Unfortunately It isn't the 28M but it's very similar. I can't find it anywhere online and I don't have access to the rack till Monday but when I get to setting up I'm gonna open it up and see if the
line/mic
switch makes a difference.
Just for reference, on the 28M the mic/
line switch is right by each input on the rear panel. Some other mixers may have them all
grouped together for all inputs on a single mutli-switch
DIP switch. And yet others may have the switches inside the
mixer chassis.
The people who installed the
system didn't think out the space all that well and I've had to fix a lot of other install errors so it wouldn't surprise me if it's just a matter of the mic/
line button not set properly. Thanks all for your help I'll update on Monday. Wish I would have found control booth 2 years ago when I started working in this space. Would have saved a lot of headaches and trial and error, although I have learned a lot that way.
Just to be fair, unless you have documentation showing that was how it was installed you may not be able to assume it. Many of the items I find during
system commissioning are things like improper settings, however I've had end users start reconfiguring installs before the install was even complete, I had one job that every time I came on site the first thing I did was go and check some of the switches that the user kept changing so they could listen to music while they ate lunch in the
Auditorium. On another project the TD pushed for us to get through
system commissioning and acceptance so that he could then start changing everything to be the way he rather than what the Owner had defined, he was literally rewiring things before we could get out the door. I even had one case where I changed companies and a few years later was hired to 'fix' a
system I had initially designed, which we did by simply pulling out the original plans they had in the rack and undoing all the changes and alterations that the Owner and others had made over that time, with their liking the result so much that they immediately hired us for other work.
I guess my
point is there are lots of silly errors often made during installs but probably just as many made after an install is complete or in a misguided attempt to 'fix' or change something.