sorry for the thread resurrection, but i'm still not quite sure about this...
so, how would i have to set it up in cubase sx3 so i can dial my amp/pod/whatever i'm using to get the preamp signal while hearing the signal coming through the impulse, without having to record-listen-tweak-rerecord-compare-etc ?
tweaking the amp while hearing it through the cab and then impulsing the preamp signal afterwards isn't really an option imho, as it obviously sounds different in the room through the cab as it does through the impulse of another cab/poweramp.
also, you said that you insert the impulse on the input bus, wouldn't that mean that you're recording the already impulsed sound, with no possibility to change the impulse afterwards?