I still don't think you understand what we are talking about, we aren't talking about the cabin gain, we are talking about your target alignment starting point. This where you reliably predict system response and know what the actual output before cabin gain is. It is loudspeaker 101. It doesn't make sense to arbitrarily pick volumes as a starting point, we just want to make sure the novice readers understand this. We aren't trying to clutter your thread, it is open for everyone. We are trying to ensure more than just you learn from this. Nobody is saying you can't design to your goals, we are just trying to let everyone understand that the approach isn't as objective as it could be...