Lundahl Microphone Transformer, LL2916

Ribbon Microphone Transformer LL2916

Mu metal lamination core version of LL1927A.

The product is a very high turns ratio transformers for active ribbon microphones. The transformer has an uncut amorphous strip core and is built up from two coils of each four sections for low leakage inductance.

Turns ratio: 1 + 1 : 55 + 55
Dims: (Length x Width x Height above PCB (mm)) 30 x 22.5 x 14.5

Spacing between pins positions: 2.54 mm (0.1"")
Spacing between rows of pins: 22.86 mm (0.9"")
Weight: 27 g
Rec. PCB hole diameter: 1.5 mm
Housing: Mu metal
Core: Mu metal lamination
Static resistance of each primary (average): 0.05 ?
Static resistance of each secondary (average): 182 ?
Frequency response (Source 0.3W, load 10kW. Connection 1 : 110. Secondary signal level 0dBU): 10Hz 70kHz +/- 1dB