SM400104-1

Overview

The SM400104-1 is a general-purpose dynamic speaker manufactured by DB Unlimited. It features a 4-ohm impedance and a rated power handling of 5 watts, with a maximum power capacity of 6 watts. The unit delivers a sound pressure level of 100 dBA when tested at 1 watt per 100mm. Its frequency response spans from 150 Hz to 20 kHz, with a self-resonant frequency of 180 Hz. The speaker utilizes a polyester cone and employs top porting for acoustic output. It measures 40.00 mm in diameter and 21.50 mm in height, terminating via solder eyelets.

Feature Summary

• Top-mounted port design for directional acoustic projection
• Polyester cone construction for durability
• Solder eyelet termination for secure wiring

Applications

• General purpose audio reproduction
• Portable electronic devices requiring compact speakers
• Industrial equipment audio indicators

Procurement Notes

Verify the specific datasheet version before procurement to ensure compliance with current RoHS3 and REACH standards. Confirm that the solder eyelet termination matches your PCB or wire harness design. Check operating temperature limits against your environmental requirements. Ensure the 4-ohm impedance aligns with your amplifier output specifications. Validate physical dimensions fit within the designated enclosure space.

Selection Notes

Select this component when a round, top-port speaker is required for general audio tasks. The 4-ohm impedance suits standard low-voltage audio circuits. Consider the 100 dBA efficiency for applications needing moderate volume without excessive power. The polyester cone offers a balance of cost and performance. Verify that the 150 Hz lower frequency limit meets your bass response needs.

Part Context

This part belongs to the Dynamis series of high-fidelity speakers from DB Unlimited. The series focuses on delivering clear audio in compact form factors. The SM400104-1 represents a standard general-purpose option within this lineup, suitable for various consumer and industrial electronics where size and weight are constraints.

Replacement Considerations

No public confirmed substitute part numbers are available for this specific model.