1620

Overview

The Hammond Manufacturing 1620 is a push-pull audio output transformer designed for tube amplifier applications. It features a primary winding configuration of 6,600 CT with a current rating of 158mA. The secondary winding provides multiple impedance taps at 4, 8, and 16 ohms. This component is engineered to deliver a power rating of 20W, facilitating efficient signal transfer in high-fidelity audio circuits.

Feature Summary

• Push-pull output transformer architecture optimized for tube amplifier stages
• Multiple secondary impedance options including 4, 8, and 16 ohm taps
• Center-tapped primary winding design for balanced audio signal processing

Applications

• High-fidelity tube audio amplifiers
• Push-pull output stage construction
• Audio equipment restoration and repair

Procurement Notes

Verify the specific impedance tap requirements against the target amplifier circuit design before procurement. Confirm that the primary center-tap current rating aligns with the valve specifications. Ensure the physical mounting dimensions are compatible with the existing chassis layout. Cross-reference the manufacturer datasheet for precise electrical tolerances and thermal limits.

Selection Notes

Select this model when a 20W push-pull output transformer is required for tube-based audio systems. The availability of 4, 8, and 16 ohm secondary taps allows flexibility in matching various speaker impedances. The 6,600 CT primary specification suits standard vacuum tube configurations. Consider mechanical size constraints during integration into the amplifier enclosure.

Part Context

This component belongs to Hammond Manufacturing's range of audio transformers, specifically tailored for vintage and modern tube amplifier designs. It serves as a critical interface between the output valves and the loudspeaker system. The product line emphasizes acoustic fidelity and robust construction for professional and enthusiast audio markets.

Replacement Considerations

Direct substitutes may include other Hammond models with identical 20W power ratings and matching primary/secondary impedance characteristics. Verify that any alternative part maintains the same 6,600 CT primary specification and 4-8-16 ohm secondary configuration to ensure circuit compatibility.