[DCP-o-matic Users] Audio mix questions

Hi Carl, I just wanted to congratulate you on your DCP project - I love it and I'm sure many others do as well. I rarely have the need to create to DCP files but there is a special documentary project I've just completed that is set to screen in a cinema here in Brisbane, Australia and I intend to use DCP O'Matic. I've made a donation. My question is about audio and I've included two screenshots attached here as reference. In one of the shots 'WITH' I have applied the Mid Side decoder and I see it turns off the 6 boxes that control the speakers and keeps only left and right. Is this the correct way to apply what you describe as the MS Processor to achieve some centre speaker effect in the cinema? And should I change the channels from 6-5.1 to 2 channels - or 3 or 4? In the 2nd screenshot 'WITHOUT' I did not turn on the Mid Side decoder but instead added -12db to the centre speaker boxes shown in the screenshot. Will this achieve the same or similar result as adding the MS processor (or mid side decoder as it called on the software.) Would -12db be about the equivalent to the automatic mid side decoder setting or should I make it -6db or even -3db? I can see the graphs are very different. By using the six content speaker boxes I could make an imitation 5.1 mix by experimenting with these settings? Thank you for your help. Simon Toy, Director Ignition Films Pty Ltd 0419 122 943 07 3355 7641 simon(a)ignitionfilms.com.au www.ignitionfilms.com.au