Shure SM-58 drop volume ch 2 though PA

[funalij]

Hi all:

I'm asking myself if it's possible what I tell you.

I have a Shure SM-57 in front of my Mesa F-30 in my gigings, channel 1 volume is't about 11 and ch.2 vol at 9 (both of them not to loud, but ch 2 louder than ch1)

When giging, people that are hearing though PA said ch 1 is ok, but when I push ch2 (soloing), volume drop a lot (through PA) and I wonder if it's possible that sound pressure in ch2 (higher than ch1) could do this strange thing. I don't believe that but it's the only thing I could think.

Have you expierence something like that?
Could be a bad microphone? (I hear goods about sennheiser 606 or 609)

Best regards
Javier

[tom]

high gain tones don't cut through nearly as well as cleaner tones. could it just be that you need to turn channel 2 higher? my gainy tones are much louder right in front of the amp than my clean tones. i doubt that it is a mic problem.

[guitarzan]

Also, keep in mind that the EQ curve might change from channel 1 to channel 2 and if your sound guy is EQ'ing the PA for one channel, it may be negatively affecting the way the audience hears the other channel.

Maybe?

[funalij]

Thank you very much Tom and Corey.

I ever learn a lot about your comments

[Armando]

How do the relative volumes sound when channel switching and not miked?? In other words, how does it sound prior to miking it up?

[Janine Doubly]

SM58's and SM57's if placed properly on the speaker cone should give you a good representation through the PA of your amp tone, IF the sound guy is not doing a bunch of EQ. Have him try the channel on his board running flat before deciding if one channel is louder than the other. Many sound guys (including myself at one time) do the "smiley face" EQ on a lot of things, scooping out midrange. Of course, the guitar is a midrange heavy instrument, so if your sound guy is doing this on your guitar mic, it will certainly exasperate the gain channel dropping in volume. Also, make sure your gain channel is not too "scooped" in the mids. Taking mids out is a sure fire way of getting "lost in the mix" when the band kicks in.