I have made mini amplifier using LM386 and the sound is very clean....but when it comes to bass it hit sound like knocking on wood...tuck tuck tuck...what cause this? too high frequency or too low frequency? and how to fix it so that the bass will sound powerful and vibrating

 

Post the circuit diagram, it's possibly the low frequency response capacitor on pins 1,5.

 

Or better yet, not being facetious, forget this dinosaur of a device (which is way more trouble than it's worth - I know, we used these by the 100,000's years ago) look at something like the TPA4861 (http://www.ti.com/lit/ds/symlink/tpa4861.pdf). 5V operation, 1W output, shutdown pin, BTL output which means none of the giant caps needed with the '386. The only "downside" is it's SMD, but there are little adapter boards that can turn it into a DIP.

Good luck!

Mike Tripoli

 

LM386 cannot produce powerful bass.
For powerful bass production, you need power ( lots of it ) and appropriate woofer and the right cabinet to hit those low frequencies,

 

Hello,

It can also be that the powersupply is not stable during a bass shot.
That also can give stange effects on the sound.

Bertus

 

It could also be clipping.

 

All of the above.

1) LM386 is not meant for hi-fi sound.
2) Output capacitor is too low in capacitance.
3) Power supply is not holding up.
4) Signal amplitude is clipping.

 

Thanks for all the input...anyway i tested using earphone i can hear a decent bass sound in it...sound good now...thanks for all the ideas