Lundahl LL1539 Audio transformer

LL1593 is small size medium impedance transformer suitable for splitting and other general purpose applications.

LL1593 is a low-cost version of the LL1532, with the same winding structure but without Faraday shields and mu-metal housing.

Turns ratio: 1 + 1 : 2

Technical Details:

• Dims (Length x Width x Height above PCB (mm)):                                                   28 x 17 x 15 / 28 x 17 x 14

• Spacing between pins:                                                                                                3.81 mm (0.15")

• Spacing between rows of pins:                                                                                   20.32 mm (0.8")

• Weight:                                                                                                                         25 g / 19 g

• Rec. PCB hole diameter:                                                                                             1.5 mm

• Static resistance of each primary:                                                                              70 ohms

• Static resistance of secondary:                                                                                   175 ohms

• Distortion (primaries connected in series, source impedance 600 ohms):                   + 6 dBU primary level, 50 Hz: 0.2 %

• Distortion (primaries connected in series, source impedance 600 ohms):                   + 12 dBU primary level, 50 Hz: 1 %

• Self resonance point :                                                                                                   ~ 200 kHz

• Frequency response (source 600 ohms, load 10k ohms) :                                           10 Hz - 60 kHz +/- 0.3 dB

• Optimum termination for best square-wave response (source imp. 600 ohms) :     2 k ohms in series with 1.6 nF