2 Kw Audio Frequency Power Amplifier Design - Electronic Circuits Projects Diagrams Free

Hadeed Ahmed Sher · 28th July 2008, 01:47 PM

HI,
Can any one guide me to a good tutorial of designing a 2kw Audio frequency Class D power Amplifer.
Any Circuit diagram or application note.
Regards

**Nigel Goodwin** · 28th July 2008, 01:55 PM

Quote:

Originally Posted by Hadeed Ahmed Sher

HI,
Can any one guide me to a good tutorial of designing a 2kw Audio frequency Class D power Amplifer.
Any Circuit diagram or application note.
Regards

You can buy them far cheaper than you could make one, check out the Behringer ones for well specified inexpensive examples.

You are unlikely to find any such tutorial, or many working home made designs.

Mikebits · 28th July 2008, 09:01 PM

2KW amp? Holy hearing loss Batman! Why so much power, do you really need that much power?
Is this for a guitar amp?
Maybe you can build a Tube amp, Lots of web sites with tube amp schematics. I found a 400W amp at this site.
http://www.drtube.com/guitamp.htm

I never built any of these so I do not know the quality of these designs.

saturn1bguy · 28th July 2008, 09:04 PM

Quote:

Originally Posted by Mikebits

2KW amp? Holy hearing loss Batman!

Mike, you're killing me here! :-)

(Your eyes have truly been opened to all sorts of things, haven't they?)

Torben · 28th July 2008, 09:38 PM

This reminds me of Rod Elliott's infamous Project 117. Even the author recommends that nobody should ever try to build the thing.

A couple of my favourite quotes from the article:

Quote:

I know that no speaker I have (or am likely to ever have) can take that much power, and the amp would be a waste of money. Should someone be silly enough to pay me the AU$12,000 I would charge to build a mono version of the amp, then I would happily do so. So, I am confident that it will work as described, but it will almost certainly never be built by me. I hope that my readers share my pragmatism. :-)

Quote:

The power supply needed for an amp of this size is massive. Grown welding machines will look at it and cry.

Torben

Mikebits · 28th July 2008, 10:06 PM

Cool article Torben. I like this quote from the article.

Quote:

since the only people who should even attempt building an amp of this power should be very experienced with high power systems. If this does not describe you, then don't even think about it.

audioguru · 29th July 2008, 04:07 AM

The Jackhammer is a 22" subwoofer rated at 6.000W RMS. It weighs 369 pounds.
There is a funny video where some guys are trying to install one in a car.

Torben · 29th July 2008, 04:31 AM

Quote:

Originally Posted by audioguru

The Jackhammer is a 22" subwoofer rated at 6.000W RMS. It weighs 369 pounds.
There is a funny video where some guys are trying to install one in a car.

Whoa. That's insane.

In a car? Wouldn't you need a dedicated generator just to power it?

Torben

audioguru · 29th July 2008, 05:25 AM

Every year there is a max sound level competition for a car's sound system in a town near my home.
I went there one time but the very loud sounds and smoke forced me to leave.
On some cars the windows break.

**Nigel Goodwin** · 29th July 2008, 10:12 AM

Quote:

Originally Posted by Mikebits

2KW amp? Holy hearing loss Batman! Why so much power, do you really need that much power?

It's VERY common for PA use, 2KW is a very small system these days, 10KW or 20KW wouldn't be unusual for a disco or bands PA.

I run 400W+400W, from a small compact mixer amplifier, but it's very much a tiny system for these days.

Quote:

Is this for a guitar amp?
Maybe you can build a Tube amp, Lots of web sites with tube amp schematics. I found a 400W amp at this site.
http://www.drtube.com/guitamp.htm

Except you're talking MUCH lower powers, and MUCH more expensive to build, plus you have reliability and regular servicing problems with valve equipment.

HiTech · 29th July 2008, 02:57 PM

Quote:

Originally Posted by Nigel Goodwin

... plus you have reliability and regular servicing problems with valve equipment.

That's why one should buy a Marshall or a HiWatt -- or even the old Ampegs. They last, aside from the occasional replacing of tubes.

HiTech · 29th July 2008, 03:02 PM

As for that MTX Jackhammer woofer, I wonder why the designers went with aluminum voice coil instead of copper? Copper has always been the staple of truly high-quality voice coils.

jpanhalt · 29th July 2008, 03:08 PM

Quote:

Originally Posted by audioguru

Every year there is a max sound level competition for a car's sound system in a town near my home.
I went there one time but the very loud sounds and smoke forced me to leave.
On some cars the windows break.

I asked the question about maximum power locally and was told the record exceeds 300dB. Like you say, breaking glass is a safety concern. Hard to believe.

John

jpanhalt · 29th July 2008, 03:09 PM

Quote:

Originally Posted by HiTech

As for that MTX Jackhammer woofer, I wonder why the designers went with aluminum voice coil instead of copper? Copper has always been the staple of truly high-quality voice coils.

Mass?

John

**Nigel Goodwin** · 29th July 2008, 03:53 PM

Quote:

Originally Posted by HiTech

That's why one should buy a Marshall or a HiWatt -- or even the old Ampegs. They last, aside from the occasional replacing of tubes.

They all go wrong fairly regularly, even if it's just replacing tubes/valves.

For certain styles of guitar playing you NEED a valve amp - but that's really all they are good for. For PA they are useless, much too poor a quality and much too low a power - ignoring the reliability and servicing issues.

A friend of mine was given a 60W Fender combo,it wasn't very old (2-3 years?), but he'd taken it to three or four music shops and they had all told him it was beyond repair. I told him to bring it to me, and I repaired it in five minutes, and didn't charge him anything - as usual in valve amps, the anode loads of the triodes had gone high or O/C.

Most of the music shop repair guys are too young to understand valves, but they are generally very easy to repair - as they are so simple.

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28th July 2008, 01:47 PM	(permalink)
Hadeed Ahmed Sher	2 Kw Audio Frequency Power Amplifier Design HI, Can any one guide me to a good tutorial of designing a 2kw Audio frequency Class D power Amplifer. Any Circuit diagram or application note. Regards

28th July 2008, 09:01 PM	(permalink)
Mikebits	2KW amp? Holy hearing loss Batman! Why so much power, do you really need that much power? Is this for a guitar amp? Maybe you can build a Tube amp, Lots of web sites with tube amp schematics. I found a 400W amp at this site. http://www.drtube.com/guitamp.htm I never built any of these so I do not know the quality of these designs.

29th July 2008, 05:25 AM	(permalink)
audioguru	Every year there is a max sound level competition for a car's sound system in a town near my home. I went there one time but the very loud sounds and smoke forced me to leave. On some cars the windows break. __________________ Uncle $crooge

29th July 2008, 03:02 PM	(permalink)
HiTech	As for that MTX Jackhammer woofer, I wonder why the designers went with aluminum voice coil instead of copper? Copper has always been the staple of truly high-quality voice coils. __________________ Don't make me reach through this monitor to slap you a good one! Last edited by HiTech; 29th July 2008 at 03:03 PM.