You are correct that I am using the mixer and recording setup as my calibration equipment. I get the imppression this may not be the best way to do this.
Here is a link to the
EMU 1212M PCI soundcard product info You can see the digital and analog inputs on it very well on the EMU site. The
product tour page sort of shows the EMU control panel which functions as an internal mixing board. This is also where inputs and outputs are monitored.
My hope was to route the output test signal of REW through the EMU interface as a WAVE source. That in turn would go out to one or two of the outboard Tascam mixer channels. I have this configured correctly and working properly now. That signal goes into a stereo power amp and monitors to be measured with the test mic.and EQ'd as necessary.
I want to run the REW signal from my mixer output into my home theater Harman Kardon AVR 154 CD inputs and out to the speakers and subwoofer to EQ that setup, too. I would have a test mic. in the listening position fed back into the Tascam mixer. The Tascam mixer would send the mic. input signal through the EMU sound card back to REW.
There are a couple of other options; I can just run REW on my laptop, calibrate the laptop mic. and run measurements that way. But, I wondered if using a test mic. going into my either of my mixers, which have acceptable quality mic. pre-amps with phantom power, would give more accurate test results.
The other option is to use my Soundcraft mixer which has very good mic. pre-amps with the test mic connected to one of its input channels, then feed directly into the balanced analog inputs on the EMU 1212M soundcard. That signal hopefully would go back into REW for analysis.
I could run the EMU's analog outputs into available inputs on the Soundcraft which would then go into a 2-channel monitor system or through long RCA cables to my home theater room.
I may need to try a completely diferent approach. This seems like its getting more complicated by the minute.
I'll look around on the forum to see how others are testing their systems.
Thanks again for the help.
I hope this gives you an idea of how I have been trying to configure my measurment setup.
Have a nice day.