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Old 8th May 2013, 02:20 AM   #1861
CanAm Man is offline CanAm Man  United States
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Eric...great looking amp--and a great way to introduce your daughter to the hobby....!!
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Old 8th May 2013, 11:32 AM   #1862
Eric is offline Eric  United States
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Quote:
Originally Posted by CanAm Man View Post
Eric...great looking amp--and a great way to introduce your daughter to the hobby....!!
Very nice, Ken! I didn't realize what type of wood you had used when I first saw your amp. Do the wood panels have any negative impact on the air flow through the sinks? This is an interesting approach to dress up the amp! I've also enjoyed the handful of amps that people have shown with sinks mounted on the inside of the chassis. Both are a little different than the norm.

Eric
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Old 13th May 2013, 04:00 PM   #1863
CanAm Man is offline CanAm Man  United States
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Do the wood panels have any negative impact on the air flow through the sinks?
Eric--No. In fact, the wood panels are an integral part of my heatsink cooling system. I have two muffin fans on the rear panel of the amp, that flow air into the central part of the chassis. From there, the air flows under the heatsinks (machined, for that purpose), and then the air flows upwards between the heatsink fins and wood panels. The air exits at the top. As such, I have both forced air (fans) and thermal convection (from the effect of a "thermal chimney" of the fins and wood panels). Works great.

I suspect the amp would run a lot warmer without the wood panels--would ruin the desired air flow path thru the amp.
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Old 13th May 2013, 04:06 PM   #1864
6L6 is offline 6L6  United States
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CanAm Man's amp probably has enough excess cooling he could run a hot F5T in it with little worry - I have had the honor of seeing it in person, it's one of those DIY projects that makes you want to aspir to that level of quality and detail.

Also, the panel meters are amongst the coolest things ever.
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Old 14th May 2013, 07:11 PM   #1865
WalterW is offline WalterW  Netherlands
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Finally ready!

Here are the latest pictures of my completed F5Turbo v2 with cascoding, with 2sj201/2sk1530 output MOSFETs and the diodes MUR3020W mounted on the heatsinks. I'm not a ''fraidy-cat" but hey, my sourceresistors are only 0.22 Ohm...
The frontpanel is wonderful made by Andrea of hifi2000.
The MOSFETs are biased at 1.25 A each at 33.2 volts so 40 Watts each.
Total power consumption is around 350 Watt, with max temp on the heatsinks of 52.3 degrees Celsius.
I first biased it around 380 Watt put the lid on the amp and I almost had a thermal meltdown
Took me hundreds of hours to complete....
Hope you like the pictures...
Attached Images
File Type: jpg Big 2sj201 and 2sk1530.jpg (298.0 KB, 1315 views)
File Type: jpg both channels ready.jpg (334.0 KB, 1285 views)
File Type: jpg in case.jpg (333.2 KB, 1255 views)
File Type: jpg thick analog ground.jpg (382.5 KB, 1194 views)
File Type: jpg hifi2000 front.jpg (200.3 KB, 1121 views)
File Type: jpg psu and case.jpg (359.3 KB, 623 views)
File Type: jpg upside down backview.jpg (431.5 KB, 678 views)
File Type: jpg need new feets.jpg (303.5 KB, 630 views)
File Type: jpg nearly ready - love this pic.jpg (387.7 KB, 803 views)
File Type: jpg ready, making music.jpg (222.5 KB, 805 views)
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Old 14th May 2013, 07:14 PM   #1866
WalterW is offline WalterW  Netherlands
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and some more....
Attached Images
File Type: jpg backside.jpg (259.6 KB, 604 views)
File Type: jpg side.jpg (266.8 KB, 457 views)
File Type: jpg bit too much.jpg (368.4 KB, 423 views)
File Type: jpg front.jpg (223.1 KB, 467 views)
File Type: jpg inside.jpg (280.6 KB, 479 views)
File Type: jpg hot - 52.3 Celsius.jpg (392.4 KB, 520 views)
File Type: jpg LED and powerbutton.jpg (192.3 KB, 511 views)
File Type: jpg nice too.jpg (210.7 KB, 359 views)
File Type: jpg back nice.jpg (348.0 KB, 522 views)
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Old 14th May 2013, 07:18 PM   #1867
merlin2069er is offline merlin2069er  Canada
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Wow, very nice.
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Old 14th May 2013, 07:23 PM   #1868
Zen Mod is online now Zen Mod  Serbia
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Fugly!



put 5mm spacers between heatsinks and both bottom and top plate , to have opening all around circumference ; that way it will have more air for inside cooling
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Old 14th May 2013, 07:24 PM   #1869
tinitus is offline tinitus  Europe
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help..I can't breathe..it's hot...and tight...man, that thing will be boiling hot like a vulcano
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Old 14th May 2013, 07:27 PM   #1870
WalterW is offline WalterW  Netherlands
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Thanks!
Ofcourse thanks to Papa Pass for this wonderful design and sharing it with the DIYaudio community!

The first music I listened to was a SACD from the Dire Straits, Brothers in Arms...your latest trick...WOW
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