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loud class AB amplifier

LM386 when operated from 6 volts can give sufficiently loud sound.

Would it be possible to design class AB amplifier which can give that
kind of loudness but with only 3 volts battery.

Can I just use single stage class AB amplifier or .... what.

Thank you in advance
C
 
E

Eeyore

LM386 when operated from 6 volts can give sufficiently loud sound.

Would it be possible to design class AB amplifier which can give that
kind of loudness but with only 3 volts battery.

You only have half the volts available so, even ignoring for a second device
saturation losses, at best you have a 6dB quieter sound.

To regain the required volume you could try 2 AB stages operating in 'bridged
mode'. This is where the 2 amplifiers operate in anti-phase and the speaker
connects between the 2 outputs.

Graham
 
J

John Fields

LM386 when operated from 6 volts can give sufficiently loud sound.

Would it be possible to design class AB amplifier which can give that
kind of loudness but with only 3 volts battery.
 
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