CDS-4528-44SP

Overview

The CDS-4528-44SP is a rectangular micro-speaker manufactured by Same Sky. It features a 4 Ohm impedance and a rated power of 4 W, with a maximum power handling of 3 W. The frequency range spans from 200 Hz to 20 kHz, with a self-resonant frequency of approximately 200 Hz. The unit delivers a sound pressure level of 84 dB at 1W/1M. Dimensions are 45.2mm x 45.2mm x 28.1mm, utilizing a paper/polyurethane cone and Nd-Fe-B magnet.

Feature Summary

• Rectangular frame design optimized for compact audio applications
• Utilizes Neodymium-Iron-Boron magnetic structure for high efficiency
• Paper or polyurethane composite diaphragm construction
• Top port configuration for direct sound projection

Applications

• Medical devices requiring miniature audio output
• Portable electronic equipment
• General purpose audio transducers in constrained spaces

Procurement Notes

Verify the specific suffix and revision against the official Same Sky datasheet before ordering. Confirm that the 4 Ohm impedance and 84 dB sensitivity match the system requirements. Check for any recent Product Change Notices (PCN) regarding material updates or manufacturing location changes. Ensure compatibility with the intended enclosure design given the 28.1mm depth.

Selection Notes

Select this component when a rectangular form factor is required for space-constrained designs. The 4 Ohm impedance suits standard low-voltage amplifier outputs. Consider the 84 dB sensitivity for applications requiring moderate acoustic output without excessive power consumption. Verify thermal management needs as the rated power is 4 W.

Part Context

This speaker belongs to the CDS series of rectangular micro-speakers from Same Sky. The series offers various sizes and impedances tailored for portable electronics. The CDS-4528-44SP specifically provides a balance between size and acoustic performance using a square frame geometry.

Replacement Considerations

Direct substitutes may include other 4 Ohm rectangular speakers from Same Sky such as the CDS-40 series if dimensions allow. Cross-brand replacements require matching impedance, sensitivity, and mounting hole patterns. Verify voice coil diameter and magnetic gap compatibility.