This is Darligton transistor Solid stage amp. I found this in a Turkish Amp Book. i tried it.
Super responce with about 300W power.
It drive my 12" sub to provide powerfull and shaking bass.
have a look to schem. and proto pics.






hope you like it

Specs? THD? Response?

Looks nice and simple. Parts list might be nice too.

Can we build this at any wattage?

Specification for the AMP was in Turkish. But i find it very quite and clear beats. Since i am using it as Subwoofer amp.
I part list and schem. will be posted soon.

Yes you can increase it's power by adding two darlington pair(TIP142/147). and increasing supply voltage.

**** caustion :- since my drive transistor(TIP41c /42c) can handle 80V so i run it on +- 35V DC

replace (TIP41c /42c) with BD911/912 which can handle 100v and run with +-45 VDC
you can get up to 450W.

how much replace (TIP41c /42c) with BD911/912 will effect THD i dont know.. I have not tried it ..

Thanks for your reply
Rakesh Sharma

Nice layout. Is there a copy of the schematic with part values? -thanks

hi rakesh_sharma23

Nice!!!!! Amp I want one of these

But Is there a copy of the schematic with part values, and conections, and more power supply info.
the subwoofer box is "diy" to? you have a picture?

Best regards!!!

For the PSU, this will be fed from AC power, looks like straight from the transformer, I'd say probably 42V, given the spec of the TIP147 and TIP142 output devices. That's going to give +/- 60VDC after rectification and filtering. (It certainly won't be more than this, considering that the secondary filter caps are rated for 63V. For safety reasons, I'd probably keep my AC voltage to about 35VAC, for +/- 50VDC rails.

It looks like a relatively simple design. I see no current limiting, short circuit protection, or even a way to adjust the bias current. (Though if I had to guess, I'd figure that the 3 diodes in the top center of the board are probably doing this via the voltage drop.)

Nice amp! Let me know how it turns out. I was thinking of using this http://www.41hz.com/shop/item.asp?catid=13&itemid=45 but if your plans work out well, I might change my plans. Let me know!

David

hey it may be a little late but if you ever want translating i can translate what you need just leave me them with a mesage,

ps: i am from Turkey. That's why i say i can translate.

Very cool. I wish you could take pictures of what it sounds like. What was the total price of all those components?