3DHardware.net heeft een review geplaatst van de Labtec ATX-5820 speakers. De main feature van deze set is de Virtual Dolby Surround chip die er in is geplant, want voor de rest is-ie hetzelfde als zijn kleine broertje, de ATX-4620. Hier heb je een gedeelte over dat Virtual Dolby Surround:
Virtual Dolby Surround sound is engineered to produce theatre-like audio that seems as if it is coming from all around the listener. This is acheived with Interaural Time Delays (ITD), Interaural Intensity Differences (IID) and Head-Related Transfer Functions (HRTF). In addition to the sound from the left and right speakers, the signals for the other channels are processed to match these time delays, intensity differences and transfer function differences. The result? You'll hear sounds coming from the center and rear, even though there are no physical speakers there. Of course, you'll need Dolby Surround-encoded movies or games to benefit from this effect. But does it really work as they claim? Yes. Does it work as good as a real 5.1 system? No.
The Virtual Dolby Surround is a nice feature, but it can in no way compete with the real deal. Sound coming from two speakers will always sound, more or less, like sound coming from two speakers - it will never sound as if was really coming from 5 speakers. Get the point? With the effect turned on, the DVD movies become a tad more immersive due to the Virtual Dolby Surround sound. Still, if you really want to enjoy Dolby Digital sound, go for the real deal.