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Old 30th November 2013, 11:45 AM   #1
netiks is offline netiks  Azerbaijan
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Default What do You think about this amp 3000w

Hello Everybody
What do You think about this amp?
Does anyone have schematics and pcb layout for this amp
It suposed to have 1500w on 8 ohms and 3000w on 4ohma mono
Output transistors NJW0302,NJW0281 but can work with 2SC5200,2SA1943
28 output transistors
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Old 30th November 2013, 12:25 PM   #2
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What amp ???
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Old 30th November 2013, 12:48 PM   #3
netiks is offline netiks  Azerbaijan
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Default this amp

sorry for not uploading pictures first time
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File Type: jpg 3000w 4ohm.jpg (369.9 KB, 346 views)
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Old 30th November 2013, 01:54 PM   #4
Krisfr is offline Krisfr  United States
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Very interesting, more photos? Schematic? Specs?
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Old 30th November 2013, 02:10 PM   #5
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Why do you need 3000 watts and where would you plug it in?

Mike
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Old 30th November 2013, 02:26 PM   #6
netiks is offline netiks  Azerbaijan
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Quote:
Originally Posted by Michael Bean View Post
Why do you need 3000 watts and where would you plug it in?

Mike
Hi Mike I would probably plug it in the wall outlet and big speaker/speakers

If You think about power consumption Im from Europe so 240V power outlet 12 amps would be enough power but in the US 110 28amps to many amps draw

If You think thats too much power I installed 2x2000w rms amplifiers in my car


Im looking if anyone have pcb layout and schematics of this amp?
I saw it on Aliexpress but they ask 85$ FOR PCB only OUCH
Thanks

Last edited by netiks; 30th November 2013 at 02:37 PM.
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Old 30th November 2013, 03:48 PM   #7
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There are watt ratings and there are other watt ratings. For one thing some car amps use 1 ohm speakers because the rail voltage is so low, 12 VDC. For speakers that make music that can sound like wooden instruments sometimes, the rating is more often 4 ohms or 8 ohms. Then there is the time the 3000 watts can be produced.
I'd like to see your 2000 w RMS car amp run into some resistors for acouple of hours and measure the heat sink temperature.
By contrast, PA amps from Peavey, Crown, QSC, will deliver the advertised watts, usually into 4 ohms, all night and tomorrow, too.
This amp has enough output pairs to be interesting, but without schematics or heat sink design, no opinion. The heatsink and fan design has a lot to do with long term power rating.
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Old 30th November 2013, 04:08 PM   #8
netiks is offline netiks  Azerbaijan
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Default amp

this is one of my car amps 2000rms class D mono 1ohm stable
uploded picture

Yes I would like to see schematics and pcb layout too of that chinese amplifier with 28 output transistors i think it would run cool on 1500rms at 8 ohm it has ic ne5532

If anyone has Cirucit and pcb layout please upload
thanks
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Old 30th November 2013, 04:19 PM   #9
netiks is offline netiks  Azerbaijan
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Quote:
Originally Posted by indianajo View Post
There are watt ratings and there are other watt ratings. For one thing some car amps use 1 ohm speakers because the rail voltage is so low, 12 VDC..
You are wrong car amps use SMPS power supply which can make from 12volts +/- 100volts

Half of the amp is SMPS and the other Half is amplifier see on the picture
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Old 30th November 2013, 04:20 PM   #10
Vostro is offline Vostro  Madagascar
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I guess I understand what you saying indianajo, but the rail voltages in a car amp is Not 12V.
Many car amps are not rated in rms, but it's undeniable that good car amps are extremely powerful,
And many installations are so powerful that it's unhealthy to listen to them at full volume in the car.
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