TONE LAB

Explore how every detail shapes your tone.

Then break the rules and make it yours.

Foundations

Core principles behind pickup tone.

Rule #1 — Be creative and enjoy the process.

You don’t need to master the theory. Follow the builder and its tooltips — everything is designed to guide you.

Tone doesn’t come from a single component.

It’s the interaction between magnetic field, coil behavior, and physical structure.

Core elements

Magnetic field captures string movement

Coil translates it into signal

Structure controls stability & behavior

Output ≠ Better

High output compressed, aggressive, less dynamic

Low output open, dynamic, more detail

Control

Small changes are not small. Every adjustment shifts feel, response and character.

Quick direction

More clarity → Coil
More punch → Magnet
More stability → Structure

This is where tone becomes something you can shape.

Not guess. Not chase. Shape.

Bobbins

Structure, spacing and materials.

The bobbin defines structure and alignment.

It controls spacing, fit and how the pickup interacts with your strings.

What it actually does

The bobbin holds the coil, defines string spacing and determines the physical dimensions of the pickup. It affects both installation and how accurately the magnetic field aligns with the strings.

Materials

Fibre (vintage style) traditional construction

classic look and feel
slightly softer structure
used in vintage-style pickups

Molded plastic modern standard (ABS / butyrate)

durable and consistent
tight tolerances
widely used in production pickups

3D printed (ASA) modern and highly customizable

excellent weather resistance
wide color options
high structural stability

3D printed bobbins

ASA is a durable modern material with excellent UV and weather resistance. It also allows a much wider range of visual customization compared to traditional pickup materials.

Advantages

excellent durability and stability
consistent manufacturing quality
wide range of color possibilities

This combines modern manufacturing with classic pickup design principles.

String spacing

Spacing determines how the pickup aligns with your strings. Incorrect spacing can lead to uneven response and volume differences.

Common spacing references

Neck → ~48–50 mm
Middle → ~50–52 mm
Bridge → ~52–54 mm

Always match spacing to your guitar’s bridge and string spread.

Single coil vs humbucker

Single coil bobbin one coil, direct string interaction, simple structure

Humbucker bobbin two coils, combined for noise cancelling and higher output

Things to consider

Fit and dimensions Pickup height and bobbin size must match your guitar cavity.

String alignment Proper spacing ensures even response across all strings.

Material choice Choose between vintage feel, modern durability or custom flexibility.

Takeaway

Want vintage style → Fibre
Want durability → Molded plastic
Want customization → 3D printed
Always match spacing → to your guitar

The bobbin defines how everything fits and aligns.

Precision here affects everything else.

Magnets

Magnetic field defines your signal.

The magnet doesn’t just affect tone.

It defines how your playing feels.

What it actually does

The magnetic field captures string movement and turns it into signal. Its strength, shape and material define attack, response and dynamics.

Two directions

Alnico soft field, organic response

warmer attack
more dynamic range
“breathes” with your playing

Ceramic strong field, focused response

faster attack
tighter low end
higher output

Feel difference

Alnico You control the sound

Ceramic The pickup pushes back

Magnet structure

Pole magnets direct string interaction, more articulation

Bar magnet shared field, smoother and more even response

AlNiCo grades

AlNiCo 2 (A2) Softer magnetic pull, warmer mids and sweeter highs. Often associated with vintage blues and smoother attack feel.

AlNiCo 3 (A3) Lowest magnetic pull of the common Strat-style magnets. Produces open dynamics, softer bass and airy vintage response.

AlNiCo 5 (A5) Strongest traditional Strat-style magnet. Tighter lows, brighter attack and increased output with more aggressive response.

Pole top shape

Flat (F) Flat pole top with the most direct and immediate magnetic response.

Vintage bevel (VB) Small vintage-style bevel for a slightly softer and rounder attack feel.

Modern bevel (MB) Larger bevel with a smoother magnetic transition and more refined response.

Does it change tone? The effect is subtle compared to magnet type or coil winding — but pole shape can slightly influence attack feel, pick response and perceived sharpness.

Flat poles Usually feel tighter, more focused and a little more immediate under the pick.

Beveled poles Tend to soften the edge of the attack slightly and can feel smoother or less aggressive.

Vintage bevels are inspired by old Fender-style finishing methods, while modern bevels are typically more consistent and polished.

Magnet dimensions

Magnet height Taller magnets usually create a stronger magnetic field and slightly higher output. Shorter magnets may feel softer and more open. 18mm is considered the most common modern Strat-style pole magnet height and works as a balanced all-purpose standard.

Magnet diameter Diameter changes the width and focus of the magnetic field. 5mm is the modern Strat-style standard used in most traditional single coil designs.

Polarity

North up vs south up doesn’t change tone alone — but it matters when combining pickups.

This is where phase relationships and hum cancellation come into play.

Things to consider

Magnet length & pickup height Longer magnets increase total pickup height. This can affect whether the pickup physically fits your guitar — especially in shallow cavities or vintage-spec bodies.

Magnet length & tone Longer magnets often create a stronger magnetic field and slightly higher output. They can feel more focused and punchy, while shorter magnets may sound softer and more open.

Staggered pole pieces Staggered poles are used to balance string output — especially on vintage Fender-style guitars where string radius and string gauges differ.

Why Strat pickups are staggered Originally designed for vintage string sets with a wound G string. The stagger compensates uneven volume between strings. With modern string sets, the effect may be different.

Flat pole pieces are often preferred with modern setups for more even response across all strings.

Uniform vs Individual configuration

Uniform mode All magnets use the same specification. This is the traditional and most common pickup construction method.

Individual mode Each pole magnet or slug can be configured separately for experimental magnetic balancing and fully custom stagger designs.

Steel slugs

In bar magnet pickups, the steel slugs transfer magnetic energy from the bar magnet to the strings.

Longer slugs Usually produce a slightly stronger and more focused magnetic response.

Shorter slugs May feel softer and slightly less aggressive.

Takeaway

Want feel and dynamics → Alnico
Want tightness and output → Ceramic
Want articulation → Pole magnets
Want smooth balance → Bar magnet

The magnet is where tone becomes feel.

Choose how your pickup responds to you.

Coil

Wire type, turns and response.

The coil defines your voice.

It shapes output, clarity and how your tone sits in the mix.

What it actually does

The coil converts string movement into electrical signal. Wire type, number of turns and winding pattern define output, frequency response and compression.

Output direction

Low wind open, clear, dynamic

more high-end detail
less compression
more headroom

High wind thicker, stronger, compressed

higher output
reduced highs
more mid focus

Feel difference

Low wind responds to your touch

High wind pushes the amp harder

Wire type

Solderable polyurethane balanced, clean and consistent

tight low end
clear top-end
modern response

Plain enamel smoother highs, vintage character

softer attack
warmer top-end
classic feel

Heavy formvar thicker insulation, fuller tone

slightly reduced highs
stronger midrange
rounder response

Insulation affects how tightly the coil packs — subtly changing capacitance, response and feel.

Mixed wires

You can combine different wire types.

This allows fine control over tone and response.

Why mix wires

blend clarity and warmth
shape midrange response
fine-tune attack and feel

What changes

coil density and structure
capacitance and frequency balance
overall responsiveness

Why there is a limit Too many wire transitions increase complexity in the coil and can reduce clarity. For this reason, mixing is limited to five changes — keeping the result controlled and musical.

Wire gauge (AWG)

42 AWG thicker wire, more open tone

lower resistance per turn
clearer highs
more dynamic response

43 AWG balanced, slightly hotter

more output than 42
smoother top-end
more mid presence

44 AWG thinner wire, higher output

higher resistance per turn
more compression
stronger mid focus

What it really changes

Thinner wire allows more turns in the same space. More turns increase output — but also shift the frequency response and reduce openness.

Winding approach

Every PAJA INSTRUMENTS pickup is scatter wound.

No uniform layers. No mechanical repetition. Just controlled variation.

Scatter wound The coil is wound with intentional irregularity. This creates a more complex electromagnetic response, resulting in a tone that feels more open, dynamic and alive.

richer harmonic content
less sterile high-end

Perfect consistency isn’t always the goal — musical response is.

DC resistance

Often used as a reference — but it doesn’t tell the full story. Two pickups with the same resistance can sound very different depending on wire type and winding.

Use it as a guideline, not a rule.

Winding direction

The coil can be wound clockwise or counterclockwise. On its own, this does not significantly change the tone — but it becomes critical when combining pickups.

Clockwise (CW) standard winding direction

Counterclockwise (CCW) reversed winding direction

Why it matters Winding direction affects phase and hum cancelling. Combined incorrectly, pickups can sound thin or out of phase.

Winding direction works together with magnet polarity — neither should be considered alone.

Things to consider

More turns ≠ better Increasing windings boosts output but reduces clarity and dynamics. It’s always a trade-off.

Balance with magnets A hot coil with a strong magnet can become too compressed. Balance between coil and magnet is key.

Application matters Clean tones benefit from lower windings, while high gain setups often prefer higher output coils.

Takeaway

Want clarity and dynamics → Lower wind
Want power and thickness → Higher wind
Want vintage feel → Plain enamel

The coil shapes how your tone speaks.

Choose how much it says — and how loud.

Cover

Materials, shielding and aesthetics.

The cover shapes protection, appearance and response.

It’s the outer layer — but not just cosmetic.

What it actually does

The cover protects the pickup and defines its visual identity. Depending on the material, it can also slightly influence high-end response and shielding.

Cover types

Molded plastic standard and practical

no tonal coloration
lightweight and durable
classic single coil look

Metal cover shielding and vintage character

can slightly reduce high-end
adds shielding
classic humbucker style

Custom / specialty unique materials and finishes

visual customization
non-standard designs
can affect response depending on material

3D printed covers (ASA)

3D printing allows full control over shape, structure and color. It enables designs that are not possible with traditional molded parts.

Advantages

wide color range
custom geometries
consistent fit and repeatability

Ideal for unique builds and visual matching with the rest of the instrument.

Tone impact

Plastic / open maximum clarity and no added filtering

Metal slightly smoother highs and more controlled response

The effect is subtle — but noticeable in sensitive setups.

Things to consider

Fit Covers must match pickup dimensions and mounting style.

Shielding Metal covers can help reduce interference in noisy environments.

Visual design The cover defines the final look — from vintage to fully custom.

Takeaway

Want clarity → Plastic / open
Want vintage tone → Metal
Want unique design → Custom / 3D printed

The cover finishes the pickup — visually and functionally.

Choose how it looks, and how it subtly responds.

Wax potting

Stability and microphonic control.

Wax potting controls stability.

It defines how much the pickup moves — and how much it reacts.

What it actually does

Wax potting fills air gaps inside the coil using molten paraffin wax. This stabilizes the internal structure and reduces unwanted movement.

Without potting, the coil and components can vibrate — creating microphonic behavior.

Potting levels

Unpotted completely open, maximum sensitivity

most dynamic and alive
can be microphonic
reacts to environment

Light potted controlled, but still open

reduced microphonics
keeps dynamics intact
balanced response

Full potted maximum stability and control

minimal microphonics
tight and focused
less “air” in response

Feel difference

Less potting more open, reactive and “alive” — but less controlled

More potting tighter, more stable and predictable — but less dynamic

Things to consider

High gain vs clean High gain setups usually require more potting to avoid feedback. Lower gain allows more openness.

Volume and stage conditions Loud environments increase the chance of microphonic feedback. Stability becomes more important.

Pickup construction More complex or loosely wound coils may benefit from additional stabilization.

Material

Paraffin wax is used to stabilize the coil without permanently altering its structure. It provides effective control while maintaining the natural tonal character of the pickup.

Takeaway

Want maximum openness → Unpotted
Want balance → Light potted
Want full control → Full potted

Wax potting defines how stable your tone is.

Choose between control — and openness.

Output wires and mounting hardware

How your pickup connects, fits and functions.

Output wires define how your pickup connects to the guitar.

Mounting hardware defines how it fits and adjusts.

Wire types

Cloth covered vintage style, easy to work with

no stripping needed
flexible and traditional
classic look

Standard PVC modern insulation, durable

more resistant to wear
clean and consistent
requires stripping

Wire length

Default length is 24 cm, but each wire can be customized depending on your guitar and routing.

Common reference lengths

Strat bridge → ~20–25 cm
Strat neck → ~30–35 cm
Tele bridge → ~20–25 cm
Les Paul bridge → ~25–30 cm
Les Paul neck → ~35–45 cm

Always consider routing paths — internal wiring length is not just straight distance.

Hot & Ground

Hot carries the signal from the pickup to the output

Ground completes the circuit and reduces noise

Correct grounding is essential for noise-free operation.

2 vs 4 conductor

2-conductor simple and traditional

hot + ground only
standard wiring
no coil splitting

4-conductor maximum flexibility

coil split / tap options
phase switching
series / parallel wiring

Choose 4-conductor if you want advanced wiring options — even if you don’t use them immediately.

Mounting screws

#6-32 (imperial) most common for US-made pickups and guitars

M3 (metric) common in European and Asian instruments

Always match screw type to pickup threads — they are not interchangeable.

Height adjustment

Rubber tubing smooth resistance, vintage style

stable over time
less rattling
traditional feel

Springs faster adjustment, more tension

quick height changes
stronger pushback
modern standard

Things to consider

Future-proofing Choosing 4-conductor wiring gives flexibility for future modifications.

Installation space Tight cavities may require careful wire routing and shorter lengths.

Compatibility Always match screws and mounting hardware to your guitar type.

Takeaway

Want simplicity → 2-conductor
Want flexibility → 4-conductor
Vintage feel → Cloth wire + tubing
Modern setup → PVC + springs

Fit, wiring and control define the final result.

Pickup height & setup

How pickup height affects output, feel and overall response.

Pickup height changes everything.

It affects output, clarity, dynamics and feel — more than most components.

What it actually does

Pickup height controls how strongly the magnetic field interacts with the strings. This directly affects output level, attack and sustain.

Height direction

Closer to strings stronger signal, more aggressive response

higher output
faster attack
more compression

Further from strings more open and dynamic

lower output
more clarity
more natural dynamics

Magnetic pull

If pickups are too close, the magnetic field can pull on the strings. This can reduce sustain and cause tuning instability.

Typical issue On Strat-style pickups, excessive height can cause a “warbling” or unstable note.

Balance adjustment

Bass side usually set slightly lower to avoid boominess and string pull

Treble side often slightly higher for clarity and definition

Starting points

Single coil (Strat-style) Neck: ~2.5–3.0 mm
Middle: ~2.0–2.5 mm
Bridge: ~1.5–2.0 mm

Humbucker Neck: ~2.0–2.5 mm
Bridge: ~1.5–2.0 mm

Measurements are taken from the string to the pole piece while fretting the last fret.

Interaction with design

Pickup height works together with magnets and coil. A strong magnet or high-output coil may require more distance to stay clear and dynamic.

Things to consider

Output balance Adjust height to match volume between pickups — unless you’re designing for it.

Playing style Heavier attack may require slightly lower pickups to maintain clarity.

Fine tuning Small adjustments can make a big difference — use your ears.

Takeaway

Closer → more output, more compression
Further → more clarity, more dynamics
Balance both sides → even response
Always fine-tune → by ear

This is where your pickup comes to life.

Set it right — and everything else makes sense.

Combining pickups

How pickups interact, cancel noise and work together.

Pickups don’t exist in isolation.

When combined, they interact — shaping tone, phase and noise behavior.

What changes when combining pickups

When two or more pickups are active, their signals interact. This affects output, frequency response, phase and noise cancellation.

Phase

In phase full, balanced sound

Out of phase thin, hollow and nasal

Phase depends on both winding direction and magnet polarity.

Hum cancelling (RWRP)

Noise is cancelled when two pickups have:

opposite winding direction
opposite magnetic polarity

This is known as Reverse Wound, Reverse Polarity (RWRP).

Typical example

Stratocaster The middle pickup is usually RWRP, creating hum-cancelling positions in 2 and 4.

Humbucker principle

A humbucker uses two coils with opposite winding and polarity to cancel noise while keeping a full signal.

Series higher output, thicker tone

Parallel cleaner, lower output

Coil split

One coil is turned off, leaving a single coil active. This gives a brighter, more open tone — but removes hum cancelling.

Dummy coil

A dummy coil cancels noise without acting as a full pickup. It allows single coil tone with reduced hum — but always with some tonal impact.

How it works The dummy coil is wound and connected to cancel hum, but balanced so it contributes as little signal as possible.

Coil balance One coil carries the main signal, while the second coil is reduced to act mainly as a noise canceller.

Example (humbucker-style) The main coil may have around 7,000–8,500 turns, while the dummy coil can have significantly fewer — typically around 2,000–4,000 turns.

The goal is balance: enough winding to cancel hum, but not enough to dominate the tone.

Things to consider

Mixing pickups Output levels should be balanced to avoid one pickup overpowering another — unless you’re designing for it.

Compatibility Incorrect combinations can lead to phase issues or unwanted noise.

same winding + same polarity → no hum cancelling
opposite winding but same polarity → out-of-phase sound

Future flexibility 4-conductor wiring allows advanced switching options later.

Takeaway

Want full sound → keep pickups in phase
Want noise reduction → use RWRP
Want flexibility → use 4-conductor wiring
Want hum-free single coil feel → use humbucker or dummy coil

Great tone isn’t just one pickup.

It’s how they work together.

tone-lab

TONE LAB

Foundations

Bobbins

Magnets

Coil

Cover

Wax potting

Output wires and mounting hardware

Pickup height & setup

Combining pickups