Acoustic guitar pickups. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Musician
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I offer two ways to make a pickup for a six-string acoustic guitar.
1. We take five magnets from the kit for assembling cabinet doors. We release them from unnecessary "details" and glue them into one long solid piece with superglue (Fig. 1).
Then glue a strip of tape on each side. The magnetic core of the pickup is ready. Now we wind the coils, each with 50 turns (wire with a diameter of 0,1 mm or thinner), with such a distance between them that, being under the strings, each one, respectively, was closer to its own. There are six coils in total, according to the number of strings (Fig. 2).
The pickup is ready, but it needs to be "styled" so that it matches the appearance of the guitar. To do this, we place it in a rubber tube (from under a rubber water heater) with a longitudinal (one) slot. To connect to the pickup amplifier, we glue (with the same superglue) the headphone jack (from any player, etc.), to which we glue the leads from the pickup.
A general view of the finished pickup is shown in Fig. 3.
Before putting on the tubes, the coils are protected from damage - a strip of adhesive tape is glued along the core over the coils.
The pickup is attached with superglue, but not immediately on the surface of the guitar! What if you ever decide to replace or just remove the pickup? Therefore, first you should stick adhesive tape on the surface of the guitar in the places where the pickup is glued.
It should be noted that when the pickup approaches the end of the strings, the signal level at its output is lower, the sound has a metallic character, and at a distance of 2...5 cm to the end of the strings, the sound is more melodic and "bass", with a larger output amplitude.
The signal level of the pickup is approximately the same as that of a dynamic microphone.
2. You will need six heads from the tape recorder, and the heads must be the same. We remove from them the petals intended for the exact stretching of the tape, as shown in fig. 4.
We twist the heads into the pickup with long thin screws (Fig. 5).
Polyvinyl chloride tubes of the required length are put on top of the screws. From the bottom of the pickup, a printed circuit board is soldered to the head leads, the tracks of which respectively connect the heads to each other into one "coil" of the pickup, and a socket is soldered on the same board.
The heads are placed at such a distance from each other that they correspond to each of its strings.
Although these pickups, like all others, are for steel-backed strings, this is fixable! To do this, you need to take a small amount of Moment glue or nail polish (preferably transparent), sharpen a very fine powder from a permanent magnet on a file. Mix the powder and glue and apply to the area of the string, under which the pickup is directly located.
PS All the ideas came from making a pickup for my guitar.
Author: A.Melnikov, Mstislavl
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