Hello, I just got my Umik-1 Mic. I have two subs connected to two subouts and have been setup with Audyssey XT32/SubEQHT already. I would like to see the response of each sub as well as the two combined. I have never used REW before and I noticed that it does not seem to have selections for sub channel 1,2 and combined so what is the best way to do what I want to do? Thanks.
Depends how you are connecting the test signal to the processor and how it handles redirection to the sub outputs. Might be as simple as switching off the sub you don't want playing to measure each individually.
Thanks John, I am using a 25' HDMI cable to connect the AVP. I was also guessing the way to do it is to turn one off at a time and then leave both on when doing the sweep. I just want to be sure if there isn't a proper or better way to do it. I am going to do just that and seee what it works.
Is there a way to use the 7 channel stereo mode to plot the overall response of all 7.2 channels so I can see when the low frequencies overlap among all speakers including the subwoofers? I am using HDMI output with the Umik-1. When I tried outputing say the front left channel, I would get the SL and SBL but not the right side speakers so the AVP is only downmixing one side. If I use RCA inputs I am sure I can just use a Y-cord but I don't know how to do it with HDMI. I just wonder if REW has a built in downmix feature.
There is no downmix feature (REW is just controlling the channel selection, not doing any processing of the signal). You can output the signal on a second channel by selecting it as the timing reference output if you are using ASIO drivers.
for chosing a specific channel to test with REW , use the new EqAPO 0.9 (search the thread) and use the new command Copy: in config.txt
ex: all my 5.1 channels are set to 0 except Rear Right which send the right channel
Copy: RL=.0 L=0. R=0. C=0. RR=L SUB=0.
To save a graph that is small enough to post, is capture the only way? Using capture, I find the text font size on the axis almost twoo small to read but I cannot find a way to enlarge them.
The graph font size can be increased in the View preferences (REW must be restarted to apply any changes to the font size). I suspect you have REW full screen and so your graph is being scaled down a lot, an alternative is to resize the REW window so the graph is closer to the size you want and doesn't need as much scaling.
Hello John, are those "distortion" figures" accurate? I know they are at the mercy of the mic, sound cards, and the AVP, AVR etc., but are they other than those external factors, how accurate are the THDs shown by clicking the distortion tab? On thing I noticed was that they didn't seem consistent. Repeating "measure" would yield different THD figures, somethings consistently high, other times low.
If successive measurements don't give repeatable results something is wrong with the measurement setup, which you should track down. Better starting a separate thread for that.
The shortcut keys can be a bit temperamental sometimes, they seem to get swallowed by the OS on occasion for no obvious reason, and some are used by the OS for other things - for example, on OS X the ctrl+left/right keys are used to switch workspaces so they never get to REW. They usually work though, at least on Windows and OS X with the latest REW beta (I don't have an original V5 install to try right now).
Hello John, I have not used REW for a while and forgotten something. I am using a Umik Mic and have a cal file. Do I use the same cal. file on the soundcard tab? It let me use the same file on both the soundcard and the Mic/Meter tabs but leaving the soundcard page blank yielded slightly different frequency response in the high frequencies.
No, the mic cal file is only for the mic, otherwise you are applying the cal twice.
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