[quote name='pendingrequests' timestamp='1353858466' post='1879029']
The suggestion that they should downsize or change their rig isn't realistically going to happen.
If I spent a good amount of money and my time investing in my bass rig, then some new guy said to me, "you should change it, its too loud". I wouldn't be best pleased with this new member.
Its an unfortunate situation, but the two guitarists will just have to find out the hard way (from a promoter or potential manager or other source) that they are too loud and if they want to push further, they will need to sort it.
[/quote]
I have invested plenty but would still expect to be told not to use my full rig for gigs where it's not required, if someone is using the wrong gear for the gig when they have other options ie their smaller amp I see no problem in telling them?