by jorge » Wed Jul 06, 2011 5:05 pm
In ear monitors (IEMs) are the state of the art in on-stage monitoring of live performances and have several advantages and disadvantages. The advantages are:
1) they reduce on-stage sound levels since on-stage speaker monitors are no longer needed
2) backline amps (eg, guitar & bass) can be run at much lower volumes since the musicians don't need to hear them directly. With a good PA system, the lower stage volume can greatly improve the overall sound of the band in the audience areas.
3) actual in-ear sound level for each performer can be much lower than with on-stage monitors and this can help prevent noise-induced hearing loss in the musicians. To me this is a very important advantage.
The disadvantages are:
1) expense (eg, $1K or more for each IEM transmitter/bodypack receiver/earpiece not including cost of custom earmolds), cheap units are notoriously unreliable. A separate radio channel (with its own transmitter/receiver/earpiece) is needed for each band member. Battery cost to keep fresh batteries in each bodypack each performance can become substantial.
2) you really need a live sound engineer who knows what he or she is doing at every gig
3) all instruments need to be separately mic'ed so the engineer can produce the appropriate custom mix for each musician and singer
4) complexity: many more channels and aux outs are needed on the mixer increasing complexity and expense of mixer, cables, and engineering and the time required for band setup time and sound check may be much longer. Many bands have a separate monitor engineer in addition to the front of house engineer, just to run the monitoring system.
5) some performers just can't seem to get used to playing or singing with IEMs in their ears
6) IEMs reduce ambient sound to the point that a good ambient mic system and engineer to performer talkback mic system is needed, or some performers feel very isolated and can't perform well
7) even with top engineers and equipment, reliability is not as good as on-stage monitors
8. the FCC has recently changed the legally permitted radio frequencies and many used units are now illegal (and being sold on Ebay and elsewhere to unwary purchasers)
Good engineers can sometimes use a mix of IEMs for some performers and on-stage monitors for the rest of the group, but this requires good cooperation of the members of the group. For most of us, who play small gigs in small venues with a few mics and one or two onstage monitors, and run our own sound from the stage, IEMs would require a substantial additional investment. Congamyk, do you have a sound engineer with your 11 piece band? How much did your IEM system cost for the whole band?