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Product Detailed Parameters
- Description：AUDIO XFMR 2KCT / 8 CHAS MNT
- Series：146
- Mfr：Hammond Manufacturing
- Package：Bulk
- Mounting Type：Chassis Mount
- Size / Dimension：1.630" L x 0.880" W (41.40mm x 22.35mm)
- Height - Seated (Max)：0.810" (20.57mm)
- Termination Style：Wire Leads
- Turns Ratio - Primary:Secondary：-
- Impedance - Primary (Ohms)：2kCT
- Impedance - Secondary (Ohms)：8
- DC Resistance (DCR) - Primary：97Ohm
- DC Resistance (DCR) - Secondary：700mOhm
- Transformer Type：Economical Open Type
- Frequency Range：150Hz ~ 15kHz
- Frequency Response：±1dB
- Voltage - Isolation：-
- Insertion Loss：-
- Return Loss：-
- Power Level：700mW
- Operating Temperature：-
- Approval Agency：-
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Overview
The Hammond Manufacturing 146N is an economical open-type audio transformer designed for chassis mounting. It features a primary impedance of 2000 ohms with a center tap and a secondary impedance of 8 ohms. The unit operates within a frequency range of 150Hz to 15kHz, maintaining a response accuracy of ±1dB. Electrical specifications include a primary DC resistance of 97 ohms and a maximum DC current rating of 3 mA. The transformer supports a power level of 700 mW and utilizes insulated, color-coded flexible leads for connection.
Feature Summary
- Economical open-frame construction suitable for standard chassis installation
- Center-tapped primary winding configuration for balanced circuit interfacing
- Color-coded insulated flexible leads for simplified wiring integration
Applications
- Audio output stage coupling in tube amplifier designs
- Impedance matching between vacuum tube stages and speakers
- Signal transformation in vintage audio restoration projects
Procurement Notes
Verify the specific lead length requirements against your chassis design, as the 146 series typically specifies minimum lead lengths. Confirm that the 2000-ohm center-tapped primary matches your tube plate load expectations. Ensure the 8-ohm secondary aligns with your speaker or load impedance. Check RoHS compliance status if environmental regulations apply to your assembly process.
Selection Notes
Select this component when a cost-effective solution for tube-to-speaker impedance matching is required. The 2000-ohm primary suits common pentode or triode configurations. Consider the physical dimensions and bracket mounting style for enclosure fitment. This model is appropriate for general-purpose audio applications rather than high-fidelity studio-grade signal paths requiring wider bandwidth.
Part Context
The 146N belongs to the Hammond 146 series of audio transformers, which are characterized by their open construction and economical pricing. This series is widely used in hobbyist and professional audio repair contexts. Similar models in the series, such as the 146E, offer different impedance ratios while sharing the same mechanical mounting footprint and general performance characteristics.
Replacement Considerations
The 146E is a documented alternative within the same series, offering a 100-ohm center-tapped primary instead of 2000 ohms. Verify that the impedance ratio change does not affect your circuit biasing or loading requirements before substituting.
