Lundahl LL1627-PP Output Transformer for Tube Amplifiers Push-Pull

The Lundahl LL1627-PP is an open-frame tube amplifier output transformer for push-pull output stages, built around a special audio C-core, highly sectioned windings and flexible secondary connection options.

Primary Impedance
2.3 / 1.2 / 0.65 kΩ
Secundary Impedance
4 / 8 / 16 Ω
Power handling
62 / 125 / 250 Watt

€279.95

2 in stock

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SKU: LL1627-PP Categories: , ,
Description

Highlights of the Lundahl LL1627-PP

  • Designed for tube amplifier push-pull output stages
  • Special Lundahl audio C-core with 25 μ core air gap
  • Highly sectioned winding structure for low leakage inductance
  • Low-capacitance coil winding technique for wide frequency range
  • Flexible secondary connections for 4, 8 and 16 ohm loads
  • Open-frame construction for mounting inside an amplifier housing

 

Product details Lundahl LL1627-PP

Lundahl LL1627-PP Tube Amplifier Output Transformer for Push-Pull Output Stages

 

The Lundahl LL1627-PP is made for tube amplifiers using push-pull output stages. It uses the LL1627 primary winding configuration with a turns ratio of 4 x 8.5 : 8 x 1, making it the low-impedance option in this transformer family. Depending on the secondary connection alternative, the primary load impedance is 2.3 kΩ, 1.2 kΩ or 0.65 kΩ.

 

Its highly sectioned winding structure with harmonically sized sections helps minimize leakage inductance, while the low-capacitance coil winding technique supports a wide frequency range. The LL1627-PP uses a special Lundahl audio C-core with a 25 μ air gap for push-pull use, allowing for a small DC unbalance in the output circuit.

 

The LL1627-PP is suitable for demanding tube amplifier builds and other high-quality audio components where a robust output transformer is required. In push-pull operation, it supports up to 380 V RMS primary signal voltage at 30 Hz with all primary windings in series, and the maximum push-pull output power at 30 Hz is 62 W, 125 W or 250 W depending on the selected connection and transformer loss.

 

With its open-frame construction, 4 x M4 mounting holes and 2.5 kg weight, this transformer is intended for installation inside an amplifier housing. It is a strong choice for serious tube amplifier projects, including advanced DIY amplifier kits and custom designs that require flexible 4, 8 or 16 ohm secondary connections.

Specifications

Article numberLL1627-PP
EAN9502445684735
Transformer TypeOutput transformer for tube amplifiers, push-pull
Primary Voltage380 V
Secundary Voltage11 / 22 / 34 / 44 / 68 / 88 V
Primary Impedance2.3 / 1.2 / 0.65 kΩ
Secundary Impedance4 / 8 / 16 Ω
Power Handling62 / 125 / 250 Watt
Core TypeC-core
Inductance60 H
Max Output Voltage88 V
Turns Ratio4 x 8.5 : 8 x 1
# Mounting holes4
Dimensions (L x B x H)118 x 90
Article numberLL1627-PP
EAN9502445684735
Additional information
Transformer TypeOutput transformer for tube amplifiers, push-pull
Primary Voltage380 V
Secundary Voltage11 / 22 / 34 / 44 / 68 / 88 V
Primary Impedance2.3 / 1.2 / 0.65 kΩ
Secundary Impedance4 / 8 / 16 Ω
Power handling62 / 125 / 250 Watt
Core TypeC-core
Inductance60 H
Max Output Voltage88 V
Turns Ratio4 x 8.5 : 8 x 1
# Mounting Holes4
Dimensions (L x B x H)118 x 90
Shipping & Delivery
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