A homemade kit modified for fan cooling. This car power amp was rated at 100 W/channel into 8 ohms in the days when 100 W really meant it.
“Continue reading” for more details and photos.It was used in my Honda Civic for many years running from a 300 W 12 V / 240 V inverter. It powered a set of efficient large Cerwin Vega speakers with 12 inch woofers which took up all the space behind the front seats.
Of course power amps these day are mostly class D and have efficient high speed switching to switch the power many times to build up a wave form.
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Photo Date: 2003