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Mic Placement for the Stage Print E-mail
Dec 28, 2006
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Need to know how to attach a mic to an actor’s head and conceal it from public view? Read on.

How do you attach a microphone to an actor’s head and make it invisible? Following is a guide that will not only answer this common question, but also help you understand how mic rigs are built and used. First, the supply list:

Your favorite miniature microphone (Sennheiser MKE2, DPA4060, Countryman B3 or B6 or what have you). I prefer to start with mics that are light flesh tone, because it allows the greatest number of possibilities when it comes to coloring them to match their surroundings.

1/16-inch round elastic. Again, I prefer to start with white and color it as needed. In lieu of RIT or some other dye, we have used 10 tea bags (regular Lipton, not the fancy herb stuff) and a bowl of hot water to darken the white cord to a light tan.

Black and Brown toupee clips, assorted sizes. (Although we use more of the small size than any other.)

Art markers. Assorted skin and hair tones. It’s usually good to have several shades of brown, black and grey. We also have some browns that skew towards red. We use Prismacolor Art Markers with DPA microphones, but have found that the Prismacolors don’t work as well on Sennheiser and Countryman mics. We have started to use Zig Paintys on the Countryman mics. The color is a little shiny compared to the Prismacolors, but it lasts longer on the Countryman.

Flexible super glue. (Miracle Glue, Foam Adhesive)

Floral wire — small gauge, solid wire.

Moleskin or fabric surgical tape.

Hellerman Tool and Hellerman Sleeves or surgical tube. Merithian has Hellerman tools for sale.

Now it’s arts-and-crafts time. The process can be time-consuming, and probably should be undertaken well before the half-hour call. As every actor’s hair and skin color is different, you have to start with samples of various coloring options. Colorize a broken mic wire with all of your art marker colors so you have a color template to use for comparison purposes. Take a couple of minutes with each actor to do a quick color match using the color template wire. You can also find out if the actor has a preference as to using elastic or clips now, too. (Not that they will always get what they want, as there are other factors that determine the form of the final rig.)

Also try to get some rough measurements. The most important measurement is from the center of the forehead to the edge of the hairline on the back of the neck. This may be different for a clip rig as opposed to an elastic rig. It’s also easiest to use the actual mic to do the measurement. Hold the mic in place on the actor where it needs to be, and stretch the wire through the path it will follow. Mark the location of the rear hairline on the mic; that way you know how far to color the mic wire to match the hair.

Elastic Rigs (Halo)
Halo rigs are by far the easiest to make and the easiest to put on. They can be hidden quite effectively if colored and fitted correctly. If done improperly, they end up looking like the actor is wearing a hairnet. Halo rigs don’t work for everyone; the hairline has to be such that the mic wire and elastic have a place to hide and aren’t stretched across the forehead without the cover of hair. Halo rigs can be difficult to hide properly if the actor has a receding hairline or a “widow’s peak,” as the wire will want to run across the forehead. Bangs are also very helpful in hiding the head of the microphone.

For an uncolored halo rig, the elastic is tied to the mic wire just behind the head of the mic and again several inches down the mic wire, resulting in a circle that can be placed around the actor’s head, with the mic in the center of the forehead at the hairline. Use a bowline knot with a half hitch to secure the elastic to the mic wire. It holds well, and before it’s tightened down it can be slid on the wire to get the position correct. Care should be taken not to make the knot too tight, as that can be damaging to the mic wire. Sometimes a drop of superglue on the knot can save re-tying knots that have come loose.

The Clip Method
Toupee clip rigs can be used to blend into the hair when halo rigs are not an option. Some actors prefer them to the elastic rigs; the clips, however, can be hard on the hair and end up pulling hair out, leaving thin spots unless care is taken when removing the rig. Clip rigs are time-consuming to build. Attaching the elastic to the clips and threading the mic wire through, as well as getting the clip placement correct for the application, is once again a trial and error proposition.

The Ear Rig
I am not a fan of the sound of the ear rig, but sometimes it’s the only option. It is a piece of coat hanger bent into the correct shape. The mic wire, a piece of floral wire and a coat hanger are held together with Hellerman sleeves. A little moleskin or fabric surgical tape covers the Hellerman sleeves to provide a little comfort for the actor.

When painting these rigs to hide them, there are a few things to keep in mind. Remember that this is camouflage. In the hair, using color that’s just a little darker is easier to make disappear. Military camouflage is multi-color and multi-pattern. Varying the color a bit usually gives better results than solid colors. It’s all about trial and error to see what works and what doesn’t. If you’re trying to hide a wire across open expanses of flesh (down someone’s back for instance), generally going just a bit lighter works best.

You’ll also need to perform routine maintenance on your rigs. Mics don’t last forever, and the knots, elastic and clips get old, and colors fade. Be sure to write down what works for each actor and all the parts you need to build each rig. For the principal roles, we generally build two for each of them so that if one breaks, we have another ready to go. Building a new rig is just too time-consuming and tedious to have to do it at the halfhour, or worse, during a performance.

In an ideal situation, the sound designer would have absolute say over mic placement, but that’s not how it works. I prefer the center of the forehead, provided the shape of ones brow allows the mic to sit on the front of the actor’s face and not the top of their head. Of course, the use of hats in the production could influence mic placement, as sound produced with a hat tends to be hollow and loud. If an actor has a lack of hair, perhaps the only option for unobtrusive miking is the ear rig.

Jason Pritchard is head of audio for Cirque du Soleil’s production of LOVE. A version of this article originally appeared on the Bright and Loud Web site, (www. brightandloud.com).

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Add your input:

Comment by GUEST on 2007-01-04 08:18:29
Hi my name is Philani, im a sound technician at Playhouse in Durban South Africa. I fully agree with Jasons article on mic placement, we just finished a month run of 'My Fair Lady' and i had a problem "Alfred Doolitle" and had to give this long lecture of why placing the mic on his forehead would not work on him cos there is a part where he wears a hat for quite some time, ofcourse my explaination to him did not make sense at all, it went as far as making a demo for him listening to a person wearing a mic on the forehead with the hat on and without, eventually he was convinced because the difference is unbearable at times. 
 
While we are on the same subject, how do you handle the phasing that happens when two or more characters wearing mics speaks too close to one another without muting the others

Comment by GUEST on 2007-01-11 09:12:02
Hello Philani, 
Regarding your question about handling two or more characters speaking in close proximity without muting the others, the answer lies in the question. Muting the others, or Line-by-Line mixing is the most common method of controlling the phasing. It takes a skilled engineer to pull it off, and have the performance sound un-manipulated. Many times if two actors are doing a scene in very close proximity, only having one mic on sounds better than trying to switch from one to the other in rapid succession. 
 
Another method is to use two sound systems and allow the signals from each mic to combine acoustically. This is generally called an A-B system. The phasing that we hear when two the two signals are electrically combined is created when the one signal gets electrically summed with the same signal, but slightly out of time. Electrically the two signals are correlated with each other, just temporally displaced. Sending each signal to it's own speaker effectively de-correlates the signals and that de-correlation makes it more difficult to hear the phase problems.  
 
Line-by-Line mixing isn't the only way to combat the phasing issue, but it is the least expensive. 
 
I hope that helps to answer your question. 
Thank You for the comment. 
 
Jason Pritchard 

Comment by GUEST on 2007-01-11 11:55:15
To avoid phasing problems with two actors you can try puttung one mic out of phase with an xlr phase reversal adapter that plugs into the mic cable which attaches to the mixer. Or better yet if the mixer has a phase reverse button on the mic channel that will work also. Just be careful that when you engage or disengage the phase switch it does not pop. You should test this first before the performance, if it does pop simply mute the mic channel when you switch it.

Comment by GUEST on 2007-01-11 14:15:23
IN response to Philani... My name is Chris, I am a sand-in engineer at the Fireside Theater in Fort Atkinson, Wisconsin, USA. I have found that if you have the phasing issue with two actors, bring the level on the strongest actor down about a third. That way you have the strong on the weak mic and you eliminate the phase. 

Comment by GUEST on 2007-01-11 15:09:03
Ride the levels on the 2 actors and hit the phase button on one of the actors, just in case.

Comment by GUEST on 2007-01-15 11:44:32
Hello Philani, 
 
Regarding your question about handling two or more characters speaking in close proximity without muting the others, the answer lies in the question. Muting the other mics, or Line-by-Line mixing is the most common method of controlling the phasing. It takes a skilled engineer to pull it off, and have the performance sound un-manipulated. Many times if two actors are doing a scene in very close proximity, having only one mic on sounds better than trying to switch from one to the other in rapid succession. 
 
Another method is to use two sound systems and allow the signals from each mic to combine acoustically. This is generally called an A-B system. The phasing that we hear when two the two signals are electrically combined is created when the one signal gets electrically summed with the same signal, but slightly out of time. Electrically the two signals are correlated with each other, just temporally displaced. 
Sending each signal to its own speaker effectively de-correlates the signals and that de-correlation makes it more difficult to hear the phase problems.  
 
Line-by-Line mixing isn't the only way to combat the phasing issue, but it is the least expensive. 
 
I hope that helps to answer your question. 
Thank you for your comment. 
 
Jason Pritchard 

Comment by GUEST on 2007-01-16 08:26:02
Phasing can be controled (sometimes) by using the phase button on one of the mic's when the two or three actors are in close proximity. Somtimes all you need to do is change the mic placement on the actors. EX: Place mic's over the temple insted of center of there head. I often have 16 - 24 live Contryman B3's hot at the same time. I find if I have all the actors place the mic's over the same temple I have less problems when they are in close proximity and/or faceing each other, the mic's are as far apart as posible, and of corse if you can dump or atleast reduce the volume of one of the two that would help as well.

Comment by JacobCoakley on 2007-01-16 14:17:43
Hi guys - This is Jacob Coakley, managing editor of SD. Comments have been a little wonky on our new site, but we're working on getting them posted faster. Philani, I'm sorry it was such a delay, and hope our readers helped you out!  
-Jacob

Comment by GUEST on 2007-01-23 15:33:57
I have done two shows as onstage talent where I was required to play harmonica and/or speak (Big River and Ain't Nothing But The Blues). Both instances we ran the wire for the mic up my back, up under a hat and with the mic laying on my forehead, pointing down, just under the hat brim where it was minimally visible. The hat was snug enough to stay in place and held the mic perfectly still through some vigorous movement. The FOH guy had no problem getting good coverage of the instrument. 
 
Ed Kliman

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