Kepo miniature speakers 8o kepo kp3040sp1 5838 the kepo kp3040sp1 5838 miniature speaker 8o 650 hz 20 no audible buzzes rattles when 253v sine wave signal is swept at frequency range the kepo speaker is a compact round size that is suitable for signal output in machines and other equipment where space is at a premiumtypical applications include voice and signal output in machines and other equipment both indoors and outdoors kepo kp3040sp1 5838 miniature speaker 30mm 8 ohm 0 7khz