1650R

Description：XFMR 5KCT / 4, 8, 16 CHAS MNT
Series：1600
Mfr：Hammond Manufacturing
Package：Bulk

SKU:cea75c435ec2 Category: Audio Transformers Brand: Hammond Manufacturing

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Product introduction

Product Detailed Parameters

Description：XFMR 5KCT / 4, 8, 16 CHAS MNT
Series：1600
Mfr：Hammond Manufacturing
Package：Bulk
Mounting Type：Chassis Mount
Size / Dimension：4.250" L x 3.750" W (107.95mm x 95.25mm)
Height - Seated (Max)：4.560" (115.82mm)
Termination Style：Wire Leads
Turns Ratio - Primary:Secondary：-
Impedance - Primary (Ohms)：5kCT
Impedance - Secondary (Ohms)：4, 8, 16
DC Resistance (DCR) - Primary：-
DC Resistance (DCR) - Secondary：-
Transformer Type：Push-Pull Audiophile, Ultra-Linear - Tube Output
Frequency Range：30Hz ~ 30kHz
Frequency Response：±1dB
Voltage - Isolation：-
Insertion Loss：±1dB
Return Loss：1650R
Power Level：100W
Operating Temperature：-
Approval Agency：-

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1650R

Overview

The Hammond Manufacturing 1650R is a shielded audio output transformer designed for push-pull tube amplifier circuits. It features a primary impedance of 5,000 ohms center-tapped and supports secondary loads of 4, 8, and 16 ohms. The unit has a power rating of 100W with a maximum DC current of 318 mA. Operating frequency ranges from 30 Hz to 30 kHz. Physical dimensions are 4.250 inches in length by 3.750 inches in width, weighing approximately 5.4 kg.

Feature Summary

Designed specifically for general-purpose and replacement use in push-pull tube output circuits
Provides multiple secondary impedance options (4, 8, and 16 ohms) for flexible speaker matching
Constructed as a shielded unit to minimize electromagnetic interference in audio applications

Applications

Push-pull tube audio amplifier output stages
General-purpose audio signal transformation
Replacement for legacy tube amplifier designs

Procurement Notes

Verify the specific pinout configuration and mounting hole spacing against the target chassis design before procurement. Confirm that the 100W power rating aligns with the amplifier's thermal management capabilities. Ensure the 5,000-ohm primary impedance matches the vacuum tube plate requirements. Check for any regional compliance certifications required for the end product.

Selection Notes

Select this model when a high-power 100W push-pull output transformer is required. Compare against the 1650E if lower power (15W) is sufficient. Consider the 1650PP or 1650HA only if different primary impedances like 6.6kCT are needed. Verify that the chassis mount style fits the enclosure constraints compared to PCB mount alternatives.

Part Context

The 1650R belongs to the Hammond 1600 series of audio transformers. This series includes various models tailored for different power levels and impedance configurations. While the 1650E offers 15W and the 1650PP provides 60W, the 1650R serves the higher power segment at 100W. All units share similar shielding and frequency response characteristics suitable for high-fidelity audio reproduction.