Lundahl LL5402 Audio Output Transformer
LL5402 is an audio output transformer for unbalanced drive, ideally used with mixed feedback drive circuits. The effect of capacitance between the primary and the secondary windings is can be reduced if pins 1 and 5 are connected to ground. The windings of the LL5402 are arranged such that cold ends of the primary widings surround each secondary winding.
Turns ratio: 2 + 2 : 1 + 1
Dims (Length x Width x Height above PCB (mm)): 43 x 28 x 21
Pin layout (viewed from component side) and winding schematics: Spacing between pins: 5.08 mm (0.2")
Spacing between rows of pins: 30.48 mm (1.2")
Weight: 92 g
Rec. PCB hole diameter: 1.5 mm
Static resistance of each primary: 30 W
Static resistance of each secondary: 7 W
Leakage inductance of secondaries (sec. in series): 0.2 mH
No-load impedance: >800 W @ 50 Hz, +20 dBU
Optimum source impedance: Minus 15 W (See application below)
Balance of output (according to IRT, source < 10 W , Load 600 W): > 60 dB
Distortion (connection as application example below, load 600 W) + 22 dBU 0.1% @ 50 Hz
Frequency response (as below , load 600 W): 20 Hz -- 40 kHz +/- 0.3 dB
Voltage loss across transformer (at midband with 600 W load): 0 dB
Isolation between primary and secondary windings / between
windings and core:
4 kV / 2 kV
All reviews:
great product 2nd time ill use them for a mnats 1176 rev J, excellent product and customer service
2nd time ill use them for a mnats 1176 rev J, excellent product and customer service
Great service Excellent product and customer service
Excellent product and customer service
lundahl LL5402 Excellent product and customer service tnx for everything regards Gregor
Excellent product and customer service tnx for everything regards Gregor
LL5402 Excellent product and customer service
LL5402 Excellent service !
Excellent service !
LL5402 fast and professional service!
fast and professional service!
Lundahl top Lundahl LL5402 Audio transformer is ideal for balanced line outputs on valve circuits
Lundahl LL5402 Audio transformer is ideal for balanced line outputs on valve circuits
I recommend it to everyone in the audio world I have not yet commissioned the Lundahl LL5402 transformer but I trust the manufacturer to read the feedback!
I have not yet commissioned the Lundahl LL5402 transformer but I trust the manufacturer to read the feedback!
Toller Transformer funktioniert toll, klingt toll, super! Ich rüste gerade alle meine Geräte mit diesem Trafo nach und sie gewinnen wirklich an Räumlichkeit.
funktioniert toll, klingt toll, super! Ich rüste gerade alle meine Geräte mit diesem Trafo nach und sie gewinnen wirklich an Räumlichkeit.
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