Feature	Description
Brand	JBL Professional
Model	IWS05 (referenced) / ICS05 series (5.25″ full-range ceiling speaker)
Driver Size	133 mm (5.25-inch) full-range driver
Effective Frequency Range (-10 dB)	≈ 85 Hz – 20 kHz
Sensitivity / Sound Pressure Level	89 dB @ 1W / 1m (@1kHz)
Nominal Impedance	8 Ω :contentReference[oaicite:5]{index=5}
Maximum Driver Power Capacity	8 W (full-range driver)
Transformer Taps	100 V: 6W, 3W, 1.5W • 70 V: 3W, 1.5W, 0.8W
Cut-Out Dimension	Approx. 145 mm (diameter)