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Product Detailed Parameters
- Description：XFMR 4.2KCT / 2, 4, 8 CHAS MNT
- Series：1750
- Mfr：Hammond Manufacturing
- Package：Box
- Mounting Type：Chassis Mount
- Size / Dimension：4.050" L x 3.050" W (102.87mm x 77.47mm)
- Height - Seated (Max)：3.563" (90.50mm)
- Termination Style：Wire Leads
- Turns Ratio - Primary:Secondary：22.93:1
- Impedance - Primary (Ohms)：4.2kCT
- Impedance - Secondary (Ohms)：2, 4, 8
- DC Resistance (DCR) - Primary：68Ohm
- DC Resistance (DCR) - Secondary：160mOhm
- Transformer Type：Push-Pull Audiophile, Ultra-Linear - Tube Output
- Frequency Range：70Hz ~ 15kHz
- Frequency Response：±1dB
- Voltage - Isolation：-
- Insertion Loss：-
- Return Loss：-
- Power Level：60W
- Operating Temperature：-
- Approval Agency：-
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Overview
The Hammond Manufacturing 1750M is a tube application power transformer designed for audio signal processing. It features wire lead termination and operates within a frequency range of 70 Hz to 15 kHz. The unit has a single channel configuration with a primary impedance of 4,150 ohms center-tapped and a secondary impedance of 8 ohms. Rated at 10 watts, this chassis-mount component belongs to the 1750 series and is classified under audio and signal transformers.
Feature Summary
- Designed specifically for tube application power and audio signal transformation
- Supports chassis mounting with wire lead termination for circuit integration
- Operates within a defined frequency range of 70 Hz to 15 kHz
Applications
- Tube amplifier output stages
- Audio signal isolation
- Impedance matching in vacuum tube circuits
Procurement Notes
Verify the specific datasheet version for the 1750M model, as distributor listings may contain ambiguous or conflicting specifications compared to other variants in the 1750 series. Confirm that the primary impedance matches the required 4,150 ohms center-tapped configuration before procurement. Ensure compatibility with chassis mounting requirements and verify wire lead integrity upon receipt.
Selection Notes
Select the 1750M when a 10-watt rating and 4,150-ohm center-tapped primary impedance are required for tube-based audio designs. This model is suitable for applications needing a 70 Hz to 15 kHz frequency response. Compare against the 1750B and 1750E models if different impedance ratios or power ratings are necessary for the specific circuit topology.
Part Context
The 1750M is part of the Hammond Manufacturing 1750 series of audio and signal transformers. This series includes various models such as the 1750B and 1750E, which differ primarily in impedance ratios and power handling capabilities. All units in this family share similar chassis-mount construction and wire lead termination styles, catering to consistent integration needs in tube electronics.
Replacement Considerations
The Hammond Manufacturing 1750B is a documented substitute within the same series, though it features a different primary impedance of 5,482 ohms. Verify that the circuit design can accommodate the impedance difference between the 1750M and the 1750B before substitution.
