• Incl.Excl.
    VAT
    • Customer Support
    English
  • Incl.Excl.VAT
    • 0
    Cart

    Your cart is empty

    Close

    Categories

    Filters
      View all results (0)
        LL1689-18 Output Transformer for Tube Amplifiers 18mA

        Lundahl LL1689-18 Output Transformer for Tube Amplifiers 18mA

        €159,95

        2 In stock

        Add to cart

        Lundahl LL1689-18 Output Transformer for Tube Amplifiers 18mA

        0 reviews
        0 from 5
        0 reviews
        5 stars
        0%
        4 stars
        0%
        3 stars
        0%
        2 stars
        0%
        1 star
        0%
        View all reviews
        Brand: Lundahl
        New
        LL1689-18 Output Transformer for Tube Amplifiers 18mA
        € 132,19€ 159,95 2 In stock
        € 159,95
        +-
        Add to cart
        🔒 Secure payment
        MastercardVisaBank TransferCarte BancaireApple PayGoogle Paypaypal

        Buy now, pay later

        • We ship to 
        • Ordered now, shipped today
        • At least two years warranty
        • 45-day cooling-off period to return
        • Customer rating:
        Request quotation
        Do you have a question about this product?

        Do you have a question about this product?

        Our employee is happy to help you find the right product

        LL1689-18 Output Transformer for Tube Amplifiers 18mA

        Product description Lundahl LL1689-18 Output Transformer

        The Lundahl LL1689-18 is a line output transformer for single-ended tube amplifier designs, built with a dedicated 18 mA core air gap, low-capacitance primary winding technique, and Lundahl’s high-flux low-distortion audio C-core.

         

        Highlights of the Lundahl LL1689-18

        • Line output transformer for tube amplifiers
        • 18 mA single-ended version with dedicated core air gap
        • Special low-capacitance primary winding technique for high-frequency performance
        • High-flux, low-distortion audio C-core made by Lundahl
        • Supports 18:4, 18:2, and 18:1 single-ended line output connection alternatives
        • 4 kV isolation between primary and secondary windings, 2 kV between windings and core

         

        Product details Lundahl LL1689-18

        Lundahl LL1689-18 Line Output Transformer for Tube Amplifiers 18 mA

         

        The Lundahl LL1689-18 is designed as a line output transformer for tube amplifier circuits. As part of the LL1689 series, it uses primaries wound with a special low-capacitance technique to support strong high-frequency performance in demanding audio components and line-level output stages.

         

        This 18 mA single-ended version uses a core air gap chosen so that 18 mA DC current generates a no-signal core flux density of 0.9 Tesla when all primaries are connected in series. This leaves a flux density swing of 0.7 Tesla for the signal, making it suitable for carefully implemented single-ended amplifiers.

         

        The transformer supports single-ended line output connection alternatives of 18:4, 18:2, and 18:1. Primary inductance is 90 H for the LL1689-18 configurations, with maximum output voltage at 30 Hz of 56 V r.m.s. for 18:4, 28 V r.m.s. for 18:2, and 14 V r.m.s. for 18:1.

         

        Practical construction details include a 0.75 kg transformer weight, 4 x M3 mounting holes, and 4 kV isolation between primary and secondary windings, with 2 kV isolation between windings and core. The source impedance values of 3 kΩ to 3.5 kΩ are recommended upper limits unless frequency response compromises are acceptable, and resonance peaking at lower source impedance can be reduced with secondary load resistors.

        Show more

        Specifications

        Article number
        LL1689-18
        EAN
        9503888973776
        Transformer Type
        Line output transformer for tube amplifiers
        Core Material
        High flux, low distortion audio
        Core Type
        C-core
        Inductance
        90 H
        Max Output Voltage
        56 V
        Turns Ratio
        18:4 / 18:2 / 18:1
        Tolerance
        +/-1 dB
        # Mounting holes
        4
        Dimensions (L x B x H)
        61 x 73 x 53 mm3

        Show more

        Reviews

        0 reviews
        Review this product

        There are no reviews written yet about this product..

        LL1689-18 Output Transformer for Tube Amplifiers 18mA
        € 132,19
        € 159,95
        LL1689-18 Output Transformer for Tube Amplifiers 18mA
        2 In stock
        Add to cart
        Compare 0

        Add another product (max. 5)

        Start comparison