newbie with a dumb question - Kontrol S2 set-up issues

Hello all, from grey England!

I’ve recently bought a 2nd hand S2 and I’m having issues getting it dialed in.
Everything seems to work fine with it, except that there’s a small delay between the output and the monitor.
I’ve set this up as simply as I can, as that’s how it will get most of its use (I have 1210’s for doing proper mixing on).
I have a windows 8 Lenovo ideapad with an i7 processor, the S2 controller itself and then a portable speaker hooked up to the output using a phono to jack lead.
I bought this unit to be something I can throw in my suitcase when travelling, so I can mess about with mixes on the move.
As it is, it’s useless to me.

Help!!