Lundahl Tube amplifier output transformer, LL2752

Tube Amplifier Output Transformer LL2752

LL2752 is an output transformer for tube amplifiers, primarily designed for 2k : 8 ohm applications. The LL2752 is available with different core air-gaps for different type of output stages. The transformers are highly sectioned with harmonically sized sections, which results in a minimum leakage inductance. This combined with a low capacitance coil winding technique results in a wide frequency range. The transformers are un-potted, open frame type suitable for mounting inside amplifier housings.

Pin spacing module, primary side: 5.08 mm (0.2")
Pin spacing module, secondary side: 7 mm approx.
Row spacing: 75mm approx.
Weight: 2.5 kg
Turns ratio: 12+12+12+12 : 2+ 1+1 +2+1+1
Core type: Lundahl silicon iron C-core. Also available with amorphous C-core

Frequency response, LL2752/60mA: 10 Hz 50 kHz +0/-1 dB
(source impedance 500W , load impedance 10 ohms)
Secondary connection C