Amplifier design for 2 Ohms without SMPS

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Hi everybody,

i'm planning to build an amplifier that can push up to 100 Watts (which would mean 14.1 Volts of output swing) or as much as the power supply voltage allows into a 2 Ohm load using a bridge configuration, running directly from low voltage supply without a SMPS. So it would have to withstand about 7 Amps. Are there any finished designs known to perform good? Otherwise, where should I start?
 
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