Is FCC certification necessary for speaker transducers that are sold as assembled units in their housings? I found information on active speakers needing fcc certification, but what about passive ...
I built an audio amp out of the LM386 on a previous question. I when I have nothing connected, I picked up FM radio stations, as well as AM Very loud and clear. Why is this happening? Why AM and FM? ...
I have a Lepai LP-2020A+ audio amplifier and a König FM Pocket Radio. My problem is that the pocket radio works really well on its own, with the headphone plugged in, but when I connect the radio to ...
I have a tube radio that has really low output (I mean the sound is barely audible at full volume). Probably some capacitor in the LF amp failed. However, after I downloaded the schematic diagram, I ...
I'm having an argument with a classmate and we can't agree. He tells me that it's not possible for the amplifier of a radio station to amplify the input signal "instantaneously" (at the speed of ...