Destroyer x Amplifier DX HDII version. - Page 76 - diyAudio
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Old 17th January 2009, 10:46 PM   #751
Adi_007 is offline Adi_007  Romania
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hi...I want to build this amplifier but I don't know how powerfull the transformer should be for a stereo amplifier.....can you tell me (sorry for my english, is too late and I am tired)
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Old 24th January 2009, 11:54 AM   #752
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For 2 channels and one toroid 500VA at least with one toroid per channel 250 a 300 VA
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Old 24th January 2009, 11:58 AM   #753
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I was wondering if there is anyone who can design a PCB layout of this amp with 4 output transistors and their emiter resistors?
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Old 27th January 2009, 03:07 PM   #754
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I'm not sure I understand the question, but if you wanted a more powerful version of HXII, you might consider building Carlos' big amp design -- the Precision. That is configured for up to 6 output transistors per channel ( 3+ and 3-)

Francois
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Old 27th January 2009, 03:15 PM   #755
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Quote:
Originally posted by Francois G
I'm not sure I understand the question, but if you wanted a more powerful version of HXII, you might consider building Carlos' big amp design -- the Precision. That is configured for up to 6 output transistors per channel ( 3+ and 3-)

Francois
It isn't to have more power but in that way you could use higher PSU voltage.Normaly you use a 2x26VAC for this amp but when you have more output devices you could use let us say 2x30VAC.Those ones I've right now.About the Precission amp that's the next one I build.
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Old 17th December 2009, 05:26 AM   #756
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Quote:
Originally Posted by meanman1964 View Post
I was wondering if there is anyone who can design a PCB layout of this amp with 4 output transistors and their emiter resistors?
No one?
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Old 17th December 2009, 02:29 PM   #757
udailey is offline udailey  United States
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Been a while since I have been to this thread. For anyone who just hit this thread for the first time you might be interested to know that I have spoken to a few people I highly regard in this forum that have listed this amp as one of their very favorites.
Uriah
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Old 17th December 2009, 03:09 PM   #758
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Default I do not remember very well, but i think Taj has made a 55V version

say, he made the board layout, i am not sure if was tested as had errors first one made.

For sure was published into the long thread, the Dx amplifier thread.

I will search into my backup Dvds to see if i can find the layout.... a very beautifull work mafe by our forum friend Taj.

Also will ask Taj if the one was fixed or not.... soon i will be here with the needed answers.

Thank you Meanman and Udailey, this amplifier model is the most appreciated.

Name is High Resolution II, or HRII, the HDII was an error, a typping error made be Nordic, the one openned the group buy, made the board design and distributed 100 boards spreaded into whole world.

Here the HRII audio sample:

http://www.youtube.com/watch?v=Nr-RwqN8qJM

regards,

Carlos
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Last edited by destroyer X; 17th December 2009 at 03:19 PM.
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Old 17th December 2009, 04:03 PM   #759
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Default Well, the board was not assembled to test, so, may have errors

not guaranteed because that... you should check and fix errors, so, do it if you are skilled enougth.

Taj send me last version, not guaranteed if have error or not.

So, build it under your own risk, the circuit is guaranteed, but the more is not (for a while)...maybe you will fix errors for all of us, a nice contribution to our forum.

If image is not 100 percent, i have the original that is 1.5M size, then write me:

carlos.eugenio1951@yahoo.com

regards,

Carlos
Attached Files
File Type: pdf Dx HRII 55V, last version.pdf (72.8 KB, 120 views)
File Type: pdf DXHRII_55V.pdf (24.3 KB, 81 views)
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Old 18th December 2009, 03:43 AM   #760
taj is offline taj
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Default Dxhrii-55v

Here are two high resolution files; one is only the traces and it has been reversed ready to print for etching; the other is a component layout view (transparent PCB style).

..Todd
Attached Files
File Type: pdf DXHRII55-PCB-TRACKS-REV.pdf (50.1 KB, 83 views)
File Type: pdf DXHRII55-PCB.pdf (79.0 KB, 88 views)
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