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Product Detailed Parameters
- Description：XFMR 4.2KCT / 4, 8, 16 CHAS MNT
- Series：1760
- Mfr：Hammond Manufacturing
- Package：Box
- Mounting Type：Chassis Mount
- Size / Dimension：4.050" L x 3.150" W (102.87mm x 80.01mm)
- Height - Seated (Max)：3.193" (81.10mm)
- Termination Style：Wire Leads
- Turns Ratio - Primary:Secondary：31.16:1
- Impedance - Primary (Ohms)：4.2kCT
- Impedance - Secondary (Ohms)：4, 8, 16
- DC Resistance (DCR) - Primary：46.48Ohm, 51.04Ohm
- DC Resistance (DCR) - Secondary：252mOhm, 480mOhm, 714mOhm
- 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 1760L is an open-style output transformer designed for tube guitar amplifiers. It features a primary impedance of 4,200 Ohms Center Tapped and secondary impedances of 4, 8, and 16 Ohms. The unit supports a power rating of 60 Watts generally, with specific compatibility noted for 50 Watts in Bassman Head configurations. It utilizes a flange mount style with seven terminal wire leads for connection.
Feature Summary
- Open-style construction suitable for direct replacement in tube amplifier circuits
- Multi-tap secondary winding providing 4, 8, and 16 Ohm output options
- Flange mounting design with integrated wire leads for secure installation
Applications
- Tube guitar amplifier output stages
- Bassman head amplifier modifications
- Audio signal transformation in vintage amplifier restoration
Procurement Notes
Verify the specific amplifier model and required wattage rating before purchase. Confirm that the flange mount dimensions and terminal lead configuration match the existing chassis layout. Ensure the center-tapped primary specification aligns with the amplifier's circuit design to prevent impedance mismatch issues during operation.
Selection Notes
Select this component based on the precise primary impedance of 4,200 Ohms Center Tapped and the required secondary load options. Consider the physical flange mount requirements and the need for wire lead connections rather than solder tabs. Evaluate the 60W power handling capacity against the amplifier's maximum output requirements to ensure adequate thermal and electrical performance.
Part Context
This component belongs to the audio transformer category manufactured by Hammond Manufacturing. It serves as a specialized replacement part for musical instrument amplification equipment. The product is distinct from general-purpose transformers due to its specific impedance ratios and mechanical mounting style tailored for guitar amp chassis integration.
Replacement Considerations
- Hammond Manufacturing 1760L
FAQ
What is the primary impedance configuration?
The primary impedance is 4,200 Ohms with a center tap.
How many secondary impedance taps are available?
There are three secondary taps: 4 Ohms, 8 Ohms, and 16 Ohms.
