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Product Detailed Parameters
- Description：XFMR 3.4KCT / 2, 4, 8, 16 CHAS
- Series：1750
- Mfr：Hammond Manufacturing
- Package：Box
- Mounting Type：Chassis Mount
- Size / Dimension：3.750" L x 3.090" W (95.25mm x 78.49mm)
- Height - Seated (Max)：3.188" (80.98mm)
- Termination Style：Solder Lug
- Turns Ratio - Primary:Secondary：14.24:1
- Impedance - Primary (Ohms)：3.4kCT
- Impedance - Secondary (Ohms)：2, 4, 8, 16
- DC Resistance (DCR) - Primary：41.3Ohm, 40.5Ohm, 81.8Ohm
- DC Resistance (DCR) - Secondary：120mOhm, 150mOhm, 210mOhm
- 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 1750P is a tube guitar amplifier output transformer designed for chassis mounting. It features a primary impedance of 3.4kCT Ohms and secondary impedances of 2, 4, 8, and 16 Ohms. The device operates within a frequency range of 50Hz to 12kHz with a power rating of 50W. It utilizes PC pin through-hole termination and has an impedance ratio of 14.24:1.
Feature Summary
- Designed specifically for tube guitar amplifier applications
- Provides multiple secondary impedance options for versatile speaker matching
- Utilizes PC pin through-hole termination for secure installation
Applications
- Tube guitar amplifier output stages
- Audio signal transformation in vacuum tube circuits
- Amplifier repair and replacement scenarios
Procurement Notes
Verify the specific impedance configuration required for your circuit design against the 3.4kCT primary and multi-tap secondary specifications. Ensure compatibility with chassis mounting requirements and PC pin through-hole termination methods. Confirm that the 50W power rating and 50Hz-12kHz frequency response meet the performance needs of the target audio application before finalizing procurement.
Selection Notes
Select this component when designing or repairing tube guitar amplifiers requiring a 3.4kCT primary impedance. The multiple secondary taps (2, 4, 8, 16 Ohms) allow flexibility in speaker load matching. Consider the 50W power handling capacity and the specified frequency range to ensure it aligns with the desired audio fidelity and output requirements of the amplifier system.
Part Context
The 1750P belongs to the Hammond 1750 series of audio transformers, which are widely recognized in the musical instrument industry. This series is engineered for high-performance tube amplifier applications, offering reliable signal transformation and robust construction suitable for the demanding environment of guitar amplification systems.
Replacement Considerations
Direct substitutes include models from the same 1750 series such as 1750D or 1750K, provided their impedance ratios and power ratings match the original design requirements. Verify that any replacement maintains the 3.4kCT primary impedance and compatible secondary tap configurations to ensure proper circuit operation.
