These white 6.5” Pyle indoor surface mount PA wall speakers are compatible with 70 W PA systems. It delivers 35 watts max for a clean sound perfect in the home or office. 8 ohm impedance. Includes a 70 V transformer, mounting bracket, and installation hardware. 70 Volt Transformer Tapping at 10 / 5 / 2.5. Frequency Range: 130 Hz - 15 KHz. SPL(at 1W/1m): 92dB. Mounting Bracket & Hardware Included.