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Old 23rd December 2012, 12:10 AM   #591
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Chassis work and PSU pretty much done. Ready to heat it up tomorrow. Need to wire up a light bulb first.

DSC_0960.jpg
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Old 23rd December 2012, 12:41 AM   #592
6L6 is offline 6L6  United States
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Bill,

That looks good so far! (Well, as much as I can see from one photo...)

Only one question, do you have an individual wire for V+, GND, and V- to each amp board? (In your case, terminal strip)?

Disconnect the Diodes from the caps on first power up, to make sure that your polarities are correct and voltages in the ballpark. (they will be high with no load)

Then hook the caps to the bridges and stand back. If they don't blow up (which is good) then measure your voltages at the PSU outputs and see if they too are in the ballpark.

If yes, then unplug it, keep calm and carry on with the amp boards.
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Old 23rd December 2012, 01:17 AM   #593
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Good eye. Not enough rails from the PSU to the terminal blocks. Need to solder a few more wires to the board. Thanks for info on turning it up. Still need to stuff the amp boards. Wanted to get the power, chassis set first.
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Old 23rd December 2012, 04:05 PM   #594
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I had the polarity on the bridge rectifier reversed on one side. Fixed - but the power led is dead on that side. I am getting about ~25.5 on all rails - looks OK now.
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Old 18th January 2013, 02:30 AM   #595
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Default Six F5 together with power supply SMPS

Hi all,

Some more pictures of the front panel of the unit multiple F5 called "Percheron digama buffer."

F5_ajh8A.jpg

F5_ajh6.JPG

F5_ajh8B.jpg

F5_ajh7.JPG
More pics https://www.facebook.com/augustojose.hoffmann

Last edited by augustoriodosul; 18th January 2013 at 02:35 AM.
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Old 21st January 2013, 01:29 AM   #596
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Default Re: Six F5 together.....

.......you must have one huge, huge, gigantic, very large switching power supply to run six F5's (but I don't think I see it, in your pics.....(!)

As for those heatsinks, a manufacturer in the U.S., check out this thread:

Heatsink candidate for Class A?
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Old 21st January 2013, 01:47 AM   #597
6L6 is offline 6L6  United States
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Hey Ken! How you doing?
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Old 21st January 2013, 10:23 AM   #598
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Hi CanAm Man,

Heatsinks made in Brazil by "HS Dissipadores". Set of 8 units model 125.137, measuring 125x137 mm and Thermal Resistance: 0.66 °C/W/4"

HS Beneficiamento de Alumínio

The power supply is one SMPS of Connexeletronic (Vasilache) 1KW model A1000SMPS.

F5 Pass: more pics and info:

https://www.facebook.com/media/set/?...4163418&type=1
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Old 8th February 2013, 11:39 AM   #599
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Cool 100% Finished

The front panel arrived yesterday from Front Panel Express. They did an amazing job. My F5 is officaly complete. Listening to Radiohead "King of Limbs" right now and it sounds amazing. I was listening to CSNY "Four-Way Street" and I heard a low buzz and was a bit concerned. It was actually the PA buzz on the recording! I have been listening to this record for my whole life and it was like hearing it for the first time! Listening to Coltrane and Monk "Live at Carnegie Hall" and you can really hear Monk humming along in the background! Through the solder fumes, we often forget this all about listening to music...

Thanks again to 6l6 for an awesome build guide and the offline support. I had my Google Nexus tablet on the workbench reviewing the photos and write-ups of this post the whole time. Need to finish my Pearl 2, start my Mezmerize B1. Great hobby!
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Old 8th February 2013, 06:07 PM   #600
WalterW is offline WalterW  Netherlands
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Nice build ! Love the frontpanel, are those LED's or lamps ?

Haha, I experience the same, you hear things in music never heard before.
Radiohead sounds extremely well on F5! I am listening a lot to KidA, Amnesiac and OK Computer :-)

Walter
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