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Product Detailed Parameters
- Description：AUDIO XFMR 5K / 4, 8, 16 TH
- Series：1600
- Mfr：Hammond Manufacturing
- Package：Bulk
- Mounting Type：Through Hole
- Size / Dimension：5.000" L x 4.250" W (127.00mm x 107.95mm)
- Height - Seated (Max)：4.500" (114.30mm)
- Termination Style：-
- Turns Ratio - Primary:Secondary：-
- Impedance - Primary (Ohms)：5k
- Impedance - Secondary (Ohms)：4, 8, 16
- DC Resistance (DCR) - Primary：44Ohm, 98.5Ohm
- DC Resistance (DCR) - Secondary：210mOhm, 344mOhm
- Transformer Type：Push-Pull Potted, Ultra-Linear - Tube Output
- Frequency Range：30Hz ~ 30kHz
- Frequency Response：±1dB
- Voltage - Isolation：2000V @ 1 Second
- Insertion Loss：-
- Return Loss：-
- Power Level：100W
- Operating Temperature：-
- Approval Agency：-
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Overview
The Hammond Manufacturing 1650RP is a potted audio output transformer designed for push-pull tube amplifier applications. It features a primary impedance of 5,000 center-tapped ohms and supports secondary impedances of 4, 8, and 16 ohms. The unit has a power rating of 100W and operates within a frequency range of 30 Hz to 30 kHz. Maximum DC current is rated at 100 mA. The transformer is shielded and utilizes terminal connections for installation.
Feature Summary
- Push-pull configuration optimized for high-fidelity tube audio output stages
- Potted construction provides mechanical stability and environmental protection
- Integrated shielding reduces electromagnetic interference and noise coupling
Applications
- High-power vacuum tube audio amplifiers
- Professional public address systems
- Hi-fi stereo receiver output stages
Procurement Notes
Verify the specific suffix designation against the manufacturer's official datasheet to confirm electrical parameters. Ensure the required primary impedance matches the 5,000 CT specification. Confirm that the 100W power rating aligns with the target amplifier design requirements before finalizing procurement.
Selection Notes
Select this component when a robust, high-power solution for tube-based audio circuits is required. The 100W rating distinguishes it from lower-power variants in the series. Consider the physical dimensions and terminal mounting style during chassis layout planning to ensure proper fit and thermal management within the enclosure.
Part Context
This model belongs to the Hammond 1650 series of audio transformers. It serves as a specialized variant within the lineup, offering higher power handling compared to standard low-wattage models. The series is widely recognized in the vintage and modern tube amplifier rebuilding market for its reliability and consistent performance characteristics.
Replacement Considerations
The 1650HA is a related part number within the same product family but features different primary impedance (6.6kCT) and power ratings. Verify compatibility before substitution as electrical mismatch may affect amplifier performance.
