Lundahl Small Size Tube amplifier output transformer, LL2766
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  • Lundahl Small Size Tube amplifier output transformer, LL2766

Lundahl Small Size Tube amplifier output transformer, LL2766

LL2766
€122.26 Tax excluded
149.16 € tax incl. for EU buyers

Lundahl Small Size Tube amplifier output transformer, LL2766

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Lundahl Small Size Tube amplifier output transformer, LL2766

LL2766 is a small size power output transformer for tube amplifiers. The transformer is available with different core air gap for PP or SE drives.
The transformer has a special high flux, low distortion audio C-core of our own production.
The LL2766PP is assembled with a small core air gap to allow for some DC current unbalance.
For the S.E. versions of the LL2766, the core air gap is chosen such that the denoted DC current (50mA for a LL2766/50mA) generates a no signal core flux density of 0.9 Tesla when used with all primaries in series. This leaves a flux density swing of 0.7 T for the signal.

Weight Turns ratio Static resistance, winding M Static resistance, winding L Static resistance, winding K
0.75 Kg 40+40 : 2+2+1+1 0.3 0.6 140
Max. current through any primary (“K”) section (4 W heat dissipation): 120 mA
Isolation between primary and secondary windings / between windings and core: 4 kV / 2 kV
Approx primary impedance Secondary impedance Secondary connection Actual turns ratio Max output voltage RMS SE / PP
6k 4 A 79:2 3V / 7V
6k 8 B 79:3 4.5V / 10V
6k 16 C 79:4 6V / 14V
3k 4 B 79:3 4.5V / 10V
3k 8 C 79:4 6V / 14V
3k 16 D 79:6 9V / 20V
Type Primary inducance Primary inducance inducance DC current for 0.9T Max output power across 8 ohm @ 30Hz, Sec. connection B Max output power across 8 ohm @30Hz, Sec. connection C
LL2766/PP 125H - 12.5W 24W
LL2766/30mA 43H 30mA 2.5W 4W
LL2766/50mA 25H 50mA 2.5W 4W
LL2766
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