Surround Sound Options: 5.1 or 7.1?
Tuesday, February 28th, 2006Sometimes bigger is not better, especially in the case of surround sound systems. Most people would think that 7 speakers should deliver better sound than 5, but the majority of home theatre systems are not set up to handle 7 speakers and even if they were, the media you’re playing is optimized for 5. If I haven’t confused you with numbers yet, the guys over at DesignTechnica are sure to turn your brain to mush in this great article lamenting surround sound 7.1:
“In film exhibition, 6.1- and 7.1-channel systems make sense. At home, however, 5.1 channels are quite enough. It’s easy to generate a solid soundfield in a small space with three speakers in front and two on the rear of the side walls. To me it’s self-evidently nonsensical to have four surround speakers outnumbering the three in front…”
“If you’re worried about missing out on back-channel information in surround soundtracks, I’d advise you not to fret over it. Most DVD soundtracks are either Dolby Digital 5.1 or DTS 5.1. The high-res music formats, SACD and DVD-Audio, are strictly 5.1-channel affairs with no 6.1 or 7.1 equivalents. If you feed a 7.1-channel receiver with a 5.1-channel signal, it will usually fake something for the back-surrounds using Dolby Pro Logic IIx processing. For my own part, I’d rather listen to five (.1) honest channels and dispense with the sonic smoke and mirrors.”
Basically, if you’re looking for the best sound for your buck, 5.1 should suffice unless you have a stadium theatre in your livingroom.
