adjustable pole pieces 14 are placed in holes 13 in another coil form 16 coils 18 are wound around each coil form 16 both ends of each coil namely conductor 20 and 22 and conductors 21 and 23 are brought out of the coil and wired to miniature plugs 40 and 42 and 41 and 43 respectively immediately under the coil forms magnet 28 is placed this magnet has the property of strengthening the magnetic lines of flux thereby increasing the performance of the pickup along the side of magnet 28 is iron alignment block 30 adjustable pole pieces 14 are screwed into threaded holes 31 in iron alignment block 30 immediately below magnet 28 and iron alignment block 30 is shielded spacer plate 32 which is made of epoxy glass and is copperclad on the side in contact with magnet 28 and iron alignment block 30 adjustable pole pieces 14 are threaded through threaded holes 33 in shielded spacer plate 32 shielded spacer plate 32 also has clearance cutouts 34 which provide clearance for nuts 39 shielded spacer plate 32 rests on shielded base assembly mount 35 again adjustable pole pieces 14 are threaded through threaded holes 36 and shielded base assembly mount 35 spacer blocks 26 are placed along side of magnet 28 and shielded spacer plate 32 these spacer blocks are equivalent in height to the combined height of magnet 28 and shielded spacer plate.