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Old 9th February 2013, 07:02 PM   #1281
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i would use min 40V caps. and 4*33.000uF pr ch.
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Old 9th February 2013, 07:15 PM   #1282
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And still one transformer?
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Old 9th February 2013, 08:38 PM   #1283
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one. two. thats up to you. two 3-400VA or one 6-800VA.
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Old 10th February 2013, 07:49 AM   #1284
kroyin is offline kroyin  India
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Pics of my utilitarian F5 V2 monoblocks. Biased @ 320mV with ~8mV offset. Haven't had the chance to play with P3

Boards from indian group buy DIY: Pass F5 turbo v2 initiated - Page 18

Mosfet (perfectly matched) & diodes from Buzz

300VA, 8x15K caps per channel. Heatsinks are 500mm long with 125 mm width (not optimum config, but was cheap and handles the heat very well)

F5 vanilla didnt work for me, Aleph J set the bar pretty high, F5T V2 sailed over the bar (by a few centimeters :-)).
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Last edited by kroyin; 10th February 2013 at 08:03 AM.
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Old 10th February 2013, 09:53 AM   #1285
henryve is offline henryve  South Africa
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Quote:
Originally Posted by kroyin View Post
F5 vanilla didnt work for me, Aleph J set the bar pretty high, F5T V2 sailed over the bar (by a few centimeters :-)).
Good to know. After my KSA50 clone which is almost finished now I am tackling an Aleph J, and then F5TV2. I was thinking of doing the F5TV3, but realistically it will not fit in my budget at the moment. Maybe later. The F5TV3 requires a mean PSU and heatsinks which will costs a lot of money, unless you do heat tunnels with fans like a Krell KSA100.
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Old 10th February 2013, 10:47 AM   #1286
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Quote:
Originally Posted by kroyin View Post
Pics of my utilitarian F5 V2 monoblocks. Biased @ 320mV with ~8mV offset. Haven't had the chance to play with P3

Boards from indian group buy DIY: Pass F5 turbo v2 initiated - Page 18

Mosfet (perfectly matched) & diodes from Buzz

300VA, 8x15K caps per channel. Heatsinks are 500mm long with 125 mm width (not optimum config, but was cheap and handles the heat very well)

F5 vanilla didnt work for me, Aleph J set the bar pretty high, F5T V2 sailed over the bar (by a few centimeters :-)).
Nice work. An aleph J with ultiple outputs would pull it back in a little. That extra grunt is one of the big differences. Just more at ease in its presentation.
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Old 10th February 2013, 10:57 AM   #1287
kroyin is offline kroyin  India
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Originally Posted by buzzforb View Post
Nice work. An aleph J with ultiple outputs would pull it back in a little. That extra grunt is one of the big differences. Just more at ease in its presentation.
Oh yes an AJX is exactly what is on my mind :-).I have the boards, most parts, understanding (hopefully) of what needs to be done for a 40 Watt AJX.
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Old 10th February 2013, 11:08 AM   #1288
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Oh yes. The AJX will definitely pull it back in. When its done, youll have comparable power and you will then be hearing topology difference.
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Old 10th February 2013, 11:22 AM   #1289
Zen Mod is offline Zen Mod  Serbia
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don't forget that grunt depends of current capability

each half of X is seeing half of load

go figure what that means for number of outputs , at least by my twisted logic

if J is having 2 pairs in output , I would go with 8 pairs for XJ

there is no much brain in using different logic from Pa's , when going bigger

( do not ask how I came to that conclusion )
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Old 10th February 2013, 11:32 AM   #1290
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Yup. gonna need more current. about 2.5A per channels for 50W. But you can drop the rails, correct, as voltage sums across the load. Bridged gives you double power into double the load, if you got the current. Wonder of AJX maintains classic Aleph signatture or does X, X it out
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