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Product Detailed Parameters
- Description：AUDIO XFMR CHAS MNT
- Series：1650A
- Mfr：Hammond Manufacturing
- Package：Bulk
- Mounting Type：Chassis Mount
- Size / Dimension：-
- Height - Seated (Max)：-
- Termination Style：Wire Leads
- Turns Ratio - Primary:Secondary：-
- Impedance - Primary (Ohms)：-
- Impedance - Secondary (Ohms)：-
- DC Resistance (DCR) - Primary：-
- DC Resistance (DCR) - Secondary：-
- Transformer Type：Push-Pull Audiophile, Ultra-Linear - Tube Output
- Frequency Range：-
- Frequency Response：-
- Voltage - Isolation：-
- Insertion Loss：-
- Return Loss：-
- Power Level：-
- Operating Temperature：-
- Approval Agency：-
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Overview
The Hammond Manufacturing 1650LA is an audio output transformer designed for tube amplifier applications. It features a push-pull configuration with a primary impedance of 5,000 ohms center-tapped and supports secondary impedances of 4, 8, and 16 ohms. The unit has a power rating of 50 watts and operates within a frequency range of 30 Hz to 30 kHz. Electrical specifications include a primary DC resistance of 72.9 ohms and a secondary DC resistance of 100 milliohms. The transformer provides 2000V isolation for one second and utilizes wire lead termination for chassis mounting.
Feature Summary
- Push-pull design optimized for tube output stages
- Multi-tap secondary winding for flexible speaker matching
- Shielded construction to minimize electromagnetic interference
Applications
- High-fidelity vacuum tube audio amplifiers
- Professional tube-based sound reinforcement systems
- Custom guitar amplifier builds requiring specific impedance loads
Procurement Notes
Verify the exact primary impedance specification against the manufacturer datasheet, as variations exist within the 1650 series. Confirm that the 50-watt power rating aligns with the intended amplifier circuit requirements. Ensure chassis mounting provisions are compatible with the enclosure design prior to purchase.
Selection Notes
Select this model when a 5k-ohm primary impedance is required for the specific tube type in use. Compare against the 1650E and 1650HA variants if different power ratings or physical dimensions are necessary. Verify that the 50-watt capacity exceeds the maximum continuous power output of the amplifier tubes.
Part Context
The 1650LA belongs to the Hammond 1650 series of audio transformers, which are widely used in vintage and modern tube amplifier designs. This series offers various impedance configurations to match different tube types and speaker setups. The LA variant specifically addresses circuits requiring a 5k-ohm primary tap.
Replacement Considerations
The 1650E serves as a lower-power alternative with an 8k-ohm primary. The 1650HA offers a 6.6k-ohm primary with chassis mounting. Cross-reference these models only if the specific 5k-ohm impedance requirement can be relaxed.
