4PCS 4 Inch Piezo Horn Tweeter Kit

A complete kit of four 110 × 110 × 83 mm square piezoelectric horn tweeters in black PP housing. Each unit features a capacitive impedance signature (4–8 Ω nominal, megaohm static), meaning traditional impedance checks are ineffective — operation depends on voltage compliance, not power matching. Actual current draw is milliampere-level (3–5 W), enabling high-output performance with low electrical load. Voltage resistance is 12–18 V RMS. Sound pressure reaches 100 dB at 1 metre. Frequency response extends from 2.2 kHz to 27 kHz. Dimensions include ±1–3 cm tolerance. Colour may vary slightly between screen and physical unit. Package contains four tweeters only — no cables, brackets, or amplifiers included.