I went to see a fellow TB member's band on Friday. It's a '70s/'80s cover band for the most part. Musically they're quite good, male and female vocals with two guitars, bass and drummer. The lead guitarist is also the male singer. Both guitarists play humbucker equipped guitars (one a Les Paul, one a Wolfy) through Marshall half stacks. Both guitarist's vary between clean tone (when needed) and distortion. In either case, both guys have their amps set for too much low and low mid grind with not enough brightness. As a consequence, the bass player's sonic space is taken, the vocals are crowded out by guitar and the room that they played in resonated away all night. The bassist is the only one in the band that wears ear plugs. Because of this, he's dismissed as not being able to "really hear what's going on" when he tries to make suggestions regarding tone settings. Plus it's kind of the "what do you know, you're only the bass player mentality". I'm sure that he's very positive and tactful in his suggestions but isn't getting anywhere. Does anyone have any suggestions on how to handle this very delicate matter?