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Old 14th April 2013, 06:51 PM   #1831
kosva is offline kosva  Greece
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Location: AIGIO ACHAIA
Default DCB1, F5, F5T V1 & 1/2 D1?

Dear friends
My name is Kostas A. Vazakas from Greece and I'm sending a few pics of my latest diy audio from N. Pass projects.
At first my DCB1 build on my old ALEPH's L motherboard and enclosure, https://www.passdiy.com/gallery/projects/70/kostas-a with two 12v/2.2 Ah batteries, and working fine from the end of 2010.
I think that I'll never change it because it is very natural, but without gain.
This was a problem with my ,also diy F5,because I couldn't listen music at higher levels.
My F5 clone has a common PSU with 500 VA transformer and 176 mF total capacitance, and a pair of 2SK1530,2SJ201 per channel.It was constructed before a year ago.
It is sounding better with my main speakers (SEAS W18NX001 & millenium tweeter) than my old DIY ALEPH 30, with more stereo imaging, detailed sound and better low and high freqs. But with the ribbon speakers (SS 18W8531G00 & Fountek JP3) ALEPH 30 is more musical and with more relaxing sound. F5 is a little bright at high frequencies with my ribbon tweeters.
But three months ago I finished my new F5 Turbo V1, with two pairs of 2SJ201,2SK1530 per channel and two separate PSUs with 500 VA (2x25V AC) and 154mF capacitance per channel.This amp is builded in my old diy ALEPH 5 mono enclosure. The problem is that the temperature is rising to 59-60 Celcius with 20 C room temp at 0.7 A per device.It's a heater for the winter.
My next step will be to use one channel per one enclosure of my old Aleph 5.
The sound is perfect, more powerfull and I don't need a gain preamp any more for my room.
My CDplayer is a DIY PRO2 and the dac is a DIY also, 2xTDA1541a with the D1 unbalanced I/V output, both of them are working hard for many years.
Dear Nelson thank you again for sharing your knowledge with the diyaudio community.
Attached Images
File Type: jpg DCB1 FRONT.jpg (284.0 KB, 1293 views)
File Type: jpg DCB1 ON OLD ALEPH'S L PCB.jpg (329.6 KB, 1221 views)
File Type: jpg DCB1 PSU.jpg (289.3 KB, 1161 views)
File Type: jpg F5 .jpg (409.5 KB, 1177 views)
File Type: jpg F5 FRONT.jpg (484.1 KB, 1118 views)
File Type: jpg F5 NAKED.jpg (426.4 KB, 474 views)
File Type: jpg F5 PCB.jpg (560.0 KB, 437 views)
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Old 14th April 2013, 06:55 PM   #1832
kosva is offline kosva  Greece
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Default MORE PICS

And the rest of the pics.
Attached Images
File Type: jpg F5 T FRONT.jpg (485.2 KB, 447 views)
File Type: jpg F5 T OPEN.jpg (357.1 KB, 450 views)
File Type: jpg F5 T TRANS.jpg (409.0 KB, 422 views)
File Type: jpg F5 T V1.jpg (547.3 KB, 390 views)
File Type: jpg F5 T.jpg (401.6 KB, 429 views)
File Type: jpg DAC & CDPLR.jpg (441.2 KB, 497 views)
File Type: jpg speakers.jpg (376.7 KB, 428 views)
File Type: jpg spkrs.jpg (395.1 KB, 410 views)
File Type: jpg DAC .jpg (525.9 KB, 488 views)

Last edited by kosva; 14th April 2013 at 07:13 PM.
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Old 14th April 2013, 07:00 PM   #1833
n3szd is offline n3szd  United States
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Nice stuff, thanks for sharing!
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Old 14th April 2013, 08:37 PM   #1834
WalterW is offline WalterW  Netherlands
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Wow, you really know how to build electronics... like your CD-player and DAC and your DCB1 !
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Pass F5, F5Tv3, ACA, Aleph J, DDDAC1794, DCB1, BA3-preamp, VFET CSX1.
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Old 14th April 2013, 09:42 PM   #1835
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Kostas,
Your F5T V1 is a nice slim design! Do you have any venting in the top cover?
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Old 15th April 2013, 06:37 AM   #1836
kosva is offline kosva  Greece
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No, nothing in the top cover, but as soon as possible in this enclosure will be
only one channel.
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Old 22nd April 2013, 12:13 AM   #1837
bcmbob is offline bcmbob  United States
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The latest version of a liquid cooled chassis for Pass and other "WARM" amps is almost complete.

For a pictorial build thread please use the following link. Please consider this a prototype that can be scaled up or down to cool anything from the tiny ACA to the biggest "House Heater"

Comment and suggestions welcomed. Hope you enjoy the approach

BLAT-3

(Some trim and fit still to come!)
Attached Images
File Type: jpg 20130421_194438.jpg (139.3 KB, 354 views)
File Type: jpg 20130421_194546.jpg (183.7 KB, 241 views)
File Type: jpg 20130421_195000.jpg (184.7 KB, 243 views)
File Type: jpg BLT3-42.jpg (659.8 KB, 411 views)
File Type: jpg BLT3-44.JPG (196.4 KB, 444 views)
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Old 22nd April 2013, 12:53 AM   #1838
n3szd is offline n3szd  United States
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My Dream, I know it's a turbo aleph 3, not the 1000 yet... Can't wait

Click the image to open in full size.
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Old 22nd April 2013, 03:29 PM   #1839
oiphy is offline oiphy  Norway
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Hello Bcmbob

how much dissipation with this fan/radiator. enough for a turbo V3 ??

Quote:
Originally Posted by bcmbob View Post
The latest version of a liquid cooled chassis for Pass and other "WARM" amps is almost complete.

For a pictorial build thread please use the following link. Please consider this a prototype that can be scaled up or down to cool anything from the tiny ACA to the biggest "House Heater"

Comment and suggestions welcomed. Hope you enjoy the approach

BLAT-3

(Some trim and fit still to come!)
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Old 22nd April 2013, 04:16 PM   #1840
bcmbob is offline bcmbob  United States
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oiphy, I will not have any good info till probably tomorrow evening. After filling I usually let it sit idle overnight as some leaks show only when there is no flow. I'll post the results gathered with a thermocouple.
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