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Old 31st August 2005, 07:37 PM   #121
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Hello Jacco.

The only ones I could get at Conrad (I know, I know), with a high enough max current spec., were 10 ohms NTC's but I think they no longer have those (Imax was something like 9A). I am going from memory here, it's been a while since I ordered those (I really should get some work done on the Alephs).


Regards,

Jarno.
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Old 31st August 2005, 07:44 PM   #122
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Nothing wrong with Conrad, i started buying parts at the Conrad shop in Essen/Germany in the 80s.

If the stuff with the current limiter is not to your satisfactory once you finished the Aleph's, let me know, i can get you the right ones.

Great boards, Blues master, the blue and green combo looks terrific. Thanks for posting the many pics.
Send the GB honcho in.
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Old 31st August 2005, 08:52 PM   #123
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Jacco,

Do you know if it's possible to order from Farnell or RScomponents without too much hassle (not being a business)?
And what are the right NTC's 22ohms? What's the current rating on those?

Regards,

Jarno.
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Old 31st August 2005, 09:01 PM   #124
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Quote:
Originally posted by jacco vermeulen

Great boards, Blues master, the blue and green combo looks terrific. Thanks for posting the many pics.
Send the GB honcho in.
Thanks, Jacco. Who's that honcho?

You're getting there Jarno.
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Old 6th September 2005, 07:14 AM   #125
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The 12"x12" board is now separated into 4 pieces of 3"x12" boards consisting of a pair for each Aleph channel. A pair consists of Boards I and II. Board I contains the Input circuit and the lower output FETs. Board II contains the Aleph CCS FETs and the string of output resistors. Here are some pics. I used a pocket blade to deepen the v-scoring which makes separation easier.
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Old 6th September 2005, 07:16 AM   #126
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One board cut out...
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Old 6th September 2005, 07:18 AM   #127
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Finally...freedom!
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Old 6th September 2005, 07:31 AM   #128
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For an Aleph 3/30/4/5/small X you can mount the pair of boards of one channel in one heatsink (sized accordingly of course). You can always build monoblocks if so you choose.

For Aleph 60/2 monoblocks each board gets its own heatsink.

For Aleph 1.2/large X monoblocks the picture represents one channel
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Old 6th September 2005, 07:32 AM   #129
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One channel up close..
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Old 6th September 2005, 08:25 AM   #130
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Default Hot-rod plans - higher res.

Hello Blues,

Do you suppose that you could put the design for your Aleph boards up again, but with a slightly higher resolution. The .pdf's don't really look that clear when enlarged, certainly not for me to be able to read easily. What program did you make the files with?
(I use Circad '98 which can read Gerber files.)

Essentially, at present, Aleph's are not on the "front burner" for me as I am getting some speakers built, however it could make its way there soon. Then I will be looking at making some small Alephs (perhaps some Mini or 3/30 combinations) and your boards look nice. What I would probably do is etch them myself when the time comes.

BTW, are you selling them at present or still getting things going with only runs of a few sets at a time?

Regards,
George.
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