TP2050 Class-D Power Amplifier Board [50W + 50W]

[Agustr]

I was wondering if anybody had anything to say about this device. I am unable to find much info on the thing online.

I was also wondering if I understand this right. When wiring up the line in for the amp that then goes through a potentiometer (should I get 50kohm or 100kohm potentiometer?) that just attenuates the signal.

My concern is that if the amplifier is always at "full volume" any interference would then always be really amplified.

I may be forming my questions weirdly or even wrong and hoping you can help me.

oh and here is a link to the amplifier in question:
Yuan Jing Audio - TP2050 Class-D Power Amplifier Board [50W + 50W] - $24.50 - Class-D & T

Also if anybody can point out an off the shelf ac/dc converter to use with the project I have in mind. Preferably one that should be mounted inside the amplifier box.

Best regards,
Agustr.

 

[doctormord]

10k logA is just perfect. Any higher value will increase noise (whiper noise).

 

[Agustr]

Okay cool! And just plug it in between my amplifier and the audio source (phone)?

 

[doctormord]

Well, just like a pot is normally connected, yes.

Hot -> Input
Cold -> GND
Tip -> Output

 

[jonkun227]

I figured it's better to resurrect this thread than start a new one about the same amp.

What type of connector is used for the input on that board? I have the board, but I didn't notice when I ordered it that it didn't include one. Having the right one would simplify the box I'm making to hold it, but I don't know what to look for, having never purchased one of those separately (and I can't find ANY documentation on this board).

Thanks!

 

[Jerms]

They are usually "JST XH 3 pin" (Japan Solderless Technology, XH = 2.5mm pin pitch). You can get connector sets or tailed connectors on eBay etc.

J.

 

[FauxFrench]

If someone, like me, wants to try a cheap TK2050 board with class T modulation: JINSHENGDA assemble TP2050 classe D AMP Kit 50 W + 50 W carte amplificateur numerique de puissance Audio-in Amplificateur from Electronique on Aliexpress.com | Alibaba Group
They state "TK2050" = TC2000/2001 and TP2050 but the TP2050 is often a STA508 which makes no real difference.

 

[Kay]

link before don't work
STA508 TK2050 high power digitalverstarker bord 80 watt + 80 watt fieber HIFI verstarker bord-in Verstarker aus Verbraucherelektronik bei Aliexpress.com | Alibaba Gruppe
with this board you can remove the heat sink and see the STA-508