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Old 21st November 2010, 12:41 PM   #241
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Quote:
Originally Posted by boytaho View Post
what do you think is the suitable driver for this amp on this site???
Crown - The Professional Choice

any suggestions?
I suggest to use this speakers projects.
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File Type: jpg APEX TOP.jpg (315.0 KB, 743 views)
File Type: jpg APEX PA Top Setup.jpg (429.2 KB, 673 views)
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Old 22nd November 2010, 12:19 AM   #242
boytaho is offline boytaho  Philippines
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what is the full power into mono 8ohms, 4ohms and bridge 8ohms, 4 ohms?
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Old 22nd November 2010, 03:42 AM   #243
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God gracious Apex, this is a great success. I made it and it works fine. Thanks you very much for the schematics and the PCB layout. Even tough I modified it a bit but it still retain the same artwork as yours. Thanks again. Below are the images:


I am using ExpressPCB for the PCB layout and the schematic. You can download it for free from this website: ExpressPCB - Free PCB layout and schematic software
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File Type: jpg images1.jpg (532.2 KB, 616 views)
File Type: jpg images2.jpg (513.3 KB, 375 views)
File Type: jpg images3.jpg (488.7 KB, 350 views)
File Type: jpg images4.jpg (538.3 KB, 263 views)
File Type: jpg images5.jpg (506.6 KB, 241 views)
File Type: jpg images6.jpg (691.3 KB, 302 views)
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File Type: zip 550W Power Amp.zip (46.5 KB, 295 views)
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Old 22nd November 2010, 08:31 AM   #244
tantang is offline tantang  Indonesia
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Hiii...sir, i have some transistor pnp A1943, what can to modification to pnp follower??? thank you...
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Old 22nd November 2010, 08:45 AM   #245
tantang is offline tantang  Indonesia
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plase care to share your scema quasi pnp output.

thanks
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Old 22nd November 2010, 08:47 AM   #246
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Quote:
Originally Posted by echobase View Post
God gracious Apex, this is a great success. I made it and it works fine. Thanks you very much for the schematics and the PCB layout. Even tough I modified it a bit but it still retain the same artwork as yours. Thanks again. Below are the images:


I am using ExpressPCB for the PCB layout and the schematic. You can download it for free from this website: ExpressPCB - Free PCB layout and schematic software
Nice work, 2N3773 on pictures are fake motorola!
Regards
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Old 22nd November 2010, 09:19 AM   #247
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Smile schematic for the preamp

Quote:
Originally Posted by apexaudio View Post
Nice work, 2N3773 on pictures are fake motorola!
Regards
Who care about fake! as as your design work! We got billions of them here in the market! Would you mind show me the schematic for the preamp please?

Best regard

Albert B.
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Old 22nd November 2010, 09:52 AM   #248
AndrewT is offline AndrewT  Scotland
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Originally Posted by echobase View Post
Below are the images:
more than 3MB for six pics.

When is the Forum going to stop this lunacy?
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Old 22nd November 2010, 10:45 AM   #249
djk is offline djk
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"Who care about fake! "

Fake parts are seldom as robust as original parts, I suggest you add a DC protect circuit.
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Old 22nd November 2010, 12:19 PM   #250
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Quote:
Originally Posted by tantang View Post
plase care to share your scema quasi pnp output.

thanks
See post #240,
Regards
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