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V.2012 PRO. Composite Audio amplifier
V.2012 PRO. Composite Audio amplifier
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Old 14th April 2014, 04:25 PM   #1
waso is offline waso  Russian Federation
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Location: Russia
Default Nataly V.2012 PRO. Russian Composite Audio Amplifier.

This is my best work on audio amps area. Based on composite idea, it has current protection, audio limiter, wires-compensation (aka Zero Drive System, Clean Drive), volume soft-rise for power on.
Specs:
Nominal Power at 4Ohm --400W
THD at nominal power in wide frequency range (20hz...20kHz) at nominal power - less 0,003%
THD at 1kHz 400W - less 0,001% (typically less 0,0008%)
Peak power - 500W.
Top-level sound & dynamic response guaranteed ))))
Project homepage (Russian forum) - V. 2012 Pro - ????????? ???????? Nataly - ????? ?? ????????????????
With respect from Russia.
Attached Images
File Type: gif v2012%20final.GIF (132.3 KB, 512 views)
File Type: jpg DSC00544.jpg (259.0 KB, 496 views)
File Type: jpg DSC00546.jpg (272.7 KB, 445 views)
File Type: jpg DSC00548.jpg (276.0 KB, 426 views)
File Type: jpg DSC00550.jpg (305.2 KB, 409 views)

Last edited by waso; 15th April 2014 at 10:43 AM. Reason: rename title
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Old 14th April 2014, 10:45 PM   #2
FEDOSOFF is offline FEDOSOFF  Russian Federation
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Very long path. Feedbacks. For home use this is not necessary.
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Old 15th April 2014, 03:47 AM   #3
waso is offline waso  Russian Federation
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Your opinion has the right to life. To the top of the mountain leads many roads
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Old 15th February 2015, 07:18 AM   #4
sajti is offline sajti  Hungary
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Quote:
Originally Posted by FEDOSOFF View Post
Very long path. Feedbacks. For home use this is not necessary.
For home application this is not necessary. However this amplifier looks like to build for professional (PA) application.

Sajti
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Old 15th February 2015, 02:34 PM   #5
potstip is offline potstip  Turkey
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Exclent product.
is it also work with 8 ohm?
Are you planing to sell pcbs?
How much it costs to build one except case and heatsink?
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Old 15th February 2015, 04:05 PM   #6
waso is offline waso  Russian Federation
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This is a top level product, much higher than the forum. Board to sell I wasn't going to, because I have no opportunities for their production, but the drawing files are not secret. The prices of components in Russia, the implementation of the amp cost $ 500. The amplifier is rated not less than 4 ohms, therefore, into 8 Ohms it will also work. Several hundred sets of printed circuit boards were sold in Russia.
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Old 15th February 2015, 04:15 PM   #7
potstip is offline potstip  Turkey
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So what is the price for the circuit boards + power supply circuit board?
Can you make shipment outside of russia?
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Old 15th February 2015, 04:23 PM   #8
waso is offline waso  Russian Federation
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I can provide a drawing of the PCB for manufacture, then You can decide where to make them. Printed circuit Board power supply, I think, not a problem. The reason is simple: the postage costs will exceed the cost of production and more profitable to make a separate order in China.
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Old 15th February 2015, 04:45 PM   #9
potstip is offline potstip  Turkey
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could you please send the last revision of circuit board design and bom list here if you are not going to make your own group buy so i can check price from china for group buy.
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Old 15th February 2015, 05:04 PM   #10
waso is offline waso  Russian Federation
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No problem.
Attention: in voltage amplifier and pre-driver stage was used 2sa1837\2sc4793, not 2sa1380\2sc3502. In pre-driver stage - one pair vs scheme tho pairs. It's a recommended change in scheme.
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