AVS Forum Special Member
Join Date: Aug 2002
Location: Aurora, IL, USA
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I finally got everything talking today! Running a Windows 7 virtual machine on my Mac (32 bit version of Win). It took uninstalling the driver for the sound card, uninstalling the AP20 software, Matlab, java, etc. and reinstalling everything from scratch (probably the third or fourth time doing that)- but I was able to measure and come up with coefficients for an Optimization.
Considering that a week ago I was being told by pretty much everyone at Datasat that nobody ever got the software working with VM ware software instead of Boot camp; I'll take the small victory.
So, to the somewhat nitty-gritty of what I've observed so far: Dirac requires a minimum of 9 measurements to create a coefficient set for Optimization. You're able to look at magnitude response and impulse response- but I didn't see any place to look at phase response. After loading the Dirac optimization into the RS20i, I can say that there was certainly an audible difference- the FR was noticably flatter given may particular temporary test position. However, FR is only part of the equation- In my next go around, I'm going to measure Dirac on and Dirac off using my SMAART rig to look at FFT measurements of what's going on with Dirac in the areas of magnitude, FR, and phase response- I think it will prove enlightening.
Just as a reminder- this is a Beta unit, not all of the mods to the AP20-base of this product have made it. At the moment, I'm simply getting used to the UI of the device and the software necessary to install it properly and get the best performance. In my current iteration I'm using a pair of ATC Active10s on a table with the RS20i sitting atop a Denon DV-5900 connected via SPDIF, and my ipod connected via Monster 1/8" mini-to RCA cable into analog input 1.
- I know, nothing reference, really but certainly good enough to get to know the device's UI and software.
From what I've noticed so far, the Datasat is a very good sounding device (mostly out-of-the-box observation)- since I haven't delved into what happens when I put this into the theater....yet. I want to practice with it for a while before I jump from 2 channels to 16 (my particular room can use all 16 channels).
Jeff, no; other than a Beta unit software bug concerning the screen saver, this unit appears to be pretty solid.