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        LL1690 Amorphous Core Line Input Transformer

        Lundahl LL1690 Amorphous Core Line Input Transformer

        €159,95

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        Lundahl LL1690 Amorphous Core Line Input Transformer

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        Brand: Lundahl
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        LL1690 Amorphous Core Line Input Transformer
        € 132,19€ 159,95 Out of stock
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        LL1690 Amorphous Core Line Input Transformer

        Product description Lundahl LL1690 Amorphous Core Line Input Transformer

        The Lundahl LL1690 is a high-level line input transformer for demanding audio applications, built around an uncut cobalt-based amorphous strip core and housed in a mu-metal can.

         

        Highlights of the Lundahl LL1690

        • High-level line input transformer with cobalt-based amorphous strip core
        • Turns ratio of 1 + 1 : 1 + 1 for flexible connection options
        • Suitable for tube amplifier line input and phase splitting applications
        • Dual-coil structure improves immunity to external magnetic fields
        • Electrostatic shielding between primary and secondary windings
        • Wide 10 Hz to 100 kHz frequency response in serial connection

         

        Product details Lundahl LL1690

        Lundahl LL1690 Amorphous Core High Level Line Input Transformer

         

        The Lundahl LL1690 is designed for high-end line-level audio use, especially where clean signal transfer and balanced circuit behavior are important. Its 1 + 1 : 1 + 1 winding configuration supports serial-serial 1:1 operation for high-level line input, making it suitable for refined audio components and tube amplifiers.

         

        The transformer uses an uncut cobalt-based amorphous strip core and is enclosed in a mu-metal can. Primary and secondary windings are separated by electrostatic shields, while the dual-coil construction helps reduce sensitivity to external magnetic fields from sources such as power supplies and motors.

         

        For phase-splitting applications, the winding arrangement provides a high degree of symmetry. The LL1690 supports phase splitting for both 1 : 1 + 1 and 2 : 1 + 1 input configurations, with phase splitting balance better than 55 dB from 10 Hz to 50 kHz in the specified 2 : 1 + 1 connection.

         

        Performance is specified with a frequency response of 10 Hz to 100 kHz within ±1.0 dB in serial connection, using a 1 kΩ source and 40 kΩ load in parallel with 7 kΩ + 400 pF. Each primary and secondary winding has a static resistance of 150 Ω. The compact PCB-mount package measures 42 x 28 x 22 mm above the PCB, uses 5.08 mm pin spacing, and weighs 81 g.

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        Specifications

        Article number
        LL1690
        EAN
        9503968497376

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        LL1690 Amorphous Core Line Input Transformer
        € 132,19
        € 159,95
        LL1690 Amorphous Core Line Input Transformer
        Out of stock
        Add to cart
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