Dx Armagedon will be released next Christmas - 2013 - Page 2 - diyAudio
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Old 16th September 2013, 08:59 PM   #11
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Very interesting Carlos! I haven't even finished my MkIII and I'm already looking forward to this beast!!

10 pairs outputs is huge! Have you thought about trying an EF3 (emitter-follower triple) output stage to reduce the loading on the VAS? Here is Kevin O'Conner's design from another thread as an example:

Click the image to open in full size.
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Old 17th September 2013, 04:46 AM   #12
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Default No!... i do not use tripple

Here you have the excellent and huge power transistors i use.

Try Leach amplifier Ranchu...it uses the tripple you like.

regards,

Carlos
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File Type: jpg Suggested power transistors to Dx amplifiers.jpg (857.2 KB, 295 views)
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Old 17th September 2013, 05:04 AM   #13
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OK - it was just a suggestion I can see you've already given it some thought before.
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Old 17th September 2013, 09:22 AM   #14
wiljj78 is offline wiljj78  Philippines
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Old 17th September 2013, 09:59 AM   #15
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Default No problems dear Ranchu32..... i am an old bugger

I have already assembled so many different topologies...so many amplifiers that you may not even believe.

I have tested the stuff before....many times.... was abandoned this circuit...not stable.

But sometimes people has some empathy because looks good..also the double differential input (the big trouble is there) and the full symetry is something people love...but...PNP is usually higher gain then NPN....so... amplifier halves are never the same.... abandoned double differential too.

Good Will78... subscribed!...thanks,

regards,

Carlos
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Old 17th September 2013, 12:24 PM   #16
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No problem Carlos! I'm still learning about the different topologies trying to understand the differences and what works best.

I'm building your MkIII and DX Super A and can't wait to hear your designs for myself. I will compare to other amplifiers to compare the sonics. But from what I have read from other people I have every expectation that your amplifier will be superb.
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Old 17th September 2013, 02:32 PM   #17
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Default My amplifier use to beat others...not because they are

that much better...it is also the philosophy.... i strongly suggest people not to use pr amplifiers....this, by itself, already increase the sound quality a lot.

They are tuned for sonics.... making comparison you will perceive.

In matter of fact if you do not compare....every amplifier will sound good, because our Brain adjust everything after a couple of seconds....you see people perceiving bass in cell phones .... when there's no bass at all.

The real thing is that you gonna like any amplifier...because your brain will adjust...what i did?

I am adjusting and listening a few seconds with A or B...this is the way i do the stuff.

I use to say the competition will loose...and they will and always will..in special because they use a lot of stuff inside the audio chain..pre amplifiers, switches, cables, active and passive parts...each thing distorts a little.

I said this many times...but people do not listen.... they listen and they not hear...or they hear but not listen...the message enter the left ear and have a connection of exaust in the rigth ear (ahahahahahah!)

Not all guys, of course not all guys.... we have people that has attention..but 30 percent listen and do not hear.

Then they go to compare with mine without preamplifier...ehehehehehhe...i beat then easy and laughing and rolling in the floor so loud is my laugh...they already lost! in advance they start the competition...because of the philosophy.

No chance for them...i will always have advantage.....but..if they decide to remove the preamplifeir, the advantage to my amplifiers is small.... depending the speaker you may not even notice.

You see...i do not keep hidden the tips and tricks...how many guys do that?...maybe because i am crazy...... and if i am crazy because of that..then i am proud to be crazy.

regards,

Carlos
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Last edited by destroyer X; 17th September 2013 at 02:35 PM.
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Old 17th September 2013, 06:02 PM   #18
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Default Armagedon topology

You do not need to use 10 output pairs....... this ammount is to 1800 Watts RMS at 2 ohms

If you feel good with 900 Watts at 4 ohms you can use 6 pairs.

If you want 400 Watts at 8 ohms then you can use 3 or 4 pairs.

It is up to you.

These level of power informed above are approximatelly...amplifier not ready, this may change a little bit.

Also you can adjust your power changing the power supply voltage...from 35 to 90 volts it will operate.

This amplifier may use bigger supply boards.. in my imagination this monster will cost less than 55 USD the kit, including two amplifier pcboards and one power supply pcboard.

We are studying the use of a special, exclusive, customized, made by the Corporation, optimized, simplified, SMPS.

regards,

Carlos
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File Type: jpg Armagedon - September 17th.jpg (478.5 KB, 235 views)
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These words sounds alike English..but they are not.. these are words without meaning, just sounds made by humans; https://www.youtube.com/watch?v=_X_7iMHugXM

Last edited by destroyer X; 17th September 2013 at 06:07 PM.
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Old 17th September 2013, 09:12 PM   #19
quan is offline quan  Australia
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I am subscribed with interest for hungry speakers.
Quan
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Old 18th September 2013, 12:44 PM   #20
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Default Hungry speaker was nice

Lovely Aussies...you have the good mood...this is nice.

I was watching the low end..exactly were we have some punch.

Also output level.

regards,

Carlos
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File Type: jpg Armagedon output node - 1.jpg (51.4 KB, 181 views)
File Type: jpg Armagedon output node - 2.jpg (73.6 KB, 161 views)
File Type: jpg Peak to peak output voltage.jpg (97.8 KB, 58 views)
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These words sounds alike English..but they are not.. these are words without meaning, just sounds made by humans; https://www.youtube.com/watch?v=_X_7iMHugXM

Last edited by destroyer X; 18th September 2013 at 12:53 PM.
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