38mm 4 Ohm 3W Full-Range Mini Speaker Set

This set contains two 38mm-diameter full-range speakers, each rated at 4 ohms impedance and 3 watts RMS power handling. They reproduce sound from 500Hz to 20kHz with flat amplitude response in the midrange — suited for speech, tones, and synthetic audio in embedded systems. Enclosed in sturdy black plastic with single-cavity construction, they offer directional sound projection and mechanical stability. JST-PH 2.0mm connectors provide polarity-safe, low-profile wiring; 11mm wire leads are included for alternative termination methods. Dimensional tolerance is tightly controlled at ±1–3mm to support repeatable mechanical integration. The drivers are tested for compatibility with common low-voltage amplifier solutions used in Arduino, Raspberry Pi, and ESP32 ecosystems. Their compact scale enables placement behind perforated panels, inside robot joints, or within modular instrument casings — all while maintaining audibility at typical human interaction distances (0.3–2m). No additional crossover or filtering is required due to inherent full-range tuning. Frequently selected for STEM teaching kits, interactive museum exhibits, programmable toys, and compact audio visualisers — where reliability, ease of wiring, and predictable sonic behaviour are valued more than maximum volume or deep bass reproduction.