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Old 10th December 2009, 08:11 AM   #1
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Exclamation Diy Solid state amp, designs

Hello all i am looking for hi power amplifier designs or sites that have instructions on designing a High wattage mosfet amp either with high rail voltages or using bridgeing and parralleling of amps to drive upto 500watt @ 2ohm
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Old 10th December 2009, 01:18 PM   #2
jerryo is offline jerryo  Isle of Man
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I think you need to spend some time with the "search" facility on this forum as there is an enormous amount of info available for what you might be looking for.
Also try "Eliot Sound Products", which is another great site; and he has pcb's available for his design's and some very informative articles.
Have fun researching.
Jerryo
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Old 10th December 2009, 01:46 PM   #3
AndrewT is offline AndrewT  Scotland
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Hi,
look up Quasi's original thread. It takes you through the design development of that series of amplifiers.
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Old 10th December 2009, 05:31 PM   #4
Gordy is offline Gordy  United Kingdom
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Click these...

Project 117
ESP Projects Pages - DIY Audio and Electronics
ESP Projects Pages - DIY Audio and Electronics

: )
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Old 10th December 2009, 05:48 PM   #5
wahab is offline wahab  Algeria
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Quote:
Originally Posted by Gordy View Post
Click these...

Project 117
: )
you re putting his life at risk..!!..

highpower3rpc, be aware that high power amplifier are very risky,
i can only advice you to read and re read the procols used to
build and test those dangeourous items...
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Old 11th December 2009, 09:34 AM   #6
djk is offline djk
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Build project 117 with 5 pair of outputs with a 50-0-50 500VA~800VA transformer, that will get you 500W/2R.

Project 117
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Old 11th December 2009, 10:04 AM   #7
ratza is offline ratza  Romania
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At that power I would recommend class D instead of AB. Anyway, what are you going to do with such a thing?
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Old 11th December 2009, 10:33 AM   #8
AndrewT is offline AndrewT  Scotland
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a 50+50Vac 1200VA 3.5% regulation transformer with +-75mF smoothing and 6pair of MJ21193/4 should give 450W into 4r0 and 800W into 2r0 and drive a 60degree phase angle load if you can keep the heatsink (& Tc) cool.

4pair and a 700VA 4% transformer with +-45mF will give >440W into 4r0.
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Last edited by AndrewT; 11th December 2009 at 10:36 AM.
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Old 11th December 2009, 01:53 PM   #9
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Originally Posted by ratza View Post
At that power I would recommend class D instead of AB. Anyway, what are you going to do with such a thing?
yeah i was hoping for help on finding a good class D amp
problem is i just didn't know where to start as there is so much information on this forum
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Old 14th December 2009, 08:08 PM   #10
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does anyone have a board layout for project 117??

many thanks harry
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