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Product Detailed Parameters
- Description：XFMR 3.8KCT / 4, 8, 16 CHAS MNT
- Series：1750
- Mfr：Hammond Manufacturing
- Package：Box
- Mounting Type：Chassis Mount
- Size / Dimension：3.750" L x 3.320" W (95.25mm x 84.33mm)
- Height - Seated (Max)：3.873" (98.37mm)
- Termination Style：Wire Leads
- Turns Ratio - Primary:Secondary：14.21:1
- Impedance - Primary (Ohms)：3.8kCT
- Impedance - Secondary (Ohms)：4, 8, 16
- DC Resistance (DCR) - Primary：95.61Ohm
- DC Resistance (DCR) - Secondary：250mOhm
- Transformer Type：Push-Pull Audiophile, Ultra-Linear - Tube Output
- Frequency Range：50Hz ~ 12kHz
- Frequency Response：±1dB
- Voltage - Isolation：-
- Insertion Loss：-
- Return Loss：-
- Power Level：50W
- Operating Temperature：-
- Approval Agency：-
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Overview
The Hammond Manufacturing 1750G is a tube application power transformer designed for guitar amplifier output stages. It features a push-pull configuration with wire lead termination and chassis mounting. The primary impedance is 3,800 ohms center-tapped, while the secondary offers multiple taps at 4, 8, and 16 ohms. Rated for 50 watts of power, this audio signal transformer operates within a frequency range of 50 Hz to 12 kHz. It weighs approximately 7 lbs (3.18 kg) and belongs to the 1750 series.
Feature Summary
- Push-pull output transformer architecture for tube guitar amplifiers
- Multiple secondary impedance options including 4, 8, and 16 ohm taps
- Center-tapped primary winding design
- Chassis mount installation with wire lead connections
Applications
- Tube guitar amplifier output stages
- Audio signal transformation in high-power tube circuits
- Push-pull amplifier configurations requiring specific impedance matching
Procurement Notes
Verify the specific secondary impedance requirements against the amplifier circuit design before procurement. Confirm that the chassis mounting dimensions and wire lead lengths are compatible with the intended enclosure layout. Ensure the 50W power rating meets or exceeds the amplifier's maximum output demands to prevent thermal overload during operation.
Selection Notes
Select this component when a push-pull tube output stage requires a 3,800-ohm center-tapped primary. The availability of 4, 8, and 16 ohm secondary taps allows flexibility in speaker cabinet matching. Consider the physical weight and chassis mounting style as critical factors for structural integration in heavy-duty amplifier builds.
Part Context
This unit is part of the Hammond 1750 series, which specializes in audio and signal transformers for tube applications. The series includes various models differentiated by impedance ratios and power ratings. The 1750G specifically targets higher-power guitar amplifier outputs compared to lower-wattage variants in the same family.
Replacement Considerations
Direct substitutes within the same series may include models with identical 3,800-ohm primary and multi-tap secondary configurations but different power ratings. Verify that any replacement maintains the push-pull topology and chassis mounting compatibility to ensure proper fit and function.
