Case Study 1 — One Guitar, Five Placements, Five Instruments

A descriptive A/B walkthrough. The characters are this book's fictional regulars; the experiment is real, repeatable, and waiting in your room.

The Saturday after the blind test, Theo Park does the thing curious engineers have always done after a revelation: he tries to break it.

If placement could make a $99 dynamic beat a $1,000 condenser on Demi's voice, then placement should be able to do something stranger — make one microphone sound like five different microphones on one instrument. So he sets up his good condenser (the LDC he already owns; the rental went back Tuesday), puts it in cardioid, and asks Demi to play the same eight bars of the fingerpicked figure from their song "Hollow Moon" five times. Same guitar — her dreadnought. Same performance intensity; she's a machine about that. Same room: the spare bedroom, still untreated, duvet still hanging in its corner.

The only thing that changes between takes is where the microphone sits.

Theo logs each position in his Reaper session with the naming discipline he's been building since Chapter 6 — gtr_soundhole_3in, gtr_12fret_9in, and so on — records fifteen seconds of room tone after each take for honesty, level-matches the five takes on playback, and then hands Demi the headphones with the screen turned away. Her job: describe each take in the band vocabulary they've both been drilling since Chapter 4, and guess what changed.

Here's the position map, from above:

                       the spare bedroom (untreated)
   ┌────────────────────────────────────────────────────────┐
   │ window wall                                             │
   │                                                         │
   │                  ⑤ room shot                            │
   │                  (4 ft back, chest height)              │
   │                                                         │
   │        ② 12th fret        ① soundhole                  │
   │           (9 in)             (3 in)                     │
   │              \               /                          │
   │           ┌───────────────────┐                         │
   │           │  Demi + guitar    │   ④ over-the-shoulder   │
   │           │  (facing duvet    │      (by her right ear, │
   │           │   corner)         │       aimed down)       │
   │           └───────────────────┘                         │
   │        ③ behind the bridge (8 in)                       │
   │   duvet corner                              door        │
   └────────────────────────────────────────────────────────┘

Five positions, one mic, one guitar, one performance. The guitar faces the dead corner; the window wall gets nobody's on-axis path — Theo did read Chapter 7 first.

Take ① — The Soundhole Mistake (3 inches, dead-on)

This is where every beginner puts the mic, for a perfectly logical reason: the soundhole is where the sound seems to come out, and it's the loudest spot in front of the instrument. Loud reads as good — right up until the A/B.

Demi's verdict, eyes closed: "That's a guitar wearing a winter coat. Inside a duffel bag."

The band-vocabulary autopsy: the low-mids are bloated and woolly — the 200–400 Hz zone Chapter 4 taught you to call the mud zone is doing most of the talking. Below that there's a strange breathing quality, an almost rhythmic whoomp under her thumb-picked bass notes. The pick detail and string articulation she practices so hard are buried; the air band barely exists. It sounds, paradoxically, both bassier and smaller than the instrument in the room.

Two chapter mechanisms predicted all of it. First, the soundhole isn't a balanced output — it's the port of the guitar's resonating air cavity, the place where the body's boomiest behavior, down around the low end of the instrument's range, vents to the world. Aim there and you're recording the guitar's subwoofer. Second, three inches puts a cardioid deep into proximity-effect territory, stacking capsule bass on top of cavity boom. Boom times boom.

Theo's note in the session: every forum that says "my condenser sounds muddy on acoustic" is describing this placement, not their mic.

Take ② — The Classic (12th fret, 9 inches, tilted slightly toward the body)

The chapter's default position, the one the playbook recommends sight-unseen. The mic looks at the neck where it meets the body's upper bout, catching string detail directly while the body's warmth arrives at an angle.

Demi: "That's the record. That's what I think we sound like."

The autopsy: balance. The lows are present but trimmed — guitar-sized rather than truck-sized. The mids carry the woody fingerprint of her particular dreadnought. The high-mids deliver pick attack and fingertip articulation with the transient edges intact — the condenser's featherweight diaphragm earning its keep — and there's genuine air on top, the string shimmer that makes an acoustic sound expensive. The room is nearly absent: nine inches keeps the direct-to-room ratio high, and the duvet corner behind her gives the capsule's on-axis view nothing ugly to stare at past her shoulder.

Why it works, in chapter terms: the 12th fret area is roughly where the string's energy and the body's energy strike a truce. Height and aim choose a point in the instrument's harmonic recipe where no single ingredient bullies the blend. It is not magic; it is an average — which is exactly why it's the right starting position and not necessarily the right ending one. That's what the next three takes are for.

Take ③ — Behind the Bridge (8 inches, aimed at the body below the bridge)

Demi, frowning, interested: "Okay, that's not our song. That's a blues record. It got — knockier?"

The autopsy: midrange-forward and woody. The lows tighten; the air softens; what blooms instead is the 500 Hz–2 kHz body of the tone, plus a percussive component — the literal thump of string energy hitting the bridge and driving the top like a drumhead. Fingerpicking patterns turn rhythmic and physical; you hear the guitar as a wooden box being played, not a string section in miniature.

This is the height-and-aim dial at full effect: the bridge area is where the strings transfer their energy into the top, so the mic hears the engine room instead of the strings themselves. On a strummed rock track fighting for space with electric guitars, this take's punchy mids would survive a dense mix better than Take ②'s prettiness — a preview of an arrangement truth Chapter 16 will formalize: the best solo sound and the best mix sound are often different placements of the same instrument.

Take ④ — The Player's Ear (over the right shoulder, aimed down at the strings)

Theo got this idea from an old engineering trick: put the mic where the player's ear is, because that's the sound the player fell in love with.

Demi's reaction is the strangest of the night: "That one feels like being me. I don't know if I like it. It's so... private?"

The autopsy: intimate and slightly hollow. The balance tilts toward string noise — finger squeaks, the brush of skin on wound strings, the immediate snap of the pick — with the body's resonance arriving softer and less centered, because the mic is hearing the top of the guitar from above rather than facing it. There's a closeness that has nothing to do with proximity bass and everything to do with detail: tiny human sounds at the front of the capture. The low end is the leanest of the five takes.

What it's for: doubling. Layer this perspective quietly under Take ② and you get a wider, more touchable guitar without the phase complications of a true stereo pair — two genuinely different recipes of the same performance, not two copies. (The full multi-mic conversation, with its phase debts, is Chapter 12's business. Theo files the idea for the EP.)

Take ⑤ — The Room Shot (4 feet back, chest height of the seated player)

The chapter's distance ladder says that somewhere past arm's length, the room stops being a guest and becomes a co-star. The spare bedroom is about to audition.

Demi: "The guitar got further away and the room got loud. It sounds like a phone video of us. A nice phone video. But."

The autopsy: the direct sound is smaller and the space around it is suddenly audible — and the space is, to be honest the way this book is honest, not good. The untreated bedroom contributes a boxy halo in the low-mids, a flutter of brightness off the bare window wall, a general smearing of the transients that take ② kept crisp. In a great-sounding room, this distance is where magic lives — it's the placement philosophy behind the famous stairwell drum sound from Chapter 5, where the room was the instrument. In an untreated bedroom, it's a diagnostic: the take is a recording of the room, and the room just failed its audition.

Theo plays Take ⑤ twice and writes the most important note of the session: the room is the next project. He doesn't know yet that Chapter 10 will hand him a $250 plan for it — but he's now heard exactly why it matters, which is worth more than being told.

The Verdict Table

Demi's five descriptions, formalized:

One guitar. One mic. One performance, five times. Five instruments.

What This Proves — and What It Doesn't

The point is not that Take ② "won." On a different song — a stomping full-band arrangement, a hushed bedroom confessional — Demi might pick ③ or ④, and in a treated room ⑤ becomes a legitimate art direction. The point is that the spread between these five takes is enormous: bigger than the spread between most $100 and $1,000 microphones parked in the same spot, a claim you don't have to take on faith because the chapter's hook already ran that experiment and the exercises (Part C, the height experiment and the Theo test) let you run both yourself.

Placement is timbre. The position chooses which part of the instrument's harmonic recipe the capsule receives, how much room rides along, and what hits the pattern's good side. Five positions are five free microphones you already own.

And there's a workflow lesson hiding in Theo's session file. Because he named every take by its position, level-matched before comparing, and wrote the verdicts down, the night produced something better than a good guitar sound: it produced a map. When Wren & Hollow track their EP's guitars in Chapter 12, nobody will be guessing. The forty minutes of structured experimentation became permanent knowledge — which is the only gear acquisition in this book that never depreciates.

Run the experiment. Your guitar, your room, your five positions — or your voice, your kalimba, your roommate's accordion. The map you draw will be of your equipment in your space, which makes it worth more to you than this one. Theo would tell you the same thing, and then he'd make you guess blind.