I'm struggling to understand what an IR does. Most seem to be little more than cabinet simulations. What am I missing?
I'm using amplitube which has amp and speaker simulations plus room, mic placement and DI mix. The track in question has a Squier Precision bass into an Ampeg B15 amp sim, through a Fender 8 x 10 cabinet sim. Most of the signal is close simulated mic'd via both dynamic and condenser mics plus a little room mic through two condensers with not too much width. No DI is used.