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cviller cviller is offline

diyAudio Member

About Me

  • About cviller
    One of those who actually build stuff.
    Diy hifi - obviously...


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General Information
  • Last Activity: Today 05:37 PM
  • Join Date: 9th December 2005


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View cviller's BlogRecent Entries
Latest Blog Entry

Posted 11th February 2010 at 05:36 AM by cviller Comments 1
Posted in Uncategorized
This is a guide to building a F4 using my boards, but you may be able to find some useful information here even if you use other boards.

The boards are based on the schematics from Nelson Pass's FirstWatt F4. You can get the service/user manual here: First Watt: Products: F4

You might want to check out the GB thread here:

Here is a picture of the pcb.
Attachment 109

There is a trace error around R22. I have cut the traces on most of the boards I have sent - and the rest of the batch will be cut before I send them out.

These are the cuts which needs to be made:
Attachment 110

And the green lines indicate where a connection must be made:
Attachment 111
This can be done simply by having the leg of R22 go through the hole and to the side.


Posted 3rd February 2010 at 01:17 AM by cviller Comments 98
Posted in Uncategorized
As promised, I would make a guide to the boards and in particular to the additions I have made to the F5. I decided to do this in the blog, because then you can give me comments which I can use for improving the doc. However I'm not done at all, but I thought it would be nice to give you access to the BOM I have made.

IMPORTANT: Before you start stuffing your boards, you must read the manual/article written by Nelson Pass available for download on the First Watt website (First Watt: Products: F5).

Detailed guide by Steve and Matt:

Here is a picture of the pcb.
Attachment 99
There are no more boards available, but you can order F5 boards on the diyAudio store.

Attachment 98
With the addition of optional extra output mosfets and cascoding, there are...
Recent Comments
Hi Charles,
Posted 17th August 2015 at 01:27 PM by cviller cviller is offline
Sorry for another heat...
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Hi guys - sorry for...
Posted 5th April 2013 at 05:28 PM by cviller cviller is offline
Does anybody have these...
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mk57. i guess you have...
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