SP-1511L-1

Overview

The SP-1511L-1 is a rectangular dynamic speaker unit manufactured by Soberton Inc., designed for mobile telephone applications. It features an 8 Ohm impedance and a rated noise power of 500 mW, with a maximum short-term power handling of 800 mW. The device operates within a frequency range of 300 Hz to 8 kHz and delivers an average sound pressure level of 82 dB SPL at 1V in free air. Constructed with a PEEK cone and Nd-Fe-B magnet, it utilizes top porting and pad termination. Its compact dimensions are 15.00mm x 11.00mm with a maximum seated height of 4.00mm.

Feature Summary

• Utilizes a polyether ether ketone (PEEK) cone and neodymium iron boron magnet for structural integrity and magnetic efficiency.
• Features top porting design optimized for specific acoustic enclosure requirements.
• Engineered with pad termination for direct surface mounting on printed circuit boards.

Applications

• Mobile telephone audio output
• General purpose portable electronic devices
• Compact consumer electronics requiring small form factor speakers

Procurement Notes

Verify the specific suffix designation when ordering, as Soberton uses suffixes to denote variations in power handling or frequency response within the SP-1511 series. Confirm that the required impedance matches the 8 Ohm specification provided in the datasheet. Ensure the application environment accommodates the specified maximum power ratings to prevent thermal damage. Check that the physical footprint of 15.00mm x 11.00mm fits the target enclosure constraints.

Selection Notes

Select this component when a rectangular form factor and top porting are required for the acoustic design. The 8 Ohm impedance is suitable for standard low-voltage audio amplifier outputs. Consider the 300 Hz to 8 kHz frequency range against the desired audio reproduction spectrum. The PEEK cone material offers durability suitable for mass-produced consumer electronics. Verify that the pad termination method aligns with the assembly process capabilities.

Part Context

This part belongs to the Soberton SP Series of micro speakers, which are specifically engineered for mobile communication devices. The series includes various models differentiated by power ratings, frequency ranges, and physical dimensions. The SP-1511L-1 represents a mid-range option within this lineup, balancing size constraints with adequate acoustic output for voice and limited music playback in handheld devices.

Replacement Considerations

Direct substitutes may include other Soberton models from the SP-1511 family, such as the SP-1511L or SP-1511S-5, provided their electrical parameters and mechanical dimensions are compatible. Cross-manufacturer replacements require careful verification of impedance, sensitivity, and mounting hole patterns to ensure functional equivalence without redesigning the acoustic chamber.

FAQ

What is the self-resonant frequency of the SP-1511L-1?

The self-resonant frequency is approximately 850 Hz in free air conditions.

How is the sound pressure level measured for this component?

The SPL is measured at 1V input in free air, averaging across frequencies from 0.7 kHz to 2.0 kHz.