if you are going to calibrate the system with REW
its best to pick an input and stick with that input.
you need to decide which digital to analog convertors are going to be used.. and calibrate the dac you choose.
because one dac might sound different than another dac, and that sorta defeats the purpose of calibration.
chances are, you wont be using an impulse response file in a convolver unless the computer remains connected to the radio in the van.
if the computer isnt gonna stay and play music, then simply using an RTA with pink noise will be enough to calibrate the equalizer.
if the computer is going to stay in the van, then i highly suggest you calibrate any equalizers you already have.. and then take a new measurement with REW to get an impulse response file.
that needs to be converted into .pcm with a sound editing program.
there is a tutorial/guide available here that i used:http://www.duffroomcorrection.com/im...Guide_v1.0.pdf
except, i didnt measure each speaker individually.. i did everything in mono.
when DRC outputs the file, i had to guess which one was right.. but you can see that there are only two new files.. so it must be one or the other.
i havent discovered if DRC will work with anything other than .pcm
they say .pcm is a .wav file without information headers.
its hard to find programs that work with .pcm
its easier to find programs that work with .raw
but i dont know if .raw is the same as .pcm
i'm currently looking into that now.
i tried the convolver plugin for foobar and i also tried the SIR impulse response processor plugin.
the SIR program requires a VST plugin for foobar.
a note though,
dont expect your results to be close to perfect unless you have the microphone calibrated (correction file for flat response)
and i wouldnt expect those microphones to work with all of the sound pressure from the subwoofers.
the microphones will probably distort if the subs are too loud.
i'd say you are in for a world of compromises considering this achievement.