sureelectronics Tripath boards?

[cheric]

Another picture, since I did not know how to attach more than one.
The vol pot fits perfectly well where the red panel IR sensor used to be.

[dweekie]

Very nice Cheric. I love the big Obbligato caps. The picture makes them look tiny. That's an impressive first project.

[ArjenShenzhen]

I had an idea last time when i was at the beach listning to my micro speakers ( Class D 2X2 watt Eutech IC )

I thought, this can be better, but it should still be a small efficient amplifier as it will be battery powered.

So i went to the market and bought a small black housing and tried to fit one of my TA2024 PCB's in there

Ofcource, it didnt fit hehe so i had to remove 1 MM of PCB at both sides to make it fit

Also bought 3 X 3.7 volts 1000mA polymer cells and a protection PCB for charge and distcharge protection.

so 12 volts all together to power the PCB, 2 3.5 mm Connections, one input, one output simple switch on the front side, and a blue LED above the power switch.

The result is a light weight durable and well sounding ampifier
now i need to design and make some speakers, i aready have 2 5 watt speakers that look very nice, with rare earth magnets and a very nice suspention.... ill keep you guy's posted!

[ArjenShenzhen]

hereyago the back side!

[ArjenShenzhen]

This is the inside without batteries lucky me, those polymer batteries are very thin!

[dweekie]

Could you tell me the maximum voltage of the fully charged polymer batteries? I've been wanting to try them for a while.

[MikeHunt79]

Originally posted by dweekie
Could you tell me the maximum voltage of the fully charged polymer batteries? I've been wanting to try them for a while.

4.2v I think...

Arjen: Put me down for 4 tripath boards.

I'll send you an e-mail.

[toolkit]

Hi Arjen,

I may order some boards (although I have a large backlog of PCBs and kits yet to finish and task!) but how about selling on some of those cases and knobs? It seems to be hard to find good-looking cheap ones in the UK

Chris

[pincellone]

Originally posted by audio1st
Nice work Bongoman..
You should try some better input and feedback resistors, seem to make a difference with top end sparkle.
I've teamed mine up with a 12V , 6A power supply, also from SURE , turned up to 13.5V (so far)...
I have removed the second stage of the output filter and put a single cap across the speaker terminals at the moment, (haven't listened yet)
I really like these boards...

Audio1st

I know this is a newbie question, but I am...

I noticed that you put 3 large yellow capacitors in the speaker connectors and there is a blue cable connected on the right hand side of the box for ground.

Can you please let me know why those capacitors are needed, what values should I pick and where to connect them it's not easy to see this in the picture you provided, I barely see the connections and I'm not sure.

As you are not using a pot, do you need a preamp to use the amp?

Where should I connect the ground cable?

Please don't laugh... Thanks!

[pincellone]

Is there anybody that could answer me?