Board settings for mic'd amp question.

[guitarSQUIRELL]

Re: Board settings for mic'd amp question.

Don't use instrument (shielded) cables for speaker cables (unshielded). For any amp to speaker connection, use or make proper speaker cables. Use all shielded cables on the input side of the amp.

That is what i am doing now. We had ran a speaker cable because i was using my Micro Terror on stage and a speaker under the stage in the box....now we are fighting a buzz and its coming from the speaker cable since we didnt change it when i did away with the MT and put the AC15 in the box...

 

[guitarSQUIRELL]

Re: Board settings for mic'd amp question.

Well, I replaced the speaker cable with an instrument cable and the HUM went away, thank goodness. I listened to the mix the FOH had and it sounds phenomenal. I actually went to the board myself and made sure that my channels EQ was FLAT this time and it couldn't get any flatter. Everything sounded GREAT. Thanks for the tips guys.

 

[eclecticsynergy]

Re: Board settings for mic'd amp question.

If possible, try taking your in ears out for a second to see what you sounds like FOH. Ideally use a long cable to get out to where the audience is and listen from there. Regarding your microphone, I typically don't mic off-axis unless it's a secondary mic on the cab, or if I need the extra midrange. Off-axis micing is one of the tricks Jimmy Page used BITD to make his Tele sound more like a Les Paul.

Regarding having the mic right on the grill, that can cause something called proximity effect which boosts low end. If the increased lows are too much, either move the microphone back a few inches or maybe try using the low cut on your console.

I've never found the proximity effect enters into the equation much using an SM57 on guitar cabs. With most cardioid dynamic mics the effect is limited to a very few inches. This is especially true for 57s; it seems only to be appreciable in the last inch or so, and a speaker's dome & most of the cone are a couple of inches behind the grillcloth- in the old days I'd often shove a 57 right up against the grill on a live stage without boominess.

Proximity effect on better mics can extend to five or six inches; a good ribbon mic sounds huge on a cab. IMO with 57s the effect is fairly minimal. I should confess though, that opinion was formed long ago- it's been some years since I recorded with one. Maybe I'd feel different if I were using them today.

 

[DrNewcenstein]

Re: Board settings for mic'd amp question.

I keep my 57 about 6-8 inches away from my 2x12 cabinet, perpendicular to the cab face. The cabinet is in another room and what I hear out of my studio monitors is what I hear when I walk into the room with the cabinet.
Of course it's also loud AF (100w JCM800 head using amp distortion with pedal clean boost), which is why the cabinet is in another room.
Any closer than that and the mic channel goes red. I get no hiss and hum, and I'm using speaker cable for the cabinet connection.