Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Why only 30W?
Most car radios are advertised to deliver 200 Whats. They actually deliver about 14 Watts RMS continuously to four (they have 4 channels) 4 ohm speakers over the 20Hz to 20kHz frequency band with low distortion.
If your car radio has four channels and your speakers are each 4 ohms then already the radio produces 56 Watts, or 200 Whats.
If you double the power then the sound is only a little louder. Ten times the power sounds twice as loud.
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