Technical Specifications Summary

This document provides key Thiele/Small parameters for a loudspeaker driver, essential for understanding its performance characteristics and designing appropriate enclosures.

Electrical Parameters

• Re (DC Resistance): 4.8 Ohms - Indicates the resistance of the voice coil.
• Le (Voice Coil Inductance): 0.7 mH at 1 kHz and 0.45 mH at 10 kHz - Reflects inductive reactance affecting high-frequency response.

Mechanical Parameters

• Fs (Resonant Frequency): 39.5 Hz - The frequency at which the driver naturally resonates.
• Mms (Moving Mass): 0.130 kg - Total mass of the moving parts including air load.
• Cms (Compliance): 0.144 mm/N - Suspension compliance indicating suspension softness.
• Xmax (Maximum Linear Excursion): ±8 mm - Maximum linear cone movement without distortion.

Acoustic Parameters

• Vas (Equivalent Compliance Volume): 159 liters - Volume of air having the same compliance as the driver suspension.
• Sd (Effective Piston Area): 0.0880 m² - Radiating surface area of the cone.

Quality Factors

• Qms (Mechanical Q): 4.2 - Mechanical damping of the driver.
• Qes (Electrical Q): 0.29 - Electrical damping related to the motor system.
• Qts (Total Q): 0.27 - Overall damping combining mechanical and electrical factors.

Motor Strength

• BL (Force Factor): 22.4 Tesla·meters - Indicates the strength of the motor driving the cone.

Summary: These parameters define the driver’s resonance, damping, mechanical limits, and motor strength, which are critical for enclosure design and predicting acoustic performance. The relatively low Fs and high Vas suggest suitability for bass applications, while the Qts value indicates a driver that can be used in sealed or vented enclosures depending on design goals.