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Old 31st January 2012, 07:30 AM   #481
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Last edited by wintermute; 31st January 2012 at 07:36 AM. Reason: three posts in a row
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Old 31st January 2012, 07:37 AM   #482
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rissotto I merged your three posts into one. Please do not use ALL CAPS it is considered shouting on internet forums.
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Old 5th February 2012, 12:48 AM   #483
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Hi guys,

I think it would be nice that somebody took over this interesting project. Would you agree with me Mark?

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Old 5th February 2012, 03:30 AM   #484
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Anyone know where ostripper has gotten too? I hope he is ok.

If anyone wants to build this amp all the info is on these pages. Schematic and pcb layout are both correct. BTW "rissoto" this amp sounds fantastic and is rated at 180w into an 8ohm load. I have done a side by side comparison with destroyers blame st amplifier(60w) and sonically there is no difference only this can provide more power and so has some more headroom. Just build it already.

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Old 5th February 2012, 04:36 AM   #485
Variac is offline Variac  Costa Rica
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Ok guys I really appreciate your interest. And I'd appreciate your input/help.

The problem as I understand it is that Gerber files can't be edited. They are like an output file, but you need the original Eagle files or whatever to go back to to make mods. We HAVE the Gerber files. But best that we can determine, the spacing of the holes doesn't match our "diyAudio Standard"

So you'll say "well just send it out already, who cares about the standard", and I think you're right, but I would ask if there's someone who can make the changes first- or it it is even possible..

The advantage of the standard, is that someone who has a chassis with heatsinks drilled for the First Watt amps, can easily switch to this amp and vice versa. Also if we produce a chassis with drilled hole on the heatsinks, these boards and the MOSFETS will screw right on..

BUT if we can't confirm the hole spacing or change it , We'll just send it out and get some really great boards in a month..
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Last edited by Variac; 5th February 2012 at 05:05 AM.
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Old 5th February 2012, 04:40 AM   #486
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I can't help unfortunately as I made my own boards from the jpg's ostripper provided. Had no problem with spacing though.

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Old 5th February 2012, 08:08 AM   #487
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Mark, you can get free Gerber viewers online to print out OS's work and check it.
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Old 5th February 2012, 10:40 AM   #488
AndrewT is online now AndrewT  Scotland
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Can anyone reverse engineer the Gerber files back to a PCB layout in it's various layers?
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Old 5th February 2012, 02:53 PM   #489
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Originally Posted by Variac View Post
But best that we can determine, the spacing of the holes doesn't match our "diyAudio Standard" .
Can you elaborate on this?

Looking at the latest gif/jpg files (25 July 2011), the spacing seems to be 40mm center-center for the power devices, as per the diyAudio standard.

The board mounting holes are quite different though. The board can only mount on two of the F5-X power device positions, as shown in the standard. Is this the problem?

The standard does not provide for mounting of the drivers or the Vbe multiplier, but JoJo seems to have found a workable solution for this, without tapping the heat-sink?

This is a great project. There are probably a few willing to redraw the PCB from scratch following OS's layout, if required. It would be regrettable to have OS out of the loop though.
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Old 5th February 2012, 04:09 PM   #490
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Think our good friend Alex can help...he does exceptional PCB layout work as we all know.

Alex are you reading? are you game for this interesting project? I think you already made similar layouts in the past.

Cheers, Tony
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