Hello Praba,
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Two possible mods might help:
1 - Add a 10uF capacitor across C75.? If electrolytic, the + goes to pin 1. (see 9.2.2 in the datasheet)
2 - Add the bass boost circuit described in the TI LM386 datasheet section 9.2.5.
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73
Evan
AC9TU
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