Module 3.4 · Tools Track · EQ
EQ Moves Per Instrument
The synthesis. Subtractive plus additive, applied to every instrument family — concrete recipes you'll reach for hundreds of times before your ear takes over.
You now have both EQ modes in your hands. Module 3.2 taught you to cut what's in the way — high-pass filters, mud-zone clearing, surgical notches. Module 3.3 taught you to add what's missing — weight, warmth, presence, air. This module brings them together. What does a vocal actually need? A kick? A bass? An acoustic guitar? Below: the concrete moves, instrument by instrument.
None of these recipes are rules. They're starting points — the moves working engineers reach for first when they hear a particular kind of problem on a particular kind of source. Every recording is different: the room, the mic, the player, the song key, the production style. Use these recipes as a launchpad, then adjust by ear and by what the mix actually needs.
One concept first — the most important EQ idea after the tools themselves: tracks don't sound right or wrong in isolation. They sound right or wrong in context. A vocal that's perfectly EQ'd in solo will often sound completely different against a full mix. The recipes below assume you're listening in context, with the mix playing.
⛓ Where this sits in the signal chain
The recipes below assume the standard processing order: HPF / subtractive cleanup → compression → additive shaping → bus EQ. The "cut" moves listed for each instrument typically happen pre-compression (Module 3.2 territory). The "boost" moves typically happen post-compression (Module 3.3 territory). If you're applying these to a track that hasn't been compressed yet, the boosts may amplify peaks the compressor would have controlled — set up your compressor first (Module 4.1), then come back to additive moves.
First, the words
Four ideas that turn EQ from "trying recipes" into "thinking about the mix." Get these in your bones and the per-instrument moves below become tools, not rules.
Concept 1
The mix-context principle
Tracks sound right or wrong only in the context of the full mix — never solo.
Think of it like the color of a paint chip in a hardware store vs. on your bedroom wall.
A paint chip looks one color under store lighting, in your hand, on the swatch card. The same paint, brushed on your bedroom wall, looks entirely different — because the surrounding colors, the ambient light, and the wall texture all change how your eye perceives it. Audio works the same way. A vocal soloed has no other tracks competing with it — the EQ moves you hear in solo aren't the moves the vocal needs in context. EQ in context, not in solo. Working engineers solo a track briefly to find a specific problem (a click, a buzz, a resonance), but they make the actual EQ decisions with the full mix playing. The recipes in this module are the moves engineers reach for after hearing a problem in context — not generic tweaks applied indiscriminately.
Concept 2
The frequency conflict
When two tracks live in the same frequency band, they fight — and listeners can't hear either one clearly.
Think of it like two people trying to talk to you at once.
If two people speak at exactly the same volume and pitch, you can't follow either of them. Their voices mask each other — every word from one obscures words from the other. Tracks in a mix do the same thing. The kick and bass both occupy 60–120 Hz. The vocal and the lead guitar both occupy 1–4 kHz. The cymbals and the vocal sibilance both occupy 6–8 kHz. When they overlap, listeners hear neither one clearly. The cure isn't to turn one down or boost the other — it's to separate them in frequency. Carve a notch in track A where track B lives, and suddenly track B has its own home and stands out. This is the single most important pro-mixing concept beyond the tools themselves.
Concept 3
The complementary cut
Cut frequency X on track A so frequency X on track B has space to be heard.
Think of it like making room on a shelf by removing one book to fit another.
If you want the lead vocal to "sit on top" of the mix, the most effective EQ move usually isn't on the vocal — it's on the tracks competing with it. Cut 3 kHz on the rhythm guitars by 2 dB and the vocal at 3 kHz suddenly has room to be heard. The vocal didn't change at all — but the space around it did. This is called complementary EQ: the cut on one track exists specifically to make room for what's on another. Working engineers think this way constantly: "the kick isn't punchy enough" → cut 60 Hz on the bass; "the snare isn't snapping" → cut 5 kHz on the cymbals; "the vocal is buried" → cut 2–4 kHz on the guitars. Complementary EQ is how separation gets engineered into a mix.
Concept 4
The reference track
A polished commercial recording you compare against to calibrate your ears and your decisions.
Think of it like a tuning fork for your mixing decisions.
A tuning fork doesn't make music — it gives you a precise reference to tune against. A reference track does the same for mixing. Pick a commercial recording in a similar style and load it into your DAW alongside your mix. Loudness-match them (so the reference and your mix play at the same perceived volume — Module 1.5). Toggle between the two as you EQ. Does your kick sound thin compared to the reference? More 60 Hz weight. Does your vocal feel buried? Listen to where the reference vocal sits and compare. Reference tracks calibrate your ears against "what good sounds like" in real time. Working mastering and mixing engineers use them on every session. Pick 2–3 references per song; switch between them to avoid copying any single one.
The diagram below shows the most common frequency conflicts in pop, worship, and rock mixes. Each pair of instruments overlaps in a specific band — and that's where complementary EQ unlocks separation. Find your mix's conflicts here, then apply the per-instrument recipes that follow.
Four conflicts cover most mixing decisions: kick vs. bass in the low-end, snare body vs. vocal warmth in the mud zone, vocal vs. guitar in the presence band, and hi-hat vs. sibilance in the upper highs. The recipes below give specific moves for each conflict.
Per-instrument recipes
Working starting points for the most common sources. Cut moves typically happen pre-compression (Module 3.2 territory); boost moves typically happen post-compression (Module 3.3 territory). Always A/B against bypass; always listen in mix context.
Lead vocal
| Move | Frequency | Type / Q | Amount | Why |
|---|---|---|---|---|
| HPF | 80–120 Hz | 12 dB/oct | cut | removes mic rumble, AC hum, breath wind |
| Mud cut | 250–400 Hz | narrow bell, Q 3 | −2 to −4 dB | find the boxy resonance, notch it |
| Honk cut | 800 Hz–1 kHz | narrow bell, Q 4 | −1 to −3 dB | removes "telephone" mid-range buildup |
| Body | 150–250 Hz | wide bell, Q 1 | +1 to +2 dB | warmth — careful in the mud zone |
| Presence | 3–5 kHz | medium bell, Q 1 | +2 to +3 dB | the vocal sits on top of the mix |
| Air | 10–14 kHz | high shelf | +1 to +3 dB | polish, sheen, "expensive" feel |
| De-ess | 5–8 kHz | narrow bell, Q 4 | −2 to −6 dB (dynamic) | reduce sibilance — better with a dedicated de-esser |
Backing vocals
| Move | Frequency | Type / Q | Amount | Why |
|---|---|---|---|---|
| HPF | 150–250 Hz | 12 dB/oct | cut | backing vox don't need low-end — clears space for lead |
| Presence cut | 3–5 kHz | medium bell, Q 1 | −1 to −3 dB | complementary cut for the lead vocal's presence |
| Air | 10–14 kHz | high shelf | +1 to +3 dB | helps backings spread wide and feel "sparkly" |
Kick drum
| Move | Frequency | Type / Q | Amount | Why |
|---|---|---|---|---|
| Subsonic HPF | 20–30 Hz | 12 dB/oct | cut | removes inaudible rumble; preserves all kick body |
| Boxy cut | 300–500 Hz | narrow bell, Q 3 | −2 to −5 dB | removes "cardboard box" cardboard quality |
| Sub weight | 50–60 Hz | low shelf or wide bell | +1 to +3 dB | gives the kick fullness in the low-end |
| Body | 80–120 Hz | wide bell, Q 1 | +1 to +2 dB | thickens the body without booming |
| Beater click | 3–5 kHz | medium bell, Q 1 | +2 to +4 dB | adds the beater attack so the kick cuts through |
Snare drum
| Move | Frequency | Type / Q | Amount | Why |
|---|---|---|---|---|
| HPF | 80–120 Hz | 12 dB/oct | cut | removes kick bleed and rumble |
| Box cut | 400–600 Hz | narrow bell, Q 3 | −2 to −5 dB | removes "ringy" snare body resonance |
| Body / fullness | 180–250 Hz | wide bell, Q 1 | +1 to +2 dB | fattens snare without making it muddy |
| Snap / attack | 5 kHz | medium bell, Q 1 | +2 to +4 dB | cuts through the mix; the "crack" |
| Air / room | 10–12 kHz | high shelf | +1 to +2 dB | opens up the snare in the mix |
Hi-hats / cymbals / overheads
| Move | Frequency | Type / Q | Amount | Why |
|---|---|---|---|---|
| HPF | 250–500 Hz | 12 dB/oct | cut | cymbals don't need low-mids; clears space |
| Harshness cut | 5–8 kHz | narrow bell, Q 3 | −1 to −3 dB | tames the metallic "ice pick" frequency |
| Stick attack | 3–5 kHz | medium bell | +1 to +2 dB | defines the attack of each hit |
| Sparkle | 10–14 kHz | high shelf | +1 to +3 dB | shimmer, dimension, top-end |
Toms
| Move | Frequency | Type / Q | Amount | Why |
|---|---|---|---|---|
| HPF | 60–80 Hz | 12 dB/oct | cut | cuts kick bleed and stand vibration |
| Ring cut | 300–500 Hz | narrow bell, Q 4 | −3 to −6 dB | removes the "ringy" overtone |
| Body | 80–150 Hz (floor) or 150–250 Hz (rack) | wide bell, Q 1 | +1 to +2 dB | thickens the tom |
| Attack | 3–5 kHz | medium bell | +1 to +3 dB | defines the stick attack |
Bass (DI or amp)
| Move | Frequency | Type / Q | Amount | Why |
|---|---|---|---|---|
| Subsonic HPF | 30–40 Hz | 12 dB/oct | cut | removes rumble; preserves musical low-end |
| Mud cut | 200–400 Hz | narrow bell, Q 2 | −1 to −3 dB | clears the bass out of the vocal/guitar mud zone |
| Sub weight | 60–80 Hz | low shelf or wide bell | +1 to +3 dB | fullness — careful with kick conflict |
| Pluck / definition | 700 Hz–1.2 kHz | medium bell | +1 to +2 dB | gives the bass note definition on small speakers |
| String / attack | 2.5–4 kHz | medium bell | +1 to +2 dB | pick attack, finger noise — helps the bass cut |
Acoustic guitar
| Move | Frequency | Type / Q | Amount | Why |
|---|---|---|---|---|
| HPF | 100–150 Hz | 12 dB/oct | cut | in band mix; clears bass space |
| Boom cut | 200–250 Hz | medium bell, Q 2 | −2 to −4 dB | removes soundhole boom |
| Honk cut | 700 Hz–1 kHz | narrow bell, Q 4 | −1 to −3 dB | removes "honky" mid resonance |
| Body / fullness | 120–200 Hz | wide bell, Q 1 | +1 to +2 dB | warmth without boom |
| String detail | 4–6 kHz | medium bell | +1 to +2 dB | pick attack, articulation |
| Shimmer | 10–14 kHz | high shelf | +1 to +2 dB | top-end sparkle |
Electric guitar (clean)
| Move | Frequency | Type / Q | Amount | Why |
|---|---|---|---|---|
| HPF | 80–120 Hz | 12 dB/oct | cut | removes amp/cab low-end |
| Mud cut | 200–400 Hz | narrow bell, Q 3 | −2 to −4 dB | find and notch boxy resonance |
| Vocal cut | 3–4 kHz | wide bell, Q 1 | −1 to −2 dB | complementary cut to make room for the lead vocal |
| Bite | 2.5–4 kHz | medium bell | +1 to +2 dB (lead) / 0 (rhythm) | cuts through (apply to lead, not rhythm) |
| Sparkle | 6–10 kHz | high shelf | +1 to +2 dB | edge for clean tones |
Electric guitar (distorted)
| Move | Frequency | Type / Q | Amount | Why |
|---|---|---|---|---|
| HPF | 120–180 Hz | 12 dB/oct | cut | distorted guitars have fizzy low-mids that cloud the bass |
| Fizz cut | 3–4 kHz | narrow bell, Q 3 | −2 to −4 dB | removes "fizz" or "pick scratch" buildup |
| Vocal cut | 2–4 kHz | wide bell, Q 1 | −1 to −3 dB | complementary cut for the lead vocal |
| Body | 200–400 Hz | wide bell, Q 0.7 | +1 dB only | only if the guitar feels thin (mud zone risk) |
| Bite (lead only) | 2.5 kHz | medium bell | +2 dB on lead | only for solo / lead lines |
Piano / acoustic keys
| Move | Frequency | Type / Q | Amount | Why |
|---|---|---|---|---|
| HPF (in band) | 100–200 Hz | 12 dB/oct | cut | removes lower octaves competing with bass |
| Boom cut | 200–400 Hz | medium bell, Q 2 | −1 to −2 dB | tames lower midrange boom |
| Warmth | 200–400 Hz | wide bell, Q 1 | +1 dB max | only for solo piano (mud zone risk in band) |
| Presence | 3–5 kHz | medium bell | +1 to +2 dB | note attack and clarity |
| Air / dimension | 10–12 kHz | high shelf | +1 to +2 dB | top-end shimmer |
Synth pads
| Move | Frequency | Type / Q | Amount | Why |
|---|---|---|---|---|
| HPF aggressive | 200–300 Hz | 12 dB/oct | cut | pads spread everywhere; HPF keeps them in the upper register |
| Vocal cut | 2–4 kHz | wide bell, Q 1 | −2 to −3 dB | pads and vocals fight; cut the pad to make room |
| Air / spread | 8–12 kHz | high shelf | +1 to +3 dB | pads sit better with extended top-end |
| Movement | 1–2 kHz | medium bell | +1 dB | adds interest without conflicting with the vocal |
Synth lead / arp / pluck
| Move | Frequency | Type / Q | Amount | Why |
|---|---|---|---|---|
| HPF | 120–200 Hz | 12 dB/oct | cut | removes low-end mush from layered synth oscillators |
| Fizz cut | 3–5 kHz | narrow bell, Q 3 | −1 to −3 dB | tames sawtooth fizz buildup |
| Cut-through | 2–4 kHz | medium bell | +1 to +2 dB | helps lead synths cut through; replace if cutting |
| Sparkle | 8–12 kHz | high shelf | +1 to +2 dB | top-end definition |
Strings / horns
| Move | Frequency | Type / Q | Amount | Why |
|---|---|---|---|---|
| HPF | 100–200 Hz | 12 dB/oct | cut | orchestral elements rarely need sub-bass in a pop mix |
| Honk cut | 500 Hz–1 kHz | narrow bell, Q 3 | −1 to −3 dB | tames "nasal" string section resonance |
| Warmth | 200–300 Hz | wide bell, Q 1 | +1 dB | fullness without mud |
| Bow / breath | 3–5 kHz | medium bell | +1 to +2 dB | adds bow attack on strings, breath on horns |
| Air | 10–12 kHz | high shelf | +1 to +2 dB | orchestral dimension |
"The best EQ moves don't make a track sound 'EQ'd.' They make a mix sound right. If your tracks all sound great in solo and your mix sounds congested, your EQ is wrong. Listen in context." — FTM, on context-driven EQ
The complementary EQ technique — vocal-up mixing
The single most-used pro mixing move is making space for the vocal by cutting other tracks. It works in three steps:
- Find the vocal's "money frequency." Sweep a +6 dB bell across the vocal from 1.5 kHz to 5 kHz with the full mix playing. Find where the vocal sounds most present, most "in front." Note the frequency — say 3.2 kHz.
- Cut that frequency on competing tracks. On every track that's likely fighting the vocal at that band — rhythm guitars, lead synths, busy keys — cut 1–3 dB at the vocal's money frequency, with a wide Q (1.0).
- Listen back. The vocal now occupies a band other tracks have politely vacated. Result: the vocal sits clearly without you having boosted it. The mix sounds open, not crowded.
Apply the same logic for any other "lead" element — a lead guitar that's getting buried, a saxophone solo, a featured synth line. Find its money frequency; cut competing tracks at that band.
Translation — making sure your EQ choices work everywhere
A mix that sounds great on your monitors but bad in a car or on phone speakers is a mix that hasn't translated. EQ decisions are a major translation factor. The ways to make EQ translate:
- Mix at moderate levels (75 dB SPL). Loud monitoring makes you under-EQ low and high; quiet monitoring makes you over-EQ them (Module 2.1, Fletcher-Munson).
- Reference commercial tracks frequently. Loudness-matched A/B comparisons calibrate your tonal sense.
- Check on multiple speaker systems. Phone speaker, laptop, car, headphones, monitors. Each reveals different EQ problems.
- Use a mono check. Sum the mix to mono on a single speaker. Phase issues, balance issues, and EQ buildup all become more obvious.
- Don't trust visual feedback alone. A spectrum analyzer can confirm what's there, but the ear decides what works.
Tools · Module 3 (EQ) complete
You've finished the EQ track
Foundations, subtractive, additive, and per-instrument recipes — every EQ move you'll use in 95% of mixes. From here, the next step in the signal chain is compression (Module 4) — controlling dynamics, shaping transients, gluing elements together. Compression sits between subtractive and additive EQ in your channel chain, and pairs with EQ in every mix you'll ever do.
Next up · Module 4.2
Parallel & Sidechain Compression — the advanced compression techniques