How to Mix Live Sound: A Complete Beginner's Guide for the FOH Position

Live sound mixing and studio mixing share the same underlying audio principles, but the workflows, priorities, and constraints are dramatically different. A studio mix is a single recording you can iterate on for hours or days; a live mix is happening once, in real-time, with no opportunity to undo. This guide covers the fundamentals of front-of-house (FOH) live sound mixing for beginners, the role responsible for the audience's experience.

The FOH position is mixing for the audience, not for the band. The band hears their own monitor mixes (in-ear or wedges); FOH hears the room. Your job is to make the band sound as good as possible to the audience, balancing instruments and vocals through the main speakers. The audience's experience is the only thing that matters.

Soundcheck workflow. Start with input gain. Work through every input (kick, snare, toms, overheads, hi-hat, bass DI, guitar mics, vocal mics, keyboards) and set the gain so that the loudest part of each input peaks around -6 dBFS at the console. Too low and you'll be fighting noise; too high and you'll clip the input. Get gains right before touching any EQ or compression.

Then ring out monitors. Each musician's monitor mix needs to be loud enough for them to hear themselves on stage without feeding back. Walk to each monitor wedge, push up the channel slowly, and pull back at the first sign of feedback. Use the graphic EQ on the monitor send to notch out the problematic frequencies. This is "ringing out" the monitors, and it is the single most-skipped step that ruins live shows.

Then build the FOH mix. Start with the kick and bass. Get them sitting together. Add the snare. Add overheads. Add bass guitar (DI is preferable to mic for live in most situations). Add other instruments one at a time. Add vocals last, vocals are the most important element and you want them sitting on top of a complete instrumental bed.

Gain structure throughout the signal chain. Input gain → channel fader → bus → output. At each stage, you want the signal hitting around -6 dBFS, not clipping and not so low you have to push downstream gain. The most common live sound problem is gain structure issues compounding through the chain, clipping at the input that becomes audibly distorted at the output.

Live EQ moves are more aggressive than studio EQ. The room is fighting you, the PA system has its own resonances, and the bleed between mics is constant. High-pass everything aggressively (vocals at 120 Hz, snare at 200 Hz, hi-hat at 500 Hz). Cut more boldly, a 6 dB cut is normal in live sound where it would be heavy-handed in the studio.

Monitor wedges vs in-ears. Wedges are loud, exposed to the audience, and create constant feedback risk. In-ears are quieter on stage, isolate each musician's mix, and dramatically reduce feedback risk. Most modern touring acts use in-ears; bar bands and small clubs still use wedges. The mixing approach for each is different, in-ear mixes can be much more detailed and dynamic; wedge mixes have to be louder, simpler, and more conservative on the high end.

Feedback frequencies. The frequencies that feed back depend on the room, the speakers, the microphones, and the monitor positions. Common feedback frequencies: 250 Hz (small rooms), 800 Hz to 1 kHz (vocal mics), 2 to 4 kHz (snare and hi-hat mics), 8 to 12 kHz (room overhead reflections). Learn to identify feedback frequencies by ear, when you hear a building tone, you should be able to grab the right EQ slider within 2 to 3 seconds.

Compression in live sound is conservative. A modest amount of vocal compression (3:1 ratio, slow attack, 3 to 4 dB of gain reduction) keeps the vocal sitting consistently. Bass compression (2:1, 2 to 3 dB) keeps the low end consistent. Avoid heavy compression on drums in live sound, it is harder to recover from a bad-sounding live snare than from a slightly-uncompressed one.

Reverb and delay in live sound are minimal. The room itself adds natural reverb. Adding more from the console can muddy the mix, especially in small rooms. A short plate (1 to 1.5 seconds) on the lead vocal at very low send level is usually all you need. In acoustically dead rooms (large theaters, outdoor stages) you can use more reverb and delay.

Common mistakes: forgetting to ring out monitors (feedback during the show), not setting gain structure (compounding distortion), over-mixing during the first song (the band hasn't settled, the room hasn't filled in yet, do the minimum during song one and adjust during songs two and three), too much reverb (mud), making the vocal too loud (the vocal should be on top, but the band should still be present underneath), no high-pass filters (mud everywhere).