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Product Detailed Parameters
- Description：AUDIO XFMR 2KCT / 4 CHAS MNT
- Series：1750
- Mfr：Hammond Manufacturing
- Package：Box
- Mounting Type：Chassis Mount
- Size / Dimension：4.063" L x 3.450" W (103.20mm x 87.63mm)
- Height - Seated (Max)：3.563" (90.50mm)
- Termination Style：Wire Leads
- Turns Ratio - Primary:Secondary：22.35:1
- Impedance - Primary (Ohms)：2kCT
- Impedance - Secondary (Ohms)：4
- DC Resistance (DCR) - Primary：11.4Ohm
- DC Resistance (DCR) - Secondary：100mOhm
- Transformer Type：Push-Pull Audiophile, Ultra-Linear - Tube Output
- Frequency Range：70Hz ~ 15kHz
- Frequency Response：±1dB
- Voltage - Isolation：-
- Insertion Loss：-
- Return Loss：-
- Power Level：100W
- Operating Temperature：-
- Approval Agency：-
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Overview
The Hammond Manufacturing 1750W is a single-channel audio and signal transformer designed for tube guitar amplifier applications. It features a primary impedance of 2,000 ohms center-tapped and a secondary impedance of 4 ohms. The unit has a power rating of 100 watts. DC resistance is specified at 11.4 ohms for the primary winding and 100 milliohms for the secondary winding. The frequency range extends from 70 Hz to 15 kHz. The component utilizes wire lead termination and weighs approximately 1.81 kg.
Feature Summary
- Designed for push-pull audiophile and ultra-linear tube output configurations
- Single-channel construction optimized for guitar amplifier circuits
- Center-tapped primary winding configuration
Applications
- Tube guitar amplifier output stages
- Push-pull audio circuit implementation
- Ultra-linear tube amplifier design
Procurement Notes
Verify the specific impedance requirements against the target amplifier circuit before procurement. Confirm that the 2,000-ohm center-tapped primary and 4-ohm secondary match the vacuum tube plate-to-plate load requirements. Ensure the 100-watt power rating exceeds the amplifier's maximum output capability. Check physical dimensions and weight constraints for enclosure compatibility. Validate wire lead termination suitability for the existing harness or PCB layout.
Selection Notes
Select this model when the amplifier design requires a 2,000-ohm center-tapped primary and 4-ohm secondary impedance. The 100-watt rating suits high-power tube amplifiers. Consider the 11.4-ohm primary DC resistance for biasing calculations. The 70 Hz to 15 kHz frequency response covers standard audio ranges. Verify compatibility with push-pull or ultra-linear topologies. Ensure the physical size accommodates the chassis space.
Part Context
The 1750W belongs to the Hammond 1750 series of tube guitar amplifier output transformers. This series includes variants with different power ratings and impedances, such as the 1750A (3.5W) and 1750E (12W). The 1750W represents a higher-power option within the lineup, specifically tailored for robust tube amplifier builds requiring significant output capacity.
Replacement Considerations
Direct substitutes must match the 2,000-ohm center-tapped primary, 4-ohm secondary, and 100-watt rating. Verify identical DC resistance values to maintain circuit performance. Cross-reference with other Hammond 1750 series parts only if electrical parameters align exactly.
