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The Lundahl LL1941 is a cost-no-object moving coil step-up transformer for low-output MC cartridges, combining an uncut amorphous cobalt core, dual-coil construction, Cardas high-purity copper wire and mu-metal shielding.
Lundahl LL1941 Amorphous Core Moving Coil Input Transformer
The Lundahl LL1941 is designed as a premium audio component for moving coil cartridge input stages. It is a high turns-ratio version of Lundahl’s LL1931 moving coil step-up transformer, developed specifically for low-output MC cartridges where maximum signal integrity and low noise pickup are essential.
At the heart of the LL1941 is Lundahl’s unique uncut amorphous cobalt core, combined with a dual-coil structure and Cardas high-purity copper wire. This oversized construction is intended to deliver the best possible MC transformer performance, while the dual-coil layout greatly improves immunity to external magnetic fields from power supplies, motors and similar sources in high-end home audio systems.
The transformer offers a turns ratio of 1 + 1 : 16 + 16 and supports multiple connection alternatives, including serial-serial connection for 1:16 and parallel-serial connection for 1:32. In serial connection with a 10 Ω source and open secondaries, the LL1941 delivers a frequency response of 10 Hz to 100 kHz within +/- 1.0 dB.
For integration into a phono preamplifier or custom MC input stage, the LL1941 is housed in a mu-metal can and uses PCB pins with 5.08 mm spacing and 30.5 mm row spacing. The transformer measures 43 x 28 x 22 mm above the PCB and weighs 90 g. Each primary has a static resistance of 0.8 Ω, each secondary has a static resistance of 105 Ω, and isolation is rated at 3 kV between windings and 1.5 kV between windings and core.
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Speakers
Amplifiers
DAC converters
DSP modules
Turntables
Streamers
Woofers
Tweeters
Exciters
Bass shakers
Plate amplifiers
Amplifier modules
Single board computers
Assembled crossovers
Printed Circuit Boards (PCB)
Capacitors
Resistors
Coils
Circuit Breakers
Crossover tools
Screw terminals
Acoustic measurements
Electric measurements
Sound level meters
DIY amplifier kits
DIY component packs
DIY speaker kit
DIY subwoofer kits
DIY bluetooth speaker
DIY electronics kits
Binding posts
Cabinet Hardware
Cables
Connectors
Speaker cabinets
Electromechanics
Power supplies
Speaker repair
Workshop & tools
Amplifier accessories
Stands & mounts
Gift voucher
Books
New products
