Tuning the Mix: How We Set Up In-Ear Monitors for Perfect Sound

When Saving Abel loaded the bus for the recent run up the eastern seaboard, the first thing the crew pulled out at arvo soundcheck wasn't a guitar or a mic — it was a pelican case full of in-ear monitors. From the sticky floors of The Tivoli in Brisbane to the high ceilings of the Enmore Theatre in Sydney, every venue on an Aussie tour throws a different curveball at a monitor mix. Getting a consistent stage sound across pubs, theatres and outdoor festival slots is half technical know-how, half muscle memory built over years on the road.

For the band, in-ears aren't a luxury item. They're the reason the vocals sit on top of the mix at a screaming rock club, the reason a harmonica line doesn't drown out the bass, and the reason Jared can pace the stage without losing the click. If you've ever wondered what goes into that little bundle of clear cable sitting in a roadie's pocket, here's a fair dinkum play-by-play of the whole rig.

Picking the Drivers and Shells

The starting point is the hardware. A triple-driver setup handles most rock needs — a dedicated driver for lows, one for mids, and a tweeter for the top-end sizzle of cymbals and vocal air. Saving Abel's monitor engineer swears by balanced armature designs for clarity, though a hybrid dynamic-armature combo gets pulled out for outdoor shows where the sheer volume of an open-air stage in Perth can wash out the subtleties.

Shells matter as much as drivers. Acrylic moulds are durable and easy to repair if a road case gets roughed up at the freight dock, but silicone shells seal better for longer sets in humid climates like Far North Queensland. The fit has to be deep enough to create a seal, otherwise low end leaks out and the mix turns to mud.

Custom Moulds Versus Universal Tips

Most of the crew use custom moulds because a tour is no place for a slipping tip. The process starts at an audiologist, who takes impressions of the ear canal. A few weeks later, the lab sends back a set of moulds that match the exact contours of the ear. Once they've broken in, the seal stays put even when the head is banging along to a breakdown.

Universal tips still have a place. If a fill-in tech jumps on for a one-off show, a pack of comply foam tips lets them get up and running in minutes. It's the same trick used by session musos playing cover sets at the local RSL — no one wants to wait twenty minutes for a moulded tip to expand before the first song.

Mapping Frequencies on the Mixing Console

Once the hardware is dialled, the real work happens on the console. Each member gets a personal mix bus, and frequencies are carved out to leave room for the instruments that matter. Bass and kick usually share the low end from 60 to 120 Hz, guitars live in the 800 Hz to 2 kHz zone, and vocals get a lift around 3 kHz to cut through.

The trick on a loud stage is subtractive mixing. Instead of pushing faders up, the engineer often pulls competing frequencies down. It's a habit borrowed from house engineers at Melbourne's 170 Russell, where every decibel counts. Saving Abel also runs a slight boost at 10 kHz for vocal air, which helps the voice sit on top of dense harmony stacks.

Onstage Routing and Ambient Mics

In-ears isolate the musician from the room, which is great for clarity but terrible for pitch and timing. To fix that, the crew uses ambient mics — small condensers pointed at the drum kit or the PA stack — blended into the IEM mix at a low level. The result is a mix that sounds isolated but still feels live, so the drummer doesn't feel sealed off from the snare crack two feet away.

Wireless packs are belt-clip transmitters running in the 500 MHz or UHF band, depending on the country. In Australia, the ACMA regulates those frequencies, and the monitor engineer checks the wireless coordination software before every show. A quick scan at soundcheck avoids dropouts halfway through a ballad at the Forum in Melbourne, which has happened to plenty of visiting acts who didn't bother.

The Rig, the Spares, and the Bag

A monitor rig lives in a two-rack space. One holds the wireless receivers, the other holds the personal monitor mixer. Everything runs on a conditioned power supply to avoid the buzz that comes from dodgy venue wiring. The whole pack weighs around fifteen kilos, which matters when you're lugging it up three flights of stairs at a heritage pub gig in Adelaide.

The spare kit is just as important as the main rig. A backup set of moulds, a handful of comply tips, a soldering iron, gaffer tape, and a fresh pack of batteries live in a separate case. The crew learned the hard way years ago that a single dead battery at a regional show can derail a set, so redundancy is part of the standard operating procedure. A spare AAA in a back pocket has saved more than one arvo set on a regional run.

Setup Component	Studio Rehearsal	Australian Club Tour	Outdoor Festival
Driver Count	2–3 balanced armature	3 balanced armature	3 hybrid dynamic-armature
Shell Material	Acrylic	Silicone or acrylic	Acrylic with vent
Ambient Mic Level	Off	Low blend	High blend with wind protection
Wireless Band	Any clean frequency	ACMA-coordinated UHF	ACMA + intermod check
Backup Moulds	One set	Two sets, plus universals	Three sets, plus foam tips
Power Conditioning	Standard IEC	Voltage regulator, surge protected	Generator-tied with isolation

Habits that keep the in-ear mix consistent night after night

• Carry two complete sets of moulds for every member, plus a bag of comply foam tips
• Run a frequency coordination scan at every venue, even if it's a return gig
• Label every cable and pack with coloured gaffer tape — nothing kills a changeover faster than a missing lead
• Pack a small soldering kit and a multi-tool for quick repairs on a pub stage
• Keep spare batteries in a separate hard case so a dead transmitter never kills a set
• Document the personal mix settings for every song in a tablet-based cheat sheet
• Check the seal of every mould at soundcheck before the first note is struck

If you want to hear what the in-ear mix is doing on stage, the best way is to catch a live show on the next Aussie run or grab a pair of custom monitors for yourself. The band keeps the touring kit humming with a few trusted suppliers, and you can browse the pro audio catalogue the crew leans on between tours. Chuck an order in before the next gig rolls around, and you'll have a setup that travels as well as any road case on the circuit.