IRS2092 nois

[desislavov]

Hello ,
i have amplifier with IRS2092 , but when input pot ( 20 K log ) is from 0 to around 3 ( like in the picture ) and the song is on pause i have strange noise ...
If the pot is more than 3 to MAX there is no more noise , its quietly .
This is with CD player connect and without CD player ...
I try to change the potentiometer but with new is same ...

Can you point me , please from where this problem might be ??

Regards !

 

[nigelwright7557]

Is this an amp you built yourself or a bought in amp ?

 

[desislavov]

i do it my myself .
This is inside :
IRS2092S 500W Mono Channel Digital Amplifier Class D HIFI Power Amp Board w/ Fan | eBay

And 650w toroid + 4x4700uF

 

[nigelwright7557]

The irs2092 circuit is only about 3k3 input impedance.
What value pot did you use as volume control ?

 

[desislavov]

Now is 20K , i will try with 5K ....