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Product Detailed Parameters
- Description：AUDIO XFMR 3.4KCT / 4, 8, 16 TH
- Series：1600
- Mfr：Hammond Manufacturing
- Package：Bulk
- Mounting Type：Through Hole
- Size / Dimension：3.880" L x 3.310" W (98.55mm x 84.07mm)
- Height - Seated (Max)：4.250" (107.95mm)
- Termination Style：-
- Turns Ratio - Primary:Secondary：-
- Impedance - Primary (Ohms)：3.4kCT
- Impedance - Secondary (Ohms)：4, 8, 16
- DC Resistance (DCR) - Primary：-
- DC Resistance (DCR) - Secondary：-
- Transformer Type：Push-Pull Potted, Ultra-Linear - Tube Output
- Frequency Range：30Hz ~ 30kHz
- Frequency Response：±1dB
- Voltage - Isolation：-
- Insertion Loss：-
- Return Loss：-
- Power Level：50W
- Operating Temperature：-
- Approval Agency：-
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Overview
The Hammond Manufacturing 1650KP is a potted audio output transformer designed for push-pull tube circuits. It features a primary impedance of 3,400 ohms center-tapped and secondary taps for 4, 8, and 16 ohms loads. The unit has a power rating of 50 watts and operates within a frequency range of 30 Hz to 30 kHz. Enclosed in a drawn steel case, it utilizes terminal connections and measures approximately 2.5 inches by 3.25 inches by 3.06 inches.
Feature Summary
- Potted construction enclosed in a drawn steel case
- Designed specifically for push-pull tube output applications
- Multiple secondary impedance options including 4, 8, and 16 ohms
Applications
- Push-pull tube amplifier output stages
- Audio signal transformation in vacuum tube equipment
- Matching tube output circuits to speaker loads
Procurement Notes
Verify the specific part number suffix against official Hammond Manufacturing documentation to confirm impedance and power ratings. Ensure the component matches the required circuit topology, as variations exist within the series. Confirm physical dimensions and terminal types align with the target chassis design before procurement.
Selection Notes
Select this model when a 50-watt capacity and 3,400-ohm center-tapped primary impedance are required for tube-based audio systems. Consider the potted enclosure for environmental protection and the steel casing for shielding. Verify that the available secondary taps (4, 8, 16 ohms) match the connected load impedances.
Part Context
This component belongs to the Hammond 1600 series of audio transformers. It is engineered to pair with compatible Hammond power transformers, such as the 300P series, to form complete transformer sets for high-fidelity tube amplifiers. The series emphasizes robust construction suitable for demanding audio environments.
Replacement Considerations
The 1650PP is a related model but differs significantly with a 6.6kCT primary impedance and 60W rating. Direct substitution requires verifying circuit compatibility due to the distinct impedance mismatch between the 3.4kCT and 6.6kCT configurations.
