MWS Wire /
MWS is the largest supplier of music industry pickup wire in the world. Since the 1970s MWS has supplied some of the world’s top guitar craftsmen with custom-made-to-order pickup wire. Over the decades, we have produced thousands of variations of guitar pickup wire at the request of customers. Some of our customers go to extremes to produce a highly particular tone or a tone that is accurate to a particular era instrument. MWS works right beside them in their quest for the perfect sound.
Variations in materials can have a huge impact on a pickup’s sound. The gauge of the wire, its insulation type and thickness, and the purity and flexibility of the copper or silver all influence the tone in subtle yet important ways. For example, two pickups can have an identical number of turns and identical magnets, but by using a different gauge of wire, one can produce a little fatter sound while the other is smoother on the top end. Although we offer options such as pure silver, copper is still the most popular.
Insulation in particular has a major effect on a pickup’s sound. There are at least 18 different types of wire insulation: polyurethanes, nylons, poly-nylons, polyester, and to name a few. See below for popular insulation options.
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Formvar (F)
Formvar was an early synthetic insulation composed of modified polyvinyl resins designed for continuous operation at 105C. It has excellent abrasion resistance and is compatible with most varnishes and impregnating compounds. The natural color of Formvar insulation is amber. Those who use Formvar in their pickups today say that it produces similar tonal quality to those vintage pickups of the 1950s and 1960s.
Plain Enamel
Plain enamel is used in a majority of “dual coil” or “humbucking” style pickup wire, which can be identified by its dark black color. Because plain enamel magnet wire was typically manufactured with a thin coat of insulation, now known as "single build," more turns can be added to the coils to enhance pickup coil performance. It is manufactured to single build dimensions and stocked in sizes 41 to 44 AWG.
Polyurethane (P) & Polyurethane Nylon (PN)
Polyurethane and polyurethane base nylon top-coated insulation are newer and have the advantage of being solder-strippable, with no need to sand off insulation in order to terminate. Wire with these insulations winds well into compact coils and quality exceeds most industry standards.
Dimensions
All diameters in inches. “Plain Enamel” only available in single build.
AWG | BUILD | MIN. | NOM. | MAX. |
---|---|---|---|---|
41 | Bare Single Heavy | .0027 .0030 .0032 | .0028 .0032 .0035 | .0029 .0033 .0037 |
42 | Bare Single Heavy | .0024 .0026 .0029 | .0025 .0028 .0030 | .0026 .0030 .0033 |
43 | Bare Single Heavy | .0021 .0023 .0025 | .0022 .0025 .0027 | .0023 .0027 .0039 |
DC Resistance
All diameters in inches. Tighter tolerances are available on request.
AWG | DIAMETER | DC RESISTANCE |
---|---|---|
41 | .0027 .0028 .0029 | 1.423 1.323 1.233 |
42 | .0024 .0025 .0026 | 1.801 1.659 1.534 |
43 | .0024 .0025 .0026 | 2.352 2.143 1.960 |