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Product Detailed Parameters
- Description：Tools/Equipment/Hardware
- Series：-
- Mfr：Hammond Manufacturing
- Package：Bulk
- Mounting Type：-
- Size / Dimension：-
- Height - Seated (Max)：-
- Termination Style：-
- Turns Ratio - Primary:Secondary：-
- Impedance - Primary (Ohms)：-
- Impedance - Secondary (Ohms)：-
- DC Resistance (DCR) - Primary：-
- DC Resistance (DCR) - Secondary：-
- Transformer Type：-
- Frequency Range：-
- Frequency Response：-
- Voltage - Isolation：-
- Insertion Loss：-
- Return Loss：-
- Power Level：-
- Operating Temperature：-
- Approval Agency：-
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Overview
The Hammond Manufacturing 1750EA is a tube application power transformer designed for push-pull audio output circuits. It features an unshielded chassis mount construction with wire lead termination. The primary winding impedance is specified as 8,500 ohms center-tapped, while the secondary winding provides an 8-ohm output. The unit supports a continuous power rating of 15 watts and operates within a frequency range of 70 Hz to 15 kHz. Physical dimensions are approximately 3.25 inches in length, 2.085 inches in width, and 1.995 inches in height.
Feature Summary
- Designed specifically for tube-based push-pull audio output applications
- Provides impedance matching between high-vacuum tube plates and low-impedance speakers
- Constructed with wire leads for direct circuit integration
- Features a robust chassis mount design suitable for panel installation
Applications
- Guitar amplifier output stages
- Hi-fi tube amplifier systems
- Vintage audio equipment restoration
- Custom tube-based signal processing units
Procurement Notes
Verify the specific suffix designation against official Hammond Manufacturing documentation to confirm electrical characteristics. Ensure the required primary impedance matches the vacuum tube plate resistance requirements of the target circuit design. Confirm physical mounting hole patterns align with existing chassis specifications before procurement.
Selection Notes
Select this component when a push-pull configuration requires an 8kCT primary impedance paired with an 8-ohm secondary load. Consider the 15-watt power handling capability relative to the intended amplifier output level. Evaluate the unshielded nature of the unit regarding potential electromagnetic interference in dense chassis layouts compared to shielded alternatives.
Part Context
This model belongs to the Hammond 1750 series of audio transformers, which are widely recognized in the vacuum tube audio industry. The series offers various impedance combinations tailored for different tube types and speaker configurations. These transformers are standard components in maintaining authentic tonal characteristics for classic amplifier designs.
Replacement Considerations
Direct substitutes include the Hammond 1750E and 1750Y models, provided their respective primary impedances (8kCT and 6.2kCT) match the circuit requirements. Verify that any replacement maintains the same 15-watt power rating and 8-ohm secondary specification to ensure proper load matching.
