which amp schematic do you use?

chefo · 22nd April 2004, 02:27 PM

Hello to all!
I am new user, but the dream of getting the greatest audio in my car is very old.
Now I found enough time to get busy with it.

I thing that using the solution with SG3525 and four IRFP250N is good enough for the SMPS. (and very cost-effective!)

My question is: Which type of amplifier schematic you use in your projects?

Please, answer with some links or pics, because I didn't found anything interesting on the web.

I am eager to see your responces.

himanshuraval · 24th April 2004, 07:27 AM

hi
i have a schematic of this amplifier about 100watt i attach the file

himanshuraval · 24th April 2004, 07:30 AM

here is pcb of it

fr0st · 24th April 2004, 07:35 AM

I used Rod Elliots p3a with very good results.
Beat my mains powered gainclone (lm1875) hands down.

himanshuraval · 25th April 2004, 05:32 AM

hi fr0st
i have p3a scematic but i have not sim circuit for that so i can not buil it. than what about BR,SIM1 and SIM2

fr0st · 26th April 2004, 08:19 AM

If you read the artical closely those connections are for running the amp bridged (br) and his sound impairment monitor (sim's). Simply don't connect them.
You can even take out the resistors atteched to them if you plan on never using those features.

chefo · 28th April 2004, 01:22 PM

Hi, all!

himanshuraval, thank you for the schematic, I'll try it!

fr0st, can you please give me some link to read more for this p3a amplifier, I have a feeling that we talk in different languages

himanshuraval · 29th April 2004, 07:22 AM

hi chefo,
you can show the p3a construction detail with schematic here

http://sound.westhost.com/project3a.htm#top

chefo · 30th April 2004, 07:09 AM

OK, thanks!
Why you guys, don't use MOSFET's?
Is there something that I dont know about them?
I've heard, that most quality amlifiers are made with POWER MOSFETS in the end line.

himanshuraval · 4th May 2004, 06:56 AM

Quote:

Originally posted by chefo
OK, thanks!
Why you guys, don't use MOSFET's?
Is there something that I dont know about them?
I've heard, that most quality amlifiers are made with POWER MOSFETS in the end line.

hi chefo
I attach this design for your trial. Its very simple design and about 200w p/ch. I also download from web

22nd April 2004, 02:27 PM	#1
chefo diyAudio Member Join Date: Apr 2004 Location: Bulgaria	which amp schematic do you use? Hello to all! I am new user, but the dream of getting the greatest audio in my car is very old. Now I found enough time to get busy with it. I thing that using the solution with SG3525 and four IRFP250N is good enough for the SMPS. (and very cost-effective!) My question is: Which type of amplifier schematic you use in your projects? Please, answer with some links or pics, because I didn't found anything interesting on the web. I am eager to see your responces.

25th April 2004, 05:32 AM	#5
himanshuraval diyAudio Member Join Date: Feb 2004 Location: state:gujrat in india	hi fr0st i have p3a scematic but i have not sim circuit for that so i can not buil it. than what about BR,SIM1 and SIM2 __________________

29th April 2004, 07:22 AM	#8
himanshuraval diyAudio Member Join Date: Feb 2004 Location: state:gujrat in india	hi chefo, you can show the p3a construction detail with schematic here http://sound.westhost.com/project3a.htm#top __________________

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24th April 2004, 07:35 AM	#4
fr0st diyAudio Member Join Date: Dec 2002 Location: Australia	I used Rod Elliots p3a with very good results. Beat my mains powered gainclone (lm1875) hands down.

26th April 2004, 08:19 AM	#6
fr0st diyAudio Member Join Date: Dec 2002 Location: Australia	If you read the artical closely those connections are for running the amp bridged (br) and his sound impairment monitor (sim's). Simply don't connect them. You can even take out the resistors atteched to them if you plan on never using those features.

28th April 2004, 01:22 PM	#7
chefo diyAudio Member Join Date: Apr 2004 Location: Bulgaria	Hi, all! himanshuraval, thank you for the schematic, I'll try it! fr0st, can you please give me some link to read more for this p3a amplifier, I have a feeling that we talk in different languages

30th April 2004, 07:09 AM	#9
chefo diyAudio Member Join Date: Apr 2004 Location: Bulgaria	OK, thanks! Why you guys, don't use MOSFET's? Is there something that I dont know about them? I've heard, that most quality amlifiers are made with POWER MOSFETS in the end line.

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