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PKN XD4000 Test Results

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abeltronics View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote abeltronics Quote  Post ReplyReply Direct Link To This Post Topic: PKN XD4000 Test Results
    Posted: 01 May 2010 at 8:27pm

I bench tested a PKN XD4000 1U class D amplifier the other day, here's a link to the results. There's some other stuff I tested that we didn't at the amp meet....

 
I'll be putting some more things on there soon.......
 
(and yes, I did measure the mains)
 
Lewis.


Edited by abeltronics - 01 May 2010 at 10:31pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ceharden Quote  Post ReplyReply Direct Link To This Post Posted: 01 May 2010 at 9:04pm
I'm not sure the distortion you mention on the crests of the waveforms at full power is really distortion as such.  I'm no expert on Class D but I have chatted with people who are about other designs.  The Tripath based amps for example show exactly the same when driven to maximum output voltage.  My understanding is that it's actually the switching frequency, the carrier you could say appearing on the output rather than actual distortion.

We may be singing from the same hymn sheet but I just think it might be misleading to call it distortion.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote andyamp Quote  Post ReplyReply Direct Link To This Post Posted: 02 May 2010 at 5:43pm
looks like distortion to me.

That's the best waveform on a class D i have seen, by A very long way.
got to hand it to PKN very good.

There will be several other class D amp makers that will be Very worried
with the work that PKN have done as it could well set a new standard for class D and make there work look
a wise man changes his mind a fool does not.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357 Quote  Post ReplyReply Direct Link To This Post Posted: 02 May 2010 at 5:58pm
Originally posted by andyamp andyamp wrote:


There will be several other class D amp makers that will be Very worried
with the work that PKN have done as it could well set a new standard for class D and make there work look


Let's see how long it takes them to starting talking PKN down, even though a few on here started it already without hearing it.. LOL
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Post Options Post Options   Thanks (0) Thanks(0)   Quote andyamp Quote  Post ReplyReply Direct Link To This Post Posted: 02 May 2010 at 6:08pm
well you will not see me talking them down.

even those that have been doing it to me.

good luck to PKN
guess i need to do a very big class D next
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Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357 Quote  Post ReplyReply Direct Link To This Post Posted: 02 May 2010 at 6:19pm
Originally posted by andyamp andyamp wrote:


even those that have been doing it to me.


Let's see what to expect...

1. PKN domains get nicked.
2. Someone put's up biased amp test, on authored on competitor's company computer,
3. Biased amp test, with measurements for PKN taken at different settings
4. Picture of PKN sabotaged put up, stating "it did that on its own"
5. Someone states his mate's sister's dog's uncle knows they are Labg copies, and where they are made in China.
6. Hungary does'nt have electricity, so does'nt know how to make amps.
7. Amp isn't made in England, so it's Chinese.



Edited by levyte357 - 02 May 2010 at 6:21pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote andyamp Quote  Post ReplyReply Direct Link To This Post Posted: 02 May 2010 at 7:00pm
sounds like the doggy poo i have had from my competitors


every dog will have there day
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Post Options Post Options   Thanks (0) Thanks(0)   Quote sKs01 Quote  Post ReplyReply Direct Link To This Post Posted: 02 May 2010 at 7:39pm
What's the price roughly of one of these?

Edited by sKs01 - 02 May 2010 at 7:40pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote abeltronics Quote  Post ReplyReply Direct Link To This Post Posted: 02 May 2010 at 7:54pm
http://www.pkndigital.co.uk/ - about 1200 quid. That seems incredible value for money......
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Post Options Post Options   Thanks (0) Thanks(0)   Quote backlash Quote  Post ReplyReply Direct Link To This Post Posted: 02 May 2010 at 7:58pm
Originally posted by abeltronics abeltronics wrote:

http://www.pkndigital.co.uk/ - about 1200 quid. That seems incredible value for money......


That is very good value for money for the power output.

These are not stable at 2ohms though are they?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote csg Quote  Post ReplyReply Direct Link To This Post Posted: 02 May 2010 at 7:59pm
and thats including VAT!
 
would like to hear the 6000
 
apparently they are 2 ohm stable under dynamic conditions, but as these are bridged channels already, a 2 ohm load would be seen as a 1 ohm load each side. PKN has stated that no extra power is available into a 2 ohm load
 
In reality, the fact that max output is available to 4 ohms makes this more useful than the vast majority of high powered amps where a 2 ohm load is required to take advantage of the power.
 
looking at the 6000, the rated power of 3600w @ 4 ohm is up there with very big amps like the FFA 10K and others.


Edited by csg - 02 May 2010 at 8:03pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote abeltronics Quote  Post ReplyReply Direct Link To This Post Posted: 02 May 2010 at 8:03pm
Originally posted by backlash backlash wrote:

These are not stable at 2ohms though are they?
 
Is anything?
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