LM1875 Ebay dual channel pcb question

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@AndrewT does this helps?
 
C9, C10 should have much higher values if you care to have some bass output. The BOM indicates those as 1uF but I would go even higher. Also looking at the schematic and the PCB I do not see small value decoupling capacitors next to the IC's power pins. You need them in addition to the 22uF electrolytics mentioned in the BOM for better performance.

Regards,
Oleg
 
I´d get the cheapest mono-kit, the one with the little blue pcb. The components are ok and the layout is really tight. No copper where it shouldn't be. Two mono- kits are not even 5€/$. As transformer I'd take a 120VA (or more) toroid with 18 - 0 - 18Volts. For the first try a single transformer should do it for both amps. If you like what you hear and want more, you can upgrade 'till your purse is bleeding.

Circuit Board Handmade Mono Channel Stereo Audio HIFI Amplifier Module LM1875T 735031963917 | eBay

YouTube

It was my 1st try on diy- audio and I was addicted from the first sound/ second.
 

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I bought this and assemble it. So far first time power up and it works. Being running for many hours. Using cheap parts from my local area stores here. All parts from china except the C1 and C4 I bought from RS. Panasonic caps.

The sound quality are not bad.
 

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i have the verry same board. My issue with this is: i hear random pops in my speakers. Even when i flick cerain lightbulb switch, or the fridge starts. Any ideas on the cause?

Buying off ebay is always a risk.
If its not coming from China then its likely imported from China and sold in UK.
My experiences of Chinese goods has been very poor.
Transistors that blow up if you get a glitch on the mains because their breakdown voltage is low due to them being fakes.
Find a good reputable dealer in the UK and buy from them.
 
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