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The Lundahl LL1623-PP is a push-pull tube amplifier output transformer with a highly sectioned winding structure, low leakage inductance, and a special audio C-core for wide frequency performance.
Lundahl LL1623-PP Tube Amplifier Output Transformer Push-Pull
The Lundahl LL1623-PP is built for push-pull tube amplifiers and uses the LL1623 transformer platform with a 25 µm core air gap. Its primary load impedance options include 5.6 kΩ, 3.0 kΩ, and 1.6 kΩ depending on the secondary connection alternative, making it suitable for a range of tube output stage configurations.
Its winding structure is highly sectioned with harmonically sized sections, reducing leakage inductance to a minimum. Combined with a low-capacitance winding technique and Lundahl’s special audio C-core, this design supports wide-band audio performance in demanding audio components.
For the LL1623, the turns ratio is 4 x 13.4 : 8 x 1. The primary static resistance with all primary windings in series is 164 Ω, the average static resistance of each secondary is 0.4 Ω, and the primary leakage inductance with all primary windings in series is 4.6 mH. The maximum primary signal voltage for push-pull operation is 610 V RMS at 30 Hz, and the transformer provides isolation of 3 kV between primary and secondary windings and 1.5 kV between windings and core.
The open-frame format is intended for installation inside an amplifier housing. With a weight of 2.5 kg, 5.08 mm pin spacing, and 4 x M4 mounting holes, the LL1623-PP is a substantial choice among tube amplifier amplifier accessories where robust construction and flexible secondary connection options for 4, 8, and 16 Ω loads are required.
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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
