I struggled to find the answer here on searches, there's just so much info.
But, a guitarist ( yes one of those, not a bassist ) says that a human being with normal hearing, can detect an increase of less than 3db.
I thought the minimum increase a human ear can detect was 3db, assuming the human has no impairment to the ears. Or maybe it's 2.9db or something. Is 3db just a ball park figure ?
So, you have a bass cab that has a driver with rated efficiency of 100db. You set your amp volume at number 5. You get x amount of perceived volume.
You then change the driver ( same cab , same TS spec, leave amp volume knob where it was ) but the driver is now 103db efficiency.
Can one perceive a volume increase. ?
All things being the same again, but with a driver with efficiency of 102.5db . Can that increase be perceived ? Or what about 102db... ?