Hammond Manufacturing 801 Audio Transformer Equivalent & Substitute Parts

Part Overview

The Hammond Manufacturing 801 is a broadcast quality audio transformer designed for chassis mount applications. It features 200 ohm impedance matching on both primary and secondary windings with a frequency response of ±0.5dB across the 50Hz to 15kHz audio band. The part is classified as obsolete, making identification of compatible substitute components essential for ongoing system maintenance and repair operations.

Substiute Parts

801

Hammond ManufacturingIn Stock: 1012801 Datasheet

Current PartRFQ

801A

Hammond ManufacturingIn Stock: 632801A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The Hammond Manufacturing 801A serves as a direct substitute for the 801 based on the following critical parameters:

Matching Parameters:

• Frequency range: 50Hz ~ 15kHz (identical)
• Frequency response: ±0.5dB (identical)
• Power level: 15dB (identical)
• Mounting type: Chassis Mount (identical)
• Transformer classification: Audio transformer for impedance matching
• RoHS3 compliance (identical)
• Manufacturer: Hammond Manufacturing (same manufacturer, 800A series)

Substitution Basis: The 801A maintains the core audio transformer functionality with equivalent frequency response characteristics and power handling specifications. Both parts are designed for chassis mount audio applications within the broadcast quality category. The 801A is currently in active production status, providing availability where the obsolete 801 is no longer obtainable.

Parameter Comparison

Engineering Selection Recommendations

The Hammond 801A is the appropriate substitute for the obsolete Hammond 801 based on maintained electrical performance specifications. Both transformers meet ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for applications requiring these certifications.

The primary consideration for substitution is the termination style difference: the 801 uses solder lugs while the 801A uses wire leads. Installation procedures must accommodate this change in connection methodology. Additionally, the 801A has a reduced seated height of 1.250" compared to the 801's 2.559", which may affect mechanical fit in space-constrained chassis applications.

The electrical parameters—frequency response, power level, and impedance matching capability—remain equivalent between both parts, supporting functional interchangeability in audio transformer applications operating within the 50Hz to 15kHz band.

Frequently Asked Questions (FAQ)

Q: Can the Hammond 801A directly replace the Hammond 801 in existing equipment?

A: The 801A provides electrical equivalence for audio transformer functionality. Physical installation requires evaluation of termination style compatibility (solder lug vs. wire leads) and chassis height clearance (2.559" vs. 1.250" seated height).

Q: What are the critical parameters for audio transformer substitution?

A: Frequency range, frequency response tolerance, power level rating, impedance matching values, and mounting configuration determine substitution validity. The 801 and 801A match on all these parameters.

Q: Does the termination style change affect electrical performance?

A: Termination style (solder lug vs. wire leads) is a mechanical interface consideration and does not alter the transformer's electrical characteristics or frequency response.

Q: Are both parts compliant with current environmental regulations?

A: Both the Hammond 801 and 801A are ROHS3 compliant and REACH unaffected, meeting current environmental standards.

Q: Why is the 801A smaller in height than the 801?

A: The 801A represents a redesigned version in the 800A series with optimized physical dimensions while maintaining equivalent electrical performance specifications.

Q: What is the impedance configuration for these transformers?

A: Both transformers feature 200 ohm impedance on primary and secondary windings with 50/50 impedance matching capability for balanced audio applications.