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This Lundhal LL1544A audio transformer is a general-purpose line input audio transformer that can be used for a wide range of applications. In particular, it can transform a balanced signal into an unbalanced one, or vice versa. This small transformer features two 3-section coils and Faraday shields. Its amorphous tape core combines high sensitivity for low-level signals with excellent capabilities for high-level signals. At low frequencies, phase response is excellent and resonance with a series capacitor is almost eliminated.
Technical characteristics
Specifications | |
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Product type | Audio transformer |
Transformation ratio | 1 + 1 + 1 + 1 : 2 + 2 |
Spacing betwen pins | 2.54mm |
Spacing between rows of pins | 22.86mm |
Static resistance | For each primary (average): 130Ω For each secondary (average): 260Ω |
Self resonance point | > 220kHz |
Recommended load for best square-wave response | 6.7kΩ + 470pF |
Frequency response (source 600Ω, load (6,7kΩ + 470pF) in parallel with 56kΩ ) | 10Hz - 70kHz +/-0.5dB @ 0dBU |
Loss across transformer (at 1kHz with terminaison as above) | 0.2dB |
Insulation | Between windings: 3kΩ Between windings and shields: 1.5kΩ |
General | |
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Dimensions | 30 x 22.5 x 14.5mm |
Weight | 27g |
Package | Sold by unit |