I only use my Sub for Home Cinema.My system comprises Sony STB930 A/V reciever,B@W 603 S2(fronts) LCR6(centre) 601 S2(rears) I thought I had everything set up OK following The REL manual which suggests using Phase 2 which lets the Amp control the output.It seems that I get the usual low rumbling effects but very little in the way of effects like gun shots etc.If anyone has a similar set up to mine any advice would be gratefully recieved.Please try to keep response simple