808A

Description：AUDIO XFMR
Series：-
Mfr：Hammond Manufacturing
Package：Bulk

SKU:09b3fc362d91 Category: Audio Transformers Brand: Hammond Manufacturing

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Product introduction

Product Detailed Parameters

Description：AUDIO XFMR
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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808A

Overview

The Hammond Manufacturing 808A is a broadcast audio transformer designed for microphone or mixer connections to single-ended or push-pull grid circuits. It operates within a frequency range of 50 Hz to 15 kHz and features shielded construction to minimize interference. The primary winding offers selectable impedances of 50 ohms or 200 ohms, while the secondary provides options of 600 ohms or 2.4 kohms. Maximum DC current is rated at 600 uA. The unit measures 44.5 mm in length, 31.8 mm in width, and 65 mm in height.

Feature Summary

Designed for broadcast applications connecting microphones or mixers to amplifier grids
Shielded construction reduces electromagnetic interference
Selectable primary impedance configurations for versatile circuit integration
Encapsulated design ensures mechanical stability

Applications

Microphone input stages in broadcast equipment
Mixer output connections to tube amplifier grids
Single-ended to push-pull grid signal conversion
Professional audio signal isolation

Procurement Notes

Verify that the specific variant ordered matches the required primary and secondary impedance combinations (50/200 ohm primary; 600 ohm/2.4 kohm secondary). Confirm lead wire presence as specified in the product description. Ensure the shielding type aligns with noise-sensitive broadcast environments. Cross-reference the manufacturer part number 808A with official datasheets to confirm RoHS compliance status and physical dimensions before finalizing procurement.

Selection Notes

Select this component when interfacing low-impedance sources like dynamic microphones with high-impedance tube grid inputs. The dual primary impedance option allows adaptation to different source outputs. The dual secondary impedance facilitates matching to various load requirements. Consider the physical footprint constraints given the 65 mm height. Verify that the maximum DC current rating of 600 uA is sufficient for the bias conditions of the connected grid circuit.

Part Context

This component belongs to the Hammond 800 series of audio transformers, which are specialized for professional broadcast and studio applications. Unlike general-purpose signal transformers, these units are optimized for voice frequency ranges and tube amplifier interfaces. The series includes variants such as the 807A for dynamic microphones and the 842A for plate-to-line connections, each tailored to specific impedance transformation needs within audio signal chains.