Two ways to pick up a voice
Most studio dialogue comes from one of two sources: a small lavalier clipped to the presenter, or a boom microphone held or hung just outside the shot. Both can sound excellent. Both can sound poor. The difference rarely lies in the microphone itself and almost always in how it is placed, who looks after it and what the programme asks of it.
I am a lighting designer by trade, but I spend a good part of every studio day beside the sound team, because the two disciplines share the same few square metres. A boom shadow on a guest's face or a cable crossing a lit desk is as much my problem as Tom's. This comparison draws on what I see from that shared position, with Tom's technical view behind it.
The aim is a plain recommendation, not a verdict that one method is right everywhere.
What a lavalier does well
A lavalier sits about twenty centimetres from the mouth, so it picks up a steady, close voice that barely changes when the presenter turns their head. For a news desk with two or three seated people, that consistency is a real comfort in the gallery. The sound engineer sets a level once and mostly leaves it alone.
It also keeps the ceiling clear. That matters for lighting, because a boom needs space above and in front of the talent, and that space is usually where key and fill lights want to be. With lavaliers, the lighting plan can be tighter and quicker to rig.
Lavaliers suit programmes where people stay put, where wardrobe is predictable and where the crew has time before transmission to check each one.
- Steady level when the presenter moves their head
- No boom shadow to design the lighting around
- Works well for seated desk formats
- Quick to reposition between segments
Where lavaliers let you down
Fabric is the enemy. A silk blouse, a stiff jacket lapel or a necklace brushing the capsule will all show up on air, and it is difficult to fix once the programme is live. Chest placement also adds a slightly boxy, hollow tone that some producers dislike for longer interviews.
There is a human cost as well. Someone has to fit each microphone, hide the cable, and manage battery changes on wireless packs. In a small crew, that someone is often also running something else. Guests who are nervous about being wired can feel it, and it shows in how they speak.
Radio interference is the last point to plan for. A venue with many wireless devices can make frequency choice a genuine task, so allow time for it in rehearsal rather than discovering it at the first live cue.
- Clothing rustle and jewellery noise
- Slightly boxy tone from chest position
- Fitting and battery management take crew time
The case for the overhead boom
A boom picks up the voice the way a listener in the room would hear it, with natural room tone and a fuller sound. For discussion shows, standing presenters, and anything where people gesture and move around the set, it gives a more alive result and frees guests from wearing equipment.
The price is skilled operation and careful lighting. A boom operator needs to see the action, stay out of frame and anticipate who speaks next. Lights need positioning so the pole casts no shadow, which narrows where Priya-style rigs can sit. Studios with low ceilings may find a boom close to unworkable.
Fixed overhead booms on a stand or hung from the grid reduce the staffing demand, but they only suit seating positions that do not change during a programme.
- Natural, fuller voice with room character
- Nothing worn by guests
- Needs a trained operator or a locked position
- Constrains lighting placement and ceiling height
A recommendation by programme type
For a seated news desk, use lavaliers and fit a spare on the desk for late arrivals. The consistency and the lighting freedom outweigh the small loss of warmth, and a short crew can manage it. Test every pack before rehearsal and keep fresh batteries labelled and to hand.
For a standing discussion or entertainment format with free movement, use booms, and give the operator a clear rehearsal so shadows and framing are settled early. If the crew cannot spare a dedicated operator, a fixed overhead position with guests seated is the safer choice.
For a mixed show, the strongest answer is both: lavaliers on the presenters, a boom for guests and ambience, each on its own fader. Redundancy costs a little extra setup time and saves a great deal of worry mid-programme.
- News desk: lavaliers, plus one spare
- Standing discussion: boom with a rehearsed operator
- Mixed show: lavaliers for hosts, boom for guests
Before you decide
Run a short test in your own studio rather than trusting a specification. Record the same presenter with each method, in the real room, under the real lights, then listen back on the gallery monitors. Differences that seem small on paper are obvious in that listening session.
Involve lighting and camera in the decision. A microphone choice changes where lights and lenses can go, and it is cheaper to discover that on a rehearsal afternoon than during transmission. Write the chosen layout on the rundown so every shift follows it.
This is the kind of choice our sound and audio workflow work helps studios settle, alongside mixing desk layout and talkback routing, with Tom leading the technical side.
Neither microphone wins outright. Lavaliers favour consistency and clean lighting; booms favour natural sound and freedom for guests. For most seated news formats, choose lavaliers with a spare. For movement and discussion, choose a boom with a rehearsed operator. Test in your own room, involve the lighting crew early, and write the decision down so every shift repeats it.