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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：7.500" L x 4.380" W (190.50mm x 111.25mm)
- Height - Seated (Max)：5.250" (133.35mm)
- Termination Style：Wire Leads
- Turns Ratio - Primary:Secondary：-
- Impedance - Primary (Ohms)：1.9kCT
- Impedance - Secondary (Ohms)：4, 8, 16
- DC Resistance (DCR) - Primary：15.65Ohm, 17.19Ohm
- DC Resistance (DCR) - Secondary：152mOhm, 203mOhm, 217mOhm
- Transformer Type：Push-Pull Audiophile, Ultra-Linear - Tube Output
- Frequency Range：30Hz ~ 30kHz
- Frequency Response：±1dB
- Voltage - Isolation：3535VDC @ 1 Second
- Insertion Loss：-
- Return Loss：-
- Power Level：280W
- Operating Temperature：-
- Approval Agency：-
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Overview
The Hammond Manufacturing 1650WA is a push-pull output transformer designed for tube amplifier applications. It features a power rating of 280W with a primary impedance of 1,900 CT and a maximum current of 806 mA. The secondary winding provides selectable impedances of 4, 8, and 16 Ohms. This component utilizes chassis mounting for secure installation within audio equipment enclosures.
Feature Summary
- Push-pull output configuration optimized for tube-based audio amplification
- High power handling capacity suitable for demanding audio applications
- Multi-tap secondary winding for flexible speaker impedance matching
Applications
- Tube guitar amplifier construction
- Hi-Fi audio amplifier output stages
- Professional audio equipment repair and modification
Procurement Notes
Verify the specific primary impedance requirement (1,900 CT) against the existing amplifier circuit design to ensure compatibility. Confirm that the chassis mounting style aligns with the enclosure layout. Check for RoHS compliance status if required by project specifications. Ensure the physical dimensions fit within the designated space in the target audio chassis.
Selection Notes
Select this model when a high-power push-pull output transformer is required for tube amplifiers. The 1,900 CT primary impedance must match the vacuum tube plate-to-plate load requirements. Consider the 280W power rating relative to the amplifier's output stage capabilities. The multi-tap secondary allows adaptation to various speaker loads without additional components.
Part Context
This component belongs to the Hammond Manufacturing line of audio transformers, specifically engineered for tube amplifier output stages. It serves as a critical interface between the vacuum tubes and the speaker load, providing necessary impedance transformation and electrical isolation. The series is recognized for its robust construction and reliability in high-fidelity audio reproduction systems.
Replacement Considerations
Direct substitutes include models with identical 1,900 CT primary impedance and 280W power rating. Verify secondary tap configurations (4, 8, 16 Ohms) match the original design. Chassis mounting style must be compatible with the existing enclosure. Consult manufacturer cross-reference lists for equivalent part numbers from other brands.
