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| A regular pickup coil is extremely inefficient. The shape of the coil is elongated along all strings.This decreases the coil inductance, actually you barely can calculate the inductance of such a coil. A second factor is the permeability of the mixed plastic and string iron nuts. 70% of the inner core is plastic. The whole core adds up to 480 .. 500 squared mm. The nuts area is: 6(nuts) x PI x 2.5mm(radius)^2 → 110..120 squared mm. This represents 25%. To compensate such inneficiency the coil has around 6000 .. 8000 turns, with a wire which adds up a lot of capacitance and resitance. Such a coil has 1.8 to 2.5 Henrys. A humbucker dual coil would be double, like 4..5 Henrys. | 
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This huge number of turns adds up parasite capacitance. This makes the standard pickup sound dull and muddy.
Exi coil uses 6 separate coils with 99% full iron core.
Exi pickup achieves same inductance with 10 times fewer turns.
Coils turns tunning and proper phasing and assembly makes the magnetic field uniform across the pickup. Exi-pickup has 10 times less turns, reduced capacitance, the sound is much clean and the muddy effect is almost gone.
Order a pickup from early release batch for just 30% of the price |
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