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Product Detailed Parameters
- Description：XFMR 1.9KCT / 4, 8, 16 CHAS MNT
- Series：A
- Mfr：Hammond Manufacturing
- Package：Box
- Mounting Type：Chassis Mount
- Size / Dimension：4.500" L x 3.750" W (114.30mm x 95.25mm)
- Height - Seated (Max)：4.560" (115.82mm)
- Termination Style：Wire Leads
- Turns Ratio - Primary:Secondary：-
- Impedance - Primary (Ohms)：1.9kCT
- Impedance - Secondary (Ohms)：4, 8, 16
- DC Resistance (DCR) - Primary：22.07Ohm, 24.85Ohm
- DC Resistance (DCR) - Secondary：251mOhm, 334mOhm, 359mOhm
- Transformer Type：Push-Pull Audiophile, Ultra-Linear - Tube Output
- Frequency Range：30Hz ~ 30kHz
- Frequency Response：±1dB
- Voltage - Isolation：2000V @ 1 Second
- Insertion Loss：-
- Return Loss：-
- Power Level：120W
- Operating Temperature：-
- Approval Agency：-
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Overview
The Hammond Manufacturing 1650TA is a shielded audio output transformer designed for tube application power circuits. It features a push-pull configuration with a primary impedance of 1,900 CT and a maximum DC current rating of 403 mA. The secondary winding provides selectable impedances of 4, 8, and 16 Ohms. Rated at 120 W, the unit operates within a frequency range of 30 Hz to 30 kHz. Physical dimensions are 4.5 inches in length, 3.75 inches in width, and 4.56 inches in height, with a unit weight of 4.717 kg.
Feature Summary
- Push-pull output transformer topology optimized for tube amplifier applications
- Shielded construction to minimize electromagnetic interference
- Multi-tap secondary winding supporting 4, 8, and 16 Ohm loads
Applications
- Tube amplifier output stages
- High-power audio signal transmission
- Push-pull circuit implementation
Procurement Notes
Verify the specific part number against official Hammond Manufacturing documentation to confirm electrical ratings and physical dimensions. Ensure compatibility with existing chassis mounting requirements and thermal management needs. Cross-reference datasheet specifications for primary impedance and current limits before integration into final designs.
Selection Notes
Select this component for high-power tube amplifier projects requiring a 120 W push-pull output stage. The 1,900 CT primary impedance suits specific vacuum tube configurations. Consider the physical size and weight when designing enclosure layouts. Verify that the available secondary taps match the speaker load requirements of the target system.
Part Context
This model belongs to the Hammond Manufacturing 1650A series of audio transformers. The series includes variants such as the 1650E and 1650PP, which offer different power ratings and primary impedances. The 1650TA represents a higher power option within this family, distinguished by its 120 W rating and specific 1,900 CT primary specification.
Replacement Considerations
The 1650PP is a discontinued alternative within the same series but offers different electrical characteristics including a 6.6kCT primary impedance and 60W rating. Direct substitution requires verification of impedance matching and power handling capabilities against the original design requirements.
