In order to prevent noise in the first working moments of the amplifiers and to prevent damage to the speaker, the control element is the standard in the sound systems π In fact it can be called the timing circuit, but so far I have only used the amplifiers in a circuit that I have used in my circuits, as well as a few more delayed timer circuits
Our first circuit is a bit more complicated than other samples I installed on the LM741 Opamp, but I have tested in the pcb files
Circuit LM741 can set the pick up time relay board 10k TrimpotlarΔ± on the chart, you can use two ball got istersebiz a 12 volt relay Use Rule proper amperage by the power of your amp PCB File Speaker Delay Circuits