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Product Detailed Parameters
- Description：XFMR 6.6KCT / 4, 8, 16 CHAS MNT
- Series：A
- Mfr：Hammond Manufacturing
- Package：Box
- Mounting Type：Chassis Mount
- Size / Dimension：4.000" L x 3.130" W (101.60mm x 79.50mm)
- Height - Seated (Max)：3.810" (96.77mm)
- Termination Style：Wire Leads
- Turns Ratio - Primary:Secondary：-
- Impedance - Primary (Ohms)：6.6kCT
- Impedance - Secondary (Ohms)：4, 8, 16
- DC Resistance (DCR) - Primary：63.69Ohm, 71.33Ohm
- DC Resistance (DCR) - Secondary：74mOhm, 223mOhm, 258mOhm
- Transformer Type：Push-Pull Audiophile, Ultra-Linear - Tube Output
- Frequency Range：30Hz ~ 30kHz
- Frequency Response：±1dB
- Voltage - Isolation：2000V @ 1 Second
- Insertion Loss：-
- Return Loss：-
- Power Level：40W
- Operating Temperature：-
- Approval Agency：-
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Overview
The Hammond Manufacturing 1650HA is a chassis-mount audio output transformer designed for push-pull tube amplifier applications. It features a primary impedance of 6.6kCT and secondary outputs of 4, 8, and 16 Ohms. The unit operates within a frequency range of 30Hz to 30kHz with a maximum deviation of ±1dB at full rated power. It delivers a power rating of 40W and includes a Faraday shield for noise reduction. The physical dimensions are 4.000 inches in length, 3.130 inches in width, and 3.810 inches in height.
Feature Summary
- Push-pull tube output design optimized for high-fidelity audio reproduction
- Enclosed and shielded construction to minimize electromagnetic interference
- Chassis mounting configuration with wire lead termination for secure installation
Applications
- High-fidelity vacuum tube audio amplifiers
- Professional audio equipment output stages
- Custom tube amplifier builds requiring specific impedance matching
Procurement Notes
Verify the exact primary impedance specification (6.6kCT) against the target amplifier circuit requirements before procurement. Confirm that the chassis mount style and wire lead termination are compatible with the intended enclosure design. Ensure the 40W power rating meets the system's peak power demands without exceeding thermal limits.
Selection Notes
Select this model when a 6.6kCT primary impedance is required for push-pull tube circuits. Compare against the 1650PP series if through-hole mounting is preferred instead of chassis mounting. Consider the 1650E series if lower power ratings or different impedance configurations better suit the specific application needs.
Part Context
This component belongs to the 1650 series of audio transformers from Hammond Manufacturing. These units are engineered for general-purpose and replacement use in push-pull tube output circuits. The series offers various impedance options and mounting styles to accommodate diverse amplifier designs while maintaining consistent audio performance standards.
Replacement Considerations
The 1650PP serves as a functional alternative within the same series but utilizes through-hole mounting rather than chassis mounting. Verify that the mechanical footprint and terminal type differences do not impact the existing assembly design.
