AS04008MS-R Equivalent & Substitute Parts

Part Overview

The AS04008MS-R is an 8 Ohm general purpose speaker manufactured by PUI Audio, Inc., rated for 400 mW power handling with a frequency range of 800 Hz to 5 kHz. This speaker features a top port configuration with a round, square frame design and achieves 90 dB SPL efficiency at 1W/1M testing conditions. The product is currently obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and component procurement.

Substiute Parts

AS04008MS-R

PUI Audio, Inc.In Stock: 845AS04008MS-R Datasheet

Current PartRFQ

GA0506M

CUI DevicesIn Stock: 1695GA0506M Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the AS04008MS-R is determined by the following critical parameters:

• Impedance Match: 8 Ohms (electrical compatibility with circuit design)
• Port Location: Top (mechanical fit and acoustic design)
• Shape Configuration: Round, Square Frame (form factor and mounting compatibility)
• Termination Type: Solder Eyelet(s) (connection method compatibility)
• Power Handling: Rated power and maximum power ratings must support the application requirements
• Frequency Response: Operating frequency range must cover the intended audio bandwidth

The GA0506M from CUI Devices meets the core electrical and mechanical substitution criteria: matching 8 Ohm impedance, top port location, round square frame configuration, and solder eyelet termination. Both speakers support the same maximum power rating of 500 mW and operate within compatible frequency ranges for general purpose audio applications.

Parameter Comparison

Engineering Selection Recommendations

The GA0506M is an active product with current manufacturing support and ROHS3 compliance, providing supply chain continuity for the obsolete AS04008MS-R. Both components share identical impedance, port location, frame shape, and termination specifications, establishing direct electrical and mechanical compatibility.

Design considerations for substitution:

• Dimensional Variance: The GA0506M is larger (50mm vs 40.50mm) with increased height (18.50mm vs 15.70mm). Mechanical fit verification in the target enclosure is required.
• Efficiency Difference: The AS04008MS-R operates at 90 dB SPL versus 79 dB SPL for the GA0506M. Applications requiring higher acoustic output may require circuit-level power adjustments.
• Rated Power: The GA0506M has a lower rated power specification (250 mW vs 400 mW), though both support 500 mW maximum. Operating point selection should account for this difference.
• Frequency Response: The GA0506M extends frequency coverage to 500 Hz and 10 kHz, providing broader bandwidth than the AS04008MS-R (800 Hz to 5 kHz).

Frequently Asked Questions (FAQ)

Q: Can the GA0506M directly replace the AS04008MS-R without circuit modifications?

A: Electrical substitution is direct due to matching 8 Ohm impedance and identical termination. Mechanical fit must be verified due to dimensional differences. Acoustic performance will differ due to efficiency variance.

Q: What is the impact of the 11 dB efficiency difference between these speakers?

A: The AS04008MS-R produces 11 dB higher sound pressure level at equivalent input power. Applications sensitive to acoustic output require either increased drive power or acceptance of reduced volume with the GA0506M.

Q: Are there size constraints I should consider?

A: The GA0506M requires additional mounting space: 9.5mm larger in length and width, and 2.8mm greater height. Verify clearance in the target application before substitution.

Q: Do both speakers meet current compliance requirements?

A: Both components are REACH Unaffected. The GA0506M carries ROHS3 compliance certification, while the AS04008MS-R compliance status is not specified. For new designs, the GA0506M provides documented regulatory compliance.

Q: What is the frequency response difference between these speakers?

A: The AS04008MS-R operates 800 Hz to 5 kHz. The GA0506M operates 500 Hz to 10 kHz, providing extended low-frequency response and additional high-frequency bandwidth.

Q: Is the GA0506M suitable for continuous 400 mW operation?

A: The GA0506M has a rated power of 250 mW with 500 mW maximum. Continuous operation at 400 mW exceeds the rated specification. Operating within the 250 mW rated power ensures design margin.