Put them in a good thirty minutes before the sound check, same problem, could not hear my bass, cranked it up till I could and drummer complained it was mega loud.
The guitarist and vocals then had to turn up a bit to get the balance with my loud bass volume, too loud for the whole band, so we all turned down a touch, at which point I was struggling to hear my bass again, played the first three numbers and then resorted to taking one ear plug out for the rest of the gig.
Will be contacting ACS again tomorrow to arrange getting them changed to either a 15 or possibly a 10, as there is no way I’m going to get on with these 17’s as they are.