Re: Studio XPS 1645
07 Nov 2009 05:33PM
Both the 1640 and the 16450 have IDT 92HD73C audio chips, and use the same driver version: 6.10.0.6217, A15
From that I would conclude they are both the same audio. Some additional information about the 1645 is that the audio system is "7 Watt Integrated Stereo Speakers with Subwoofer".
That sounds the same as the 1640 which the Setup Guide describes as "2 watt per channel with 3 watt subwoofer", so I think you can go with the audio specifications as listed in the 1640 guide.