The LL1664 is a four-sectioned dual coil C-core tube amplifier output transformer for 3 k: 8 ohms impedance ratio available in PP and SE versions. The coil is wound using our high internal isolation technique with isolation foil between each copper layer. The core is an audio C-core of our own production.
Turns ratio: 9.6 + 9.6 : 1 or (3.2+6.4)+(3.2+6.4) : 1
Weight: 1.35 kg
Static resistance of each primary: 74 ohms
Static resistance of secondary: 0.5 ohms
Isolation between windings / between windings and core: 4 kV / 2 kV
Max DC current through any primary winding: 200mA
Primary leakage inductance, primaries in series: 8mH
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