CMS-40288N

Speakers Overview

The CMS-40288N is a general-purpose miniature loudspeaker manufactured by Same Sky. It features an 8 Ohm impedance and a rated power of 2 W, with a maximum power handling of 3 W. The frequency response spans from 440 Hz to 20 kHz, with a self-resonant frequency of approximately 500 Hz. Acoustic performance includes a sound pressure level (SPL) of 85 dBA measured at 1W/1M. The unit utilizes a neodymium iron boron magnet and a cloth cone material. Its physical dimensions are 40.0 mm in length by 28.2 mm in width, with a maximum installation height of 11.8 mm. The speaker employs top porting and solder lug terminations.

Speakers Feature Summary

• Utilizes a neodymium iron boron magnetic structure for high efficiency in a compact form factor.
• Features a cloth cone diaphragm designed for general-purpose audio reproduction.
• Incorporates top porting configuration to optimize acoustic output directionality.

Speakers Applications

• Portable consumer electronics
• Medical devices
• Industrial control panels

Speakers Procurement Notes

Verify the specific datasheet version when ordering, as manufacturer specifications may be updated. Confirm that the solder lug termination style matches your PCB layout requirements. Ensure the operating temperature range aligns with your device's environmental conditions. Cross-reference the official Same Sky part number to avoid confusion with similar models in the CMS series.

Speakers Selection Notes

Select this component when a rectangular frame geometry fits the enclosure constraints. The 8 Ohm impedance suits standard amplifier outputs without requiring complex matching networks. Consider the 11.8 mm depth limit during mechanical design. The cloth cone material offers a balance between durability and acoustic neutrality suitable for voice and mid-range frequencies.

Speakers Part Context

This model belongs to the CMS series of miniature speakers from Same Sky. These components are engineered for space-constrained applications requiring reliable audio output. The series typically offers various impedances and power ratings to accommodate different driver capabilities. The CMS-40288N specifically targets applications needing a rectangular footprint with moderate power handling.

Speakers Replacement Considerations

Direct substitutes include other rectangular miniature speakers with identical 8 Ohm impedance and comparable SPL ratings. Verify that replacement units maintain the same 40x28mm mounting footprint and terminal type. Check if alternative cones or magnets affect the frequency response curve for critical audio applications.

Speakers FAQ

What is the recommended power handling for continuous operation?

The rated power is 2 W, while the maximum power handling is specified as 3 W.

How is the acoustic output directed?

The speaker uses a top porting configuration, directing sound outward from the upper surface of the unit.