125CSE

Overview

The Hammond Manufacturing 125CSE is an audio output transformer designed for single-ended tube output circuits. It supports a power rating of 8 watts with a primary impedance of 10 kOhms and a secondary impedance of 32 Ohms. The unit features a frequency response of 100 Hz to 15 kHz at full rated power and operates with a current of 60 mA. Constructed in Canada, it serves as a general-purpose or replacement component for non-Hi-Fi applications.

Feature Summary

• Designed for single-ended tube output circuits
• Provides universal compatibility for general-purpose audio applications
• Constructed with high-quality magnetics suitable for tube-based equipment

Applications

• Single-ended tube amplifier output stages
• General-purpose audio transformer replacement
• Non-Hi-Fi tube circuit reconstruction

Procurement Notes

Verify the specific impedance requirements (10k primary, 32 ohm secondary) against the target circuit design. Confirm that the application does not require Hi-Fi grade specifications, as this model is explicitly designated for general-purpose use. Ensure physical dimensions and mounting constraints are compatible with the existing chassis layout before procurement.

Selection Notes

Select this component when replacing transformers in single-ended tube amplifiers requiring 10k primary impedance. It is suitable for general-purpose audio tasks rather than high-fidelity critical listening environments. Consider the 8-watt power handling capacity and 60 mA current rating to ensure compatibility with the vacuum tube's operational parameters.

Part Context

This component belongs to Hammond Manufacturing's line of audio transformers, specifically engineered for tube amplifier applications. The 125CSE variant focuses on standard single-ended configurations, offering a reliable solution for service and repair scenarios where original specifications match its 10k/32 ohm ratio.

Replacement Considerations

Direct substitutes must match the 10k primary and 32 ohm secondary impedance values. Verify that alternative components support the same 8-watt power rating and 60 mA current capacity to maintain circuit integrity.