Pin Cushion Aircraft Speaker | 5.25 in, Round, 100 Hz–10 KHz, 12 W, 3.2 ΩThe A52FC aviation speaker delivers high quality audio and built to be a replacement speaker in commercial and general aircraft. This speaker features a 5. 25 inch diameter, a wide frequency range, and a flame retardant treated paper cone. Its space saving design allows for installations in tight enclosures, and will provide excellent voice clarity and performance under stringent altitudes and temperatures.