The 1/4" output port on the Mobile is unbalanced and the 1/4" input port is balanced, so using stereo plugs is not correct.
You need to use 1/4" TS plugs, to resolve this. Simple solution would be to get the
TS to RCA adapters and use an RCA cable.
brucek
Thank you!
I don't think I had the drivers/installation of the M-Audio MobilePre right, so I uninstalled and re-installed with the latest drivers which is for XP SP2 and SP3.
And ...
I was suspicious that my plugs were not what I needed, so before I even read this I got the "mono" (which I believe is the same as TS) plugs and tried the set up. Funny thing: it didn't work. Then I tried using the stereo plugs again and it worked. Can't figure it out. I need to play around more. One of the issues is that control settings are called different things.
But I did go all the way through the process of calibrating the card, calibrating the SPL, and doing a few runs with my subwoofer.
My current wish is just to measure how effective the EQ that my AVR comes with is (Audyssey MultiEQ XT). I would like to send L and R signal to the AVR and then measure the sub alone, the fronts alone, and the 2.1 in combination with various crossovers. I'm thinking that there may be room issues, for example, with the mains that using a slightly higher crossover to the sub would fix, since the sub is in-between. Or vice versa. Not sure how to hook things up to accomplish this. Specifically, I'm not sure how to connect the M-Audio to the AVR. If I have to limit the connection to one wire, then maybe someplace there is a way to send "mono" input to the AVR and have it distribute the signal to L, R, and/or sub.