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Old 5th October 2012, 02:24 PM   #12601
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Very nice!
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Old 5th October 2012, 03:55 PM   #12602
6L6 is offline 6L6  United States
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Congratulations on your complete amplifier!

I must agree with the other posters, your case is very attractive and has a balance and proportion that is very harmonious.
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Old 5th October 2012, 04:23 PM   #12603
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Great build---- lovely work and vision. Someone once said, "A laborer works with his hands; a craftsman with his hands and mind, and an artist with his hands, mind and heart." Jpedro is an artist.

Jeff
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Old 5th October 2012, 05:38 PM   #12604
jpedro is offline jpedro  Portugal
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Dear, Beetle and WithTarragon.
Thank you. I am encouraged by your words the appreciation
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Old 5th October 2012, 05:42 PM   #12605
jpedro is offline jpedro  Portugal
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Dear, vdi_nenna, 6L6 and jeffharr.
Thank you. I am encouraged by your words the appreciation
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Old 5th October 2012, 06:42 PM   #12606
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Excellent construction.
Case is very unique and appealing.
You have a good sense for the drawing and style.

Thanks for sharing.
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Old 5th October 2012, 06:54 PM   #12607
jpedro is offline jpedro  Portugal
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Carlomar,
Thank you for your support and technical advice.
Were fundamental for the good success of the project.
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Old 13th October 2012, 05:15 PM   #12608
labjr is offline labjr  United States
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Anyone know if the F5 clone boards in the store have been updated with P3 and other changes in the circuit? The schematic in the store shows P3 but it doesn't appear to be pictured on the board.
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Old 14th October 2012, 12:38 AM   #12609
Abx74 is offline Abx74  France
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I ordered and received F5 stock PCB few days ago, v2.20 and no P3 on board

Damien
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Old 18th October 2012, 01:45 PM   #12610
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Well, here's my latest F5 in operation -- I now have 8 F5's in operation including some for which I did the PCB's by hand -- this version has some stuff I've found necessary or helpful over the years -- I provisioned parallel surface mount JFETs -- pairs of mmbf5460/mmbf5457 which get you close to the J74/K170 and are very inexpensive -- P3 is there of course as well as mounting holes for paralleling in various source resistors.

I put some local capacitance on the board -- when testing these amplifier with long leads you invariably get some oscillation. The RFI mitigation cap and output zobel aren't strictly necessary until they become necessary.

I constrained the board dimensions so that it would fit in the chassis/cases which the DIYAUDIO store is offering, although I roll my own.

Click the image to open in full size.
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