Yes, just switch the red and black speaker leads on your front (stereo) amp.
By the way, I mentioned this only so you were aware of it, but as Dan says, the phase issue in Home Theater is pretty moot. Absolute phase is affected by many things, including recording microphone wiring, etc. I would venture to gues that 20-30% of your cd recordings may well have songs or parts of songs that are recorded with reverse absolute polarity. I postedearlier that my Analogue Productions cds, like Janis Ian's Breaking Silence 24k gold cd, is in fact inverted phase. There's even a site that has charted inverted phase and they claim most major labels are inverted anyway (Silent Running Audio; they have a downloadable pdf chart)) So, on stereo stuff you might want to make sure you are listening closely (duh) for center image focus, and this would be the case with ANY preamp. On HT stuff, the assumption is that it is in surround mode and that we're dealing with 5 or 7 channels, and phase is the least of the audio issues you are likely dealing with, unless every speaker is identical and each is located perfectly within a symmetrical soundstage.
IOW, switch the leads at you stereo amp and then realize you probably have 70% of your cd's tackled. Listen for center image focus and don't fret the HT stuff so much.
Ted
