What cause the bass circuit sound like hitting wood?

Thread Starter

dante_clericuzzio

Joined Mar 28, 2016
246
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
 

mtripoli3

Joined Mar 1, 2016
35
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
 

R!f@@

Joined Apr 2, 2009
9,919
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,
 

bertus

Joined Apr 5, 2008
22,290
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
 

MrChips

Joined Oct 2, 2009
30,983
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.
 

Thread Starter

dante_clericuzzio

Joined Mar 28, 2016
246
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
 
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