Lundahl Tube amplifier output transformer, LL1691

Tube amplifier output transformer LL1691 9k : 8 ohms (for 845 tubes)

The LL1691 is a dual coil C-core tube amplifier output transformer for 9k: 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 17+17 : 1

Weight: 4.6 kg
Static resistance of each primary: 112 W
Static resistance of secondary: 0.3 W
Isolation between windings / between windings and core: 4 kV / 2 kV
Max DC current through any primary winding (10W heat dissip): 210mA