TEBM65C20F-8

Overview

The TEBM65C20F-8 is a Balanced Mode Radiator (BMR) audio driver manufactured by Seltech. It features an extended frequency response ranging from 60 Hz to 20,000 Hz with a self-resonant frequency of 104 Hz. The unit has an impedance of 8 Ohms and an efficiency of 81.00 dBA. Its physical dimensions are 108 mm in diameter by 56.82 mm in thickness. This component combines bending wave technology with conventional piston motion to achieve wide directivity.

Feature Summary

• Combines bending wave and piston drive mechanisms for extended frequency response
• Provides wide 180-degree directivity compared to conventional drive units
• Utilizes a paper cone material for acoustic performance

Applications

• High-fidelity full-range speaker systems
• Audio drivers requiring wide dispersion characteristics
• Balanced Mode Radiator (BMR) enclosure designs

Procurement Notes

Verify the manufacturer designation carefully, as this component is technically produced by Tectonic Acoustics but may be listed under Seltech in certain distributor catalogs. Confirm the specific datasheet version matches the required electrical parameters, particularly the 8 Ohm impedance and 108mm diameter, before finalizing procurement orders.

Selection Notes

Select this driver when wide dispersion and extended low-frequency response are prioritized over compact size. The 8 Ohm impedance requires compatible amplifier output stages. Ensure the mounting depth of approximately 57mm fits within the intended cabinet design constraints.

Part Context

This component belongs to the Tectonic BMR series, known for integrating balanced mode radiator technology into standard speaker driver form factors. It serves as a full-range solution that reduces the need for complex crossover networks by covering a broad audible spectrum through its unique diaphragm movement.

Replacement Considerations

Direct substitutes include other 3-inch BMR drivers with similar 8 Ohm impedance and frequency ranges. Verify dimensional compatibility, specifically the 108mm outer diameter and mounting hole patterns, before considering alternative models.