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TR042603-XG4N7

TESTI PICKUP
SINGLE COIL / P90
UNIT ID: TR042603-XG4N7
BUILT: May 1, 2026

Sound Profile ?

Medium-low to medium output with a dynamic, touch-sensitive response rather than strong amp-driving power.
Bass 5.5
Mids 6.5
Treble 7.5
Pickup Character

A vintage-voiced single coil with a warm, smooth character and airy top end. It has a soft attack, slightly forward upper mids, and a rounded, musical high end rather than sharp bite. The Alnico 2 magnets give it a sweet, compressed feel with excellent touch sensitivity. Overall, it leans more toward “sweet and expressive” than “aggressive and punchy”, making it very responsive to dynamics and picking nuance.

Electrical Profile ?

Core Parameters
DCR 6,78
Inductance 2,02 H
Capacitance 116 pF
"> Resonance Behavior
f₀ Peak Q
No Load 4,55 -22,91 3,9
500k 4,578 -28,83 2,8
250k 4,57 -28,69 2,3

Magnetic Field ?

Polarity North UP
1. Pole - AlNiCo 2 / 18,5mm - 5mm 43 mT density
2. Pole - AlNiCo 2 / 18,5mm - 5mm 46 mT density
3. Pole - AlNiCo 2 / 18,5mm - 5mm 46 mT density
4. Pole - AlNiCo 2 / 18,5mm - 5mm 42 mT density
5. Pole - AlNiCo 2 / 18,5mm - 5mm 44 mT density
6. Pole - AlNiCo 2 / 18,5mm - 5mm 47 mT density
Spread 5 mT
(min 42 / max 47)
Moderate Character
Magnet density (mT) describes the magnetic field strength at each pole and how the pickup interacts with the strings.

Different magnet types have different ranges (e.g. Alnico ~30–65 mT, Ceramic ~60–90+ mT), and some variation is normal — even within the same pickup.

Typical pole-to-pole variation is ~5–15 mT.

Spread describes this:
Lower spread → more even response
Higher spread → more character and dynamics

Slugs → smoother field
Screws → more focused response

Winding ?

1. 43 AWG - Solderable polyurethane (SPN) 7500 turns
2. 48 AWG - TESTILANKA 4000 turns
Total 11500 turns
Wax Potting Unpotted — open and lively, but can squeal at high gain
This pickup delivers a classic vintage single coil tone with a balanced and musical character. Its moderate output, Alnico 2 magnets, and ~4.55 kHz resonant peak create a smooth, airy top end, warm low frequencies, and slightly forward upper mids without harshness. The relatively high Q factor (no load) gives it clarity and definition, while typical loading conditions soften the peak for a more rounded, usable response. Overall, it excels in dynamic playing situations, offering excellent touch sensitivity and a sweet, expressive tone ideal for clean to edge-of-breakup styles such as blues, classic rock, and funk.

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