Where to start with Aleph Mini

montre16 · 20th July 2011, 06:26 PM

Greetings all,

I am interested in building a 10w/channel mini Aleph power amp, such as KK's mini-A. I'm thinking this would be a nice amp to try with the new FH-MKIII's I'm building, and I suspect could also serve as a killer headphone amp.

I have been lurking here for a while without posting. I must say that I very much enjoy reading the forum; the amount of time one can spend here is astounding.

Anyway, I have spent a good deal of time poking around on the forum, but have not found any mention of a current North American source for PCBs for this amp. I know ChipAmp sells some Aleph boards, such as the ALEPH-TH-PCB, but their site is under construction and information on these boards somewhat sparse. Looking through the parts list, they seem to be for a much larger beast.

I have looked around eBay also, and, unsurprisingly, found a lot of dirt-cheap pre-assembled boards available from China. These are admittedly tempting, but I'm not about to support those presumably illegitimate enterprises trying to capitalize on what I am sure is unapproved use of Nelson Pass' venerable name and intellectual property. I also would expect the quality to be less than stellar. Since I would like both a clean conscience and quality I control, these options are no option.

Guidance would be appreciated.

Thanks,
montre16

sreten · 20th July 2011, 07:25 PM

Hi,

What is your problem ? The link you posted has circuit boards for sale ...

rgds, sreten.

montre16 · 20th July 2011, 08:00 PM

Thanks for the reply. Let me clarify: Regarding the KK boards, I would rather not order from such a distance, which is why I specified that I was seeking a North American source. I provided that link simply to disambiguate which circuit I was hoping to implement. I have no problem buying the KK boards if they are the best and most practical option available to me, of course, but the price difference and between these and the ChipAmp Aleph boards, as well as the relative geographical proximity of ChipAmp, makes me want to investigate my options further.

I guess I was hoping someone might provide something of a clarification as to precisely which schematic the ChipAmp Aleph boards correspond to; the only information I can seem to find on ChipAmp's site is a parts list which calls for 6 IRFP240's per channel, rather than the two indicated in the KK schematic.

I apologise if I have not been sufficiently diligent in scouring the forum and site for answers, or if my inquiry is excessively noobish.

Thanks,
montre16

digits · 20th July 2011, 08:28 PM

Montre I will be doing a GB to produce a few mini A boards in the next month or so, provided I can actualy get forward for a change, just had a hectic week. The prototype is all done appart from adding the FETS, I hope to do some matching tommorrow to get a set.

res07njc · 10:12 PM

fyi, the chipamp boards were designed to build the Aleph from Mini to 60 watt. If it's mini, then you just save the unused boards until the devil gets your soul. Click on 'order' and you'll find all you need. And at that price.. wow. This board/project is thoroughly vetted among a 1000+ post group buy thread also. New Aleph Mini PCB GB

montre16 · 20th July 2011, 10:13 PM

Quote:

Originally Posted by res07njc

fyi, the chipamp boards were designed to build the Aleph from Mini to 60 watt. If it's mini, then you just save the unused boards until the devil gets your soul. Click on 'order' and you'll find all you need. And at that price.. wow. This board/project is thoroughly vetted among a 1000+ post group buy thread also. That is your thread.

Excellent. That answers my question quite concisely. Many thanks!

korben69 · 21st July 2011, 11:20 AM

+1, don't forget to order Power Supply PCB too !
Top quality PCB

montre16 · 21st July 2011, 10:05 PM

I have ordered the both the amp and the power supply boards. The boards all look very high quality from the pics I have found; I'm quite excited about this purchase.

imix500 · 21st July 2011, 11:03 PM

Just thought I'd add my vote- I've been running Brian's boards as a mini for over 3 years of daily use without a hitch. I've also used five of his PSU boards in various projects. Really hard to beat the quality.

wirewiggler · 22nd July 2011, 04:22 AM

I have built up a few minis' from Brian's boards I seem to recall he had one of the 220 uf caps backwards on the silk screen, not sure if it was fixed.

Bill

20th July 2011, 06:26 PM	#1
montre16 diyAudio Member Join Date: May 2011	Where to start with Aleph Mini Greetings all, I am interested in building a 10w/channel mini Aleph power amp, such as KK's mini-A. I'm thinking this would be a nice amp to try with the new FH-MKIII's I'm building, and I suspect could also serve as a killer headphone amp. I have been lurking here for a while without posting. I must say that I very much enjoy reading the forum; the amount of time one can spend here is astounding. Anyway, I have spent a good deal of time poking around on the forum, but have not found any mention of a current North American source for PCBs for this amp. I know ChipAmp sells some Aleph boards, such as the ALEPH-TH-PCB, but their site is under construction and information on these boards somewhat sparse. Looking through the parts list, they seem to be for a much larger beast. I have looked around eBay also, and, unsurprisingly, found a lot of dirt-cheap pre-assembled boards available from China. These are admittedly tempting, but I'm not about to support those presumably illegitimate enterprises trying to capitalize on what I am sure is unapproved use of Nelson Pass' venerable name and intellectual property. I also would expect the quality to be less than stellar. Since I would like both a clean conscience and quality I control, these options are no option. Guidance would be appreciated. Thanks, montre16

20th July 2011, 07:25 PM	#2
sreten diyAudio Member Join Date: Nov 2003 Location: Brighton UK	Hi, What is your problem ? The link you posted has circuit boards for sale ... rgds, sreten. __________________ There is nothing so practical as a really good theory - Ludwig Boltzmann When your only tool is a hammer, every problem looks like a nail - Abraham Maslow

20th July 2011, 09:58 PM	#5
res07njc diyAudio Member Join Date: May 2005 Location: Tampa Fla	fyi, the chipamp boards were designed to build the Aleph from Mini to 60 watt. If it's mini, then you just save the unused boards until the devil gets your soul. Click on 'order' and you'll find all you need. And at that price.. wow. This board/project is thoroughly vetted among a 1000+ post group buy thread also. New Aleph Mini PCB GB Last edited by res07njc; 20th July 2011 at 10:12 PM. Reason: added info

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20th July 2011, 08:00 PM	#3
montre16 diyAudio Member Join Date: May 2011	Thanks for the reply. Let me clarify: Regarding the KK boards, I would rather not order from such a distance, which is why I specified that I was seeking a North American source. I provided that link simply to disambiguate which circuit I was hoping to implement. I have no problem buying the KK boards if they are the best and most practical option available to me, of course, but the price difference and between these and the ChipAmp Aleph boards, as well as the relative geographical proximity of ChipAmp, makes me want to investigate my options further. I guess I was hoping someone might provide something of a clarification as to precisely which schematic the ChipAmp Aleph boards correspond to; the only information I can seem to find on ChipAmp's site is a parts list which calls for 6 IRFP240's per channel, rather than the two indicated in the KK schematic. I apologise if I have not been sufficiently diligent in scouring the forum and site for answers, or if my inquiry is excessively noobish. Thanks, montre16

20th July 2011, 08:28 PM	#4
digits diyAudio Member Join Date: Apr 2011	Montre I will be doing a GB to produce a few mini A boards in the next month or so, provided I can actualy get forward for a change, just had a hectic week. The prototype is all done appart from adding the FETS, I hope to do some matching tommorrow to get a set.

21st July 2011, 11:20 AM	#7
korben69 diyAudio Member Join Date: Nov 2006 Location: Near Lyon	+1, don't forget to order Power Supply PCB too ! Top quality PCB

21st July 2011, 10:05 PM	#8
montre16 diyAudio Member Join Date: May 2011	I have ordered the both the amp and the power supply boards. The boards all look very high quality from the pics I have found; I'm quite excited about this purchase.

21st July 2011, 11:03 PM	#9
imix500 Proud Union Member diyAudio Member Join Date: Mar 2004 Location: Nashville, TN	Just thought I'd add my vote- I've been running Brian's boards as a mini for over 3 years of daily use without a hitch. I've also used five of his PSU boards in various projects. Really hard to beat the quality.

22nd July 2011, 04:22 AM	#10
wirewiggler diyAudio Member Join Date: Mar 2005 Location: Bakersfield Ca	I have built up a few minis' from Brian's boards I seem to recall he had one of the 220 uf caps backwards on the silk screen, not sure if it was fixed. Bill

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