1629SEA

Overview

The Hammond Manufacturing 1629SEA is a single-ended tube output audio transformer designed for high-fidelity applications. It features a primary impedance of 6500 ohms and supports secondary impedances of 4, 8, and 16 ohms. The unit handles 30 watts of power with a current rating of 100 mA. Operating within a frequency range of 20 Hz to 20 kHz, it provides a voltage isolation of 2 kV. Physical dimensions are 114.3 mm in length, 95.25 mm in width, and 115.82 mm in height, with an inductance of 55 H.

Feature Summary

• Single-ended design optimized for tube amplifier output stages
• Multi-tap secondary winding supporting 4, 8, and 16 ohm loads
• High voltage isolation capability for safety and signal integrity
• Chassis or wire mount installation flexibility

Applications

• High-fidelity tube audio amplifiers
• Single-ended triode (SET) amplifier builds
• Audio equipment restoration projects
• Custom tube preamplifier or power amplifier construction

Procurement Notes

Verify the specific datasheet version when ordering, as manufacturing updates may occur. Confirm that the required secondary impedance taps match your speaker load requirements. Ensure mounting hardware is compatible with the chassis dimensions provided. Check for any regional shipping restrictions due to product weight or size before finalizing the purchase order.

Selection Notes

Select this component for single-ended tube circuits requiring a 6.5k primary impedance. It is suitable for designs utilizing 4, 8, or 16 ohm speakers. Consider the physical size constraints of the enclosure during selection. Verify that the 30W power rating meets the amplifier's maximum output requirements. Ensure the operating frequency range aligns with the desired audio bandwidth.

Part Context

This transformer belongs to the Hammond Manufacturing audio transformer series, which includes various signal and power transformers for electronic applications. The 1629SEA is specifically categorized under audio transformers for tube-based systems. It serves as a critical coupling component between vacuum tubes and loudspeakers in vintage and modern hi-fi designs.

Replacement Considerations

No direct public substitute part numbers are confirmed for this specific model. Alternative transformers must be evaluated based on matching primary impedance, power handling, and physical footprint. Cross-referencing technical specifications is essential when considering generic replacements.