Strereo amp with Pre Amp

[sharkfish]

Dear Freinds.
i want to build a Stereo Amplifier using LM3886 Ic.
Please give me any Full Diagram PCB Lay out with Suitable pre amplifier.

Regards.

[Dxvideo]

My project which works in my living room now.

This is preamp module also have a bass boost option;

This is the power amp;

And the power supply;


Thats the full projects link (in Turkish). If you need more information please feel free to ask anything.
http://www.diyaudiotr.com/islecler/t....php?metinid=5
PS: This project is made of LM4780. But LM4780 is two LM3886 in one package.

[BWRX]

Hi Dx. The schematics look good. Any chance you could shrink the images by at least 50% for the sake of readability?

[Dxvideo]

Sorry I couldnt edit my msg. Here is the shrinked pics.,
Amplifier;

Preamplifier;

[sharkfish]

Thank you very much Dxvideo.

i will try it today.

Regards.

[Dxvideo]

Do you understand the S2 switches function on preamp module? It enables/disables bass boosting. So if you dont need bass boosting then you can ommit it.

[sharkfish]

Yes i have undestand it.
but LM4780 is not available in here so please can you give me LM3886 Steareo( i thing 4 ICS) amplifier Full Diagram with Suitable Pre Amp( Pre amp must be with Bass/Treble/Volume/Balance controls.
also i want to know whare can i get the Transformer for this amp(Round Type)

Regards.

[sharkfish]

also i want to know the transformer out put voltage amd ampier its 35volt 5ampier transformer for this amp?

regards.

[Dxvideo]

Hmm I afraid I have no preamp as you requested. However this preamp will work very fine. And I guess you wont need any extra controls for tone.
You can use that preamp for LM3886 also. And this is the circuit you can use;

And for the trafo, you can use 2 x 24v secondary and 200-250W at least for stereo.

[sharkfish]

ok then another quaction
what is the exact out put watts of LM3886 and LM4780

to biuld a Stereo Hi power amp i have to use LM4886 4ics or only two ics? coz many diagram i found on net some diagram show mono amp with 2 ics some diagram show stereo amp with two ics.
i want to biuld a maximum sound quality amp with ths ics. so please explaine me also i want to know witch ic is better to biulde hi quality hi sound amp LM3886 or LM4780

Regards.