How to Mix Acoustic Guitar: Boom, Pick Attack and Width

Why is acoustic guitar hard to mix?

Acoustic guitar is hard to mix because the three things that make it sound good alone, low-end body, bright pick attack and room around the instrument, are the same three things that crowd a beat. A close-miked acoustic can sound huge soloed and still turn into boom and clatter once drums, bass and a vocal arrive.

Start by naming the guitar's job. A strummed rhythm part is a texture that should sit back and wide. A fingerpicked riff or intro is a lead line that needs definition and a place in the center. Most of the decisions below change depending on which one you have.

Many problems start at recording. If you still control the session, the guide to recording acoustic guitar for pop and R&B beats covers placement choices that save you from heavy EQ later.

How do you get rid of boom on acoustic guitar?

Remove acoustic guitar boom with a high-pass filter around 80-120 Hz and a cut, often dynamic, somewhere between 100 and 250 Hz. The boom has two usual sources: the microphone and the guitar body.

The microphone source is proximity effect. Shure explains that directional microphones increase bass as they move closer to the source, and that the fix is either backing the mic away or rolling off bass with EQ^[1]. DPA notes that pointing a mic at or near the sound hole gives more volume, while the spot between fretboard and sound hole is the usual starting point^[2]. A close mic aimed at the hole therefore adds both extra level and extra low end.

The body source is the air cavity. HyperPhysics places the main air resonance of an acoustic guitar somewhere between F#2 (87 Hz) and A2 (110 Hz), depending on the instrument, with a coupled plate resonance about an octave above^[3]. That is why a boomy acoustic often has one note that jumps out when chords land on it.

1. Set the high-pass
   Start at 80 Hz with 12-18 dB/oct and raise it with the full mix playing. Strummed parts under a vocal can go as high as 150-200 Hz.
2. Find the resonant note
   Sweep a narrow boost between 80 and 250 Hz. The boom usually shows up as one or two notes that ring louder than the rest.
3. Cut it dynamically
   Use a dynamic EQ band at that frequency, reducing 3-6 dB only when the note rings. A static cut that deep would thin every other chord.
4. Check against the bass
   Solo the guitar with the bass or 808. Whatever low end remains should support the chord, not double the bass line.

Acoustic guitar EQ frequencies at a glance

Use these zones as search areas while sweeping. Every guitar, string set and mic changes the exact spot, so small moves after careful listening beat big moves from a preset.

How do you control pick attack on acoustic guitar?

Control pick attack with a transient shaper or compressor attack time first, and EQ second. The pick click is a timing event, so an envelope tool fixes it without dulling the sustained notes.

Logic Pro's stock Enveloper is a good example. Apple states that boosting its attack phase can amplify the initial pluck or pick sound of a stringed instrument, and attenuating attack makes the signal fade in more softly^[4]. Pull attack down 10-20% on a clacky strummed part; push it up on a dull fingerpicked line that needs to speak.

• Too clicky Reduce transient attack, use a faster compressor attack of 1-5 ms, or put a de-esser on the 2-5 kHz range with a fast release to catch only the picks.
• Too dull Boost transient attack, slow the compressor attack to 20-30 ms, and add a wide 1-2 dB lift around 3-5 kHz.
• Fret squeaks Edit them out or clip-gain them down by hand. Compression only makes squeaks louder between notes.

What compression settings work on acoustic guitar?

Acoustic guitar usually wants gentle compression, 2-5 dB of gain reduction at 2:1-4:1, with the attack set to keep or soften the pick depending on the part. Ableton's manual notes that an attack of 10-50 ms lets peaks through unprocessed, while very short attacks take the life out of a signal^[5].

Two stages often beat one: a fast, light compressor catches the loudest strums, and a slower one after it smooths the overall level. Each should do only 2-3 dB.

How do you make acoustic guitar wide?

The most reliable width comes from double tracking: record the same part twice and pan the takes left and right. The small timing and tone differences between two real performances create width that holds up in mono.

Copying one take and delaying it is the shortcut, and it has a cost. Sound On Sound's Matt Houghton answered a reader whose Haas-widened guitars nearly disappeared in mono, explaining that such parts vanish or change tone when summed because of phase cancellation, and recommending double tracking, reverb or Mid/Side widening for important parts^[6].

• Double-tracked strums Pan the takes 70-100% left and right. Keep the vocal and kick in the center gap.
• Different voicing on the double Play the second take with a capo higher or in open-string inversions. It widens and thins the low end at once.
• Single take with stereo mics Pan a spaced pair partway, around 40-60%, and check mono for a hollow sound.
• Single mono take Pan it off center opposite another instrument and let a stereo reverb supply the space.

If you cannot re-record, a short delay on a quiet copy is acceptable for background texture, but keep the main take intact. The article on track delay for width covers safe timing ranges.

What reverb suits acoustic guitar?

A small room or a short plate on a send suits most acoustic guitars in modern productions, with a decay of about 0.8-1.5 seconds and 15-30 ms of pre-delay. The guitar already carries some room from the recording, so add just enough to match it to the vocal's space.

High-pass the return at 200-300 Hz, since reverb on the body resonance is a fast route back to boom. For a close, intimate sound in lo-fi and bedroom pop, skip reverb and use a very short slap delay instead. For ballads, a longer hall on the guitar only, pushed back behind a drier vocal, creates depth without blurring the lyric.

How do you sit acoustic guitar under a vocal?

Let the vocal own the center and the 2-5 kHz presence range, and give the guitar the sides and the midrange body. A guitar that fights the vocal is almost always too bright, too centered or too loud in the presence band.

1. Pan away from center
   Move double tracks wide or a single take off center so the vocal has a clear middle.
2. Dip the shared band
   Put a dynamic EQ band on the guitar at the vocal's presence frequency and key it from the vocal so it dips 2-3 dB only while the singer is active.
3. Ride the level
   Automate the guitar up 1-3 dB in gaps between vocal lines and back down under the lyrics.
4. Set depth
   Give the guitar slightly more reverb than the vocal so it sits behind it.
5. Check the whole picture
   Listen in mono at low volume. If the guitar disappears, reduce the width; if it still masks the lyric, lower its presence further. The explainer on masking helps when the clash is hard to locate.

When the song also has electric parts, give each guitar type its own range and side; mixing electric guitar covers the other half of that balance.