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Old 2nd June 2012, 08:35 PM   #1521
Variac is offline Variac  United States
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Ok, I'll post the proposed final designs here because at some point corrections were made. Melon Head, would be very grateful if you'd look them over, then we can send them off to the PCB fab.
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File Type: jpg F-5t Gain StageX.jpg (101.8 KB, 417 views)
File Type: jpg F-5t N Ch OPX.jpg (75.5 KB, 408 views)
File Type: jpg F-5t P Ch OPX.jpg (77.8 KB, 398 views)
File Type: jpg F-5t PSUX.jpg (109.7 KB, 398 views)
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Old 2nd June 2012, 09:02 PM   #1522
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Awful lot of potential current going through those psu board traces.
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Old 3rd June 2012, 01:08 AM   #1523
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Ok, I'll post the proposed final designs here because at some point corrections were made. Melon Head, would be very grateful if you'd look them over, then we can send them off to the PCB fab.
First off, I was just referring to the template for the hole positions on the heatsing

This is exactly the way I like it. I have not checked the fine details but generally speaking, I like separating the front end pcb from the output, that way if people say "I want more mosfets at the output" you don't have to redesign a whole new pcb, you just design bigger output boards.

Ideally the front end should contain everything so that someone can go absolutely nuts with it.

First impression is very good.

I will check it against circuit diagram.
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Old 3rd June 2012, 01:12 AM   #1524
Variac is offline Variac  United States
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We don't even have to design bigger output boards. Two output boards will bolt onto each heatsink on our big chassis and you can just daisy chain two boards together on each side to make a monster monoblock. If you want an n and p on each side for 2 channel that will bolt in place too.

The medium chassis only accommodates one board per side. Because it doesn't make sense to make a two channel F-5t in the medium chassis.
But again, you can put a "p" on one side and and "n" on the other to make a monoblock F-5t

Check the Universal Mounting specification in the Store here:
http://www.diyaudio.com/store/boards.html

And you'll see that the diodes just bolt on too..

Last edited by Variac; 3rd June 2012 at 01:49 AM.
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Old 3rd June 2012, 01:22 AM   #1525
a.wayne is offline a.wayne  United States
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^^^^ ETA on Boards... ?


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Awful lot of potential current going through those psu board traces.
He, he, hee , I will let you know for sure on this, current is my friend ...
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Old 3rd June 2012, 02:04 AM   #1526
Variac is offline Variac  United States
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No one's given the

I'll send them out as soon as we have a couple people trace them out and make sure that they're A-OK. Takes about 3 weeks for production.

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^^^^ ETA on Boards... ?
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Old 3rd June 2012, 02:11 AM   #1527
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We don't even have to design bigger output boards. Two output boards will bolt onto each heatsink on our big chassis and you can just daisy chain two boards together on each side to make a monster monoblock.
Yes, I noticed that. Very well thought out.

I also like that you have put N and P channel on separate boards.

It would be nice if you were to also do this for BA2 output. Or you could make these output boards compatible for both F5T and BA2, and just populate the relevant components. It would also reduce manufacturing costs.

Last edited by Melon Head; 3rd June 2012 at 02:31 AM.
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Old 3rd June 2012, 02:30 AM   #1528
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Which schematic should I refer to, to check the board?
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Old 3rd June 2012, 02:34 AM   #1529
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This is lookin good so far

Last edited by Melon Head; 3rd June 2012 at 02:38 AM.
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Old 3rd June 2012, 03:12 AM   #1530
Rush is offline Rush  United States
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Default Speaker output connection

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Ok, I'll post the proposed final designs here because at some point corrections were made. Melon Head, would be very grateful if you'd look them over, then we can send them off to the PCB fab.
I don't see where you connect the speaker wire. You supposed to double up the O/P connectors on the input boards?

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