Distorted electric guitar (rock and metal rhythm wall)

Role in the mix

In rock, punk, grunge, metal, metalcore and djent, distorted rhythm guitars are the wall: they occupy the mids from 100 Hz to 6 kHz, give the track its mass and define the genre. Distortion naturally compresses the sound (crest factor 6–10 dB) and generates a sea of harmonics: the problem is not dynamics but spectral density (mud at 200–400 Hz, fizz above 6–8 kHz, harshness at 2–5 kHz) and the conflict with bass, kick and vocals. The central rule: a big wall comes from multiple different performances that are well played and tight, panned wide, not from EQ and plugins.

Recording and choosing the sound

• Gain: less than you think. In tracking, the gain that sounds “huge” on its own turns into buzz and mud with the band: reduce it by 20–30%. The palm mute must stay defined.
• Tuning: standard (E2 82.4 Hz), drop D (D2 73.4 Hz), drop C (C2 65.4 Hz), 7-string (B1 61.7 Hz), 8-string (F#1 46.2 Hz). The lower the tuning, the more critical the HP and the relationship with the bass become.
• Mic: SM57 on the cone (position and angle are decisive; Andy Sneap on Judas Priest uses SM57 + Austrian Audio OC818 + sE VR2 ribbon for the cabinet, moving the mics by less than an inch for phase). The phase between the mics is essential.
• DI + re-amp / simulation: in FL Hardcore Guitar Effects (Distortion/Tubedrive + Cabinet) and Fruity Convolver for IRs; alternatives Neural DSP (Archetype, Fortin Nameless, Gojira), STL Tones, Bias FX, Line 6 Helix Native. In front of the high-gain amp, an overdrive (Tube Screamer: drive 0, level high, tone 50%) to tighten the lows and define the attack: this is standard in metal.
• Noise gate in front of the amp when tracking/re-amping (Fruity Limiter gate, ReaGate, ISOL8, Fortin Zuul).

Rhythm wall configurations (2–4 tracks)

• 2 tracks (not quad-tracking): one take at L 100%, one at R 100%. Different performances, same part. Standard in rock and metal (also Andy Sneap with Judas Priest: two similar but not identical setups L/R).
• 2 tracks with different amps: L = Mesa/Rectifier, R = 5150/EVH (or Marshall vs Mesa): same part, complementary timbres that fill the spectrum.
• 4 tracks (quad-tracking): two takes at L and two at R. The outer pair at 100% L/R with the main sound; the inner pair at 70–85% L/R with a different amp/IR, often 2–4 dB lower. A denser but less defined wall: it requires very precise performances (editing). Typical of modern metal and metalcore.
• 3 tracks: L 100%, R 100% + one in the center (or with a different amp at a low level) to fill the hole in the center of the mix without too much stuff in the center; watch out for the conflict with vocals and bass.
• Never duplicate a take and shift it by a few ms: that is a mono signal with comb filtering, not a stereo wall.
• Classic rock/punk: often 2 guitarists (different parts) + doubles: guitar 1 at L, guitar 2 at R; or the main rhythm part doubled + the second guitar tighter.

Gain staging and editing

• Peaks −12/−8 dBFS per track, guitar bus −8/−6 dBFS.
• Rhythmic editing (metal): align the takes to the grid or to each other (offsets of 10–20 ms between L and R make the band sound loose). Cut the noises in the pauses, fade the tails.

Corrective EQ

• HP 70–120 Hz (depending on the tuning: 80–90 Hz standard, 60–80 Hz for 7/8-strings, but let the bass work underneath). Often at 12 dB/oct so as not to lose the “chug”.
• LP 8–12 kHz: above that there is only fizz and noise.
• Mud 200–400 Hz: −2/−4 dB Q 1–1.5.
• Harshness 2–5 kHz: dynamic EQ (Pro-Q, Soothe2) on the amp/cone resonances, 2–4 dB on the peaks.
• Palm mute resonances 100–200 Hz: a dynamic band that acts only on the chugs (keeps the palm mute from bloating the low end).
• Fizz 6–9 kHz: −2/−3 dB if buzzy.

Creative EQ

• Body and “chug” 100–150 Hz: a small emphasis if the bass allows it (better to divide: bass at 60–100 Hz, guitars at 120–150 Hz).
• Bite and presence 1–2 kHz and 3–4 kHz: small boosts to make the riff stand out; CLA adds a lot of brightness at 8 kHz (6–8 dB on a console, in 1990s rock) and does not scoop the mids.
• Mid scoop (“scooped” 500–800 Hz): a 1980s/1990s thrash sound; in a modern mix it is a mistake, the mids are what make the guitar heard.

Compression

• Generally little or none: the distortion has already compressed.
• Light opto (LA-3A, 2–5 dB like CLA) or VCA on the guitar bus for cohesion (2:1, attack 20–30 ms, release 100–200 ms, 1–3 dB).
• Multiband on the 100–250 Hz band against chugs that bloat.

Transient shaper

Slight Attack + on the guitar bus in metal to make the palm mutes more “percussive”; Sustain − to tighten the pauses in djent and metalcore.

Saturation, distortion and clipper

• The sound is already distorted: more saturation only for color (tape on the bus to round off the fizz).
• Fuzz layer (Big Muff, Fuzz Factory) at a low level in stoner and doom.
• No clipper on guitars.

Delay

• Rhythm parts: almost never, or a very low delay (1/8 or 1/4, feedback 10–20%, mix 5–10%, filtered) for thickness in alternative rock.
• Effects on long notes and breaks.

Reverb

• Dry rhythm parts (CLA: no reverb on distorted guitars), or a very quiet short room (0.3–0.8 s) for depth. Andy Sneap uses a room mic for “space and air”.
• Long reverbs only on slow sections, let-ring chords, post-metal and shoegaze.

Modulation

Rare on rhythm parts. Chorus/flanger as an effect (grunge, shoegaze, some clean parts of metal). In shoegaze the wall is distortion + reverb + modulation (My Bloody Valentine).

Stereo and panning

• Hard L/R for the main rhythm parts; inner quad-tracks at 70–85%.
• Free center for vocal, kick, snare, bass.
• Low guitar bus correlation (0–0.5) if the doubles are real.
• Mono check: in mono the wall shrinks but must not disappear or change timbre (different takes sum without comb filtering).

Sidechain

• Dynamic EQ at 2–4 kHz on the guitars sidechained from the vocal (2–4 dB): the vocal gets through without lowering the wall.
• Dynamic EQ at 80–150 Hz sidechained from the kick (metal): every kick hit makes room in the chugs.
• Sidechain from the bass in the 100–200 Hz zone if bass and guitars mask each other.

Bass and guitars

In metal the bass often carries the low end (guitar HP at 90–120 Hz) and a distorted layer of the bass (above 400 Hz) blends with the guitars: the “wall” is guitars + upper bass. Align bass and guitars rhythmically.

Automation

• Wall volume −1/−2 dB under the vocal in the verses, full in the choruses and instrumental riffs.
• Progressive entrance (filters) in the intros.
• Extra doubles (quad) only in the choruses for contrast.

Differences by genre

Common mistakes

• Too much gain: lost definition, mud and buzz.
• Duplicated copy of the same take to make doubles.
• Takes out of time between L and R: a “dirty” wall.
• Guitars with no HP: they compete with bass and kick.
• Scooping the mids to get a “big” sound in solo: it disappears in the mix.
• Reverb on fast rhythm parts.