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        LL1681 Moving Coil Input Transformer

        Lundahl LL1681 Moving Coil Input Transformer

        €129,95

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        Lundahl LL1681 Moving Coil Input Transformer

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        Brand: Lundahl
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        LL1681 Moving Coil Input Transformer
        € 107,40€ 129,95 Out of stock
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        LL1681 Moving Coil Input Transformer

        Product description Lundahl LL1681 Moving Coil Input Transformer

        The Lundahl LL1681 is a large-core moving coil input transformer with a mu-metal core, dual-coil construction and electrostatic shielding for high-quality low-level audio signal handling.

         

        Highlights of the Lundahl LL1681

        • Large-core moving coil input transformer with mu-metal core
        • Two coils with two-section primary windings and high-level secondary windings
        • Electrostatic shields between primary and secondary windings
        • Mu-metal housing for magnetic shielding
        • Configurable for 1:13 or 1:26 turns ratio connection
        • Wide frequency response from 7 Hz to 60 kHz in balanced 1:13 operation

         

        Product details Lundahl LL1681

        Lundahl LL1681 Moving Coil Input Transformer

         

        The Lundahl LL1681 is designed as a moving coil input transformer for demanding low-level signal applications. Its large mu-metal core and mu-metal housing provide magnetic shielding, making it a precise choice for sensitive audio components where clean signal transfer is essential.

         

        Internally, the LL1681 uses two coils, each with a two-sectioned primary winding and one high-level secondary winding with paper insulation. Electrostatic shields separate the windings, supporting stable performance and helping reduce unwanted coupling between primary and secondary sections.

         

        The transformer can be connected for a 1:13 or 1:26 turns ratio. In 1:13 balanced operation with a 40 ohm source and 47 kOhm load, it delivers a frequency response of 7 Hz to 60 kHz within +/- 1 dB. In unbalanced 1:13 operation under the same source and load conditions, the response is 7 Hz to 55 kHz within +/- 1 dB.

         

        Practical integration is supported by a compact 48 x 29 x 20 mm PCB-mounted format, 5.08 mm pin spacing, 35.56 mm row spacing and a recommended PCB hole diameter of 1.5 mm. For build verification and electric measurements, the LL1681 provides 4.8 ohm static resistance per primary, 820 ohm static resistance per secondary, 4 kV primary-to-secondary isolation and 2 kV isolation between windings and shield.

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        Specifications

        Article number
        LL1681
        EAN
        9501161544958

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        LL1681 Moving Coil Input Transformer
        € 107,40
        € 129,95
        LL1681 Moving Coil Input Transformer
        Out of stock
        Add to cart
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