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Product Detailed Parameters
- Description：XFMR 8.5KCT / 4, 8, 16 CHAS MNT
- Series：1760
- Mfr：Hammond Manufacturing
- Package：Box
- Mounting Type：Chassis Mount
- Size / Dimension：3.250" L x 2.085" W (82.55mm x 52.96mm)
- Height - Seated (Max)：2.058" (52.27mm)
- Termination Style：Wire Leads
- Turns Ratio - Primary:Secondary：32.61:1
- Impedance - Primary (Ohms)：8.5kCT
- Impedance - Secondary (Ohms)：4, 8, 16
- DC Resistance (DCR) - Primary：150Ohm
- DC Resistance (DCR) - Secondary：300Ohm, 450mOhm
- Transformer Type：Push-Pull Audiophile, Ultra-Linear - Tube Output
- Frequency Range：70Hz ~ 15kHz
- Frequency Response：±1dB
- Voltage - Isolation：-
- Insertion Loss：-
- Return Loss：-
- Power Level：15W
- Operating Temperature：-
- Approval Agency：-
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Overview
The Hammond Manufacturing 1760E is a chassis-mount audio output transformer designed for tube amplifier applications. It features an 8.5kCT primary impedance and secondary options of 4, 8, or 16 ohms. The unit provides a turns ratio of 32.61:1 with a frequency response range of 70Hz to 15kHz. Primary DC resistance values are 150 Ohm and 300 Ohm, while the secondary DC resistance is 450mOhm. Physical dimensions are 3.250 inches in length by 2.085 inches in width, with a maximum height of 2.058 inches.
Feature Summary
- Designed as a replacement output transformer for Fender guitar tube amplifiers
- Features a 32.61:1 turns ratio for precise audio signal transfer
- Constructed with wire leads for standard chassis mounting
Applications
- Replacement for Fender Deluxe 5E3 tube amplifiers
- Replacement for Fender Princeton tube amplifiers
- Chassis-mounted audio output stages in vintage tube equipment
Procurement Notes
Verify that the specific application requires the 8.5kCT primary impedance configuration. Confirm compatibility with the target amplifier's secondary load requirements (4, 8, or 16 ohms). Ensure physical clearance allows for the specified chassis mount dimensions. Cross-reference datasheet specifications against original equipment manufacturer requirements to guarantee correct electrical performance.
Selection Notes
Select this component when replacing output transformers in Fender tube amplifiers requiring an 8.5kCT primary tap. Consider the 32.61:1 ratio and 70Hz-15kHz frequency response for accurate audio reproduction. Verify that the chassis mounting style and wire lead termination match the existing assembly constraints.
Part Context
This part belongs to the Hammond 1760 series of audio transformers. It is specifically engineered for high-fidelity audio output stages in vacuum tube circuits. The design prioritizes durability and acoustic accuracy for professional and enthusiast audio equipment maintenance.
Replacement Considerations
- Hammond 1750E
FAQ
What is the primary impedance configuration?
The primary impedance is configured as 8.5kCT (center-tapped).
What are the available secondary impedance options?
The secondary winding supports 4, 8, or 16 ohm configurations.
