LL1528 is a Lundahl microphone input transformers built up from two coils, each with one primary and one secondarysection separated by a electrostatic shield. The core is a high permeability mu-metal core, and the transformer ishoused in a mu-metal can.
Spacing between rows of pins: 27.94 mm (1.1")Offset of earth pin from adjacent row: 2.54 mm (0.1")Weight: 46 gRec. PCB hole diameter: 1.5 mmStatic resistance of each primary: 42 WStatic resistance of each secondary: 450 WDistortion (primaries connected in parallel,source impedance 200 W ): + 0 dBU primary level, 50 Hz: 0.2 % + 10 dBU primary level, 50 Hz: 1 %Self resonance point : > 80 kHz Optimum termination for best square-wave response (Connection 1:5, source imp. 200W ) : 9 kW in series with 3 nFFrequency response (source and load as above): 10 Hz - 40 kHz +/- 0.3 dBIsolation between windings/ between windings and shield: 4 kV / 2 kVRecommended Output transformer for G9, Pultec, etc.
All reviews:
Lundahl top Lundahl LL1528 Audio transformer is ideal for micro inputs in valve circuits
Lundahl LL1528 Audio transformer is ideal for micro inputs in valve circuits
The legend, the best there is From Focusrite to Lake People, SPL and many other companies that use this transformer for their mic input bal/unbal converter- this is one of the best microphone transformers on the market. Buy it with confidence.
From Focusrite to Lake People, SPL and many other companies that use this transformer for their mic input bal/unbal converter- this is one of the best microphone transformers on the market. Buy it with confidence.
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