I'm looking to build an Aleph Mini, currently trying to gather parts to order, for now I have found:
https://www.ebay.co.uk/itm/266392011176?mkevt=1&mkcid=1&mkrid=710-53481-19255-0 - the pcb
https://www.ebay.com/itm/156560013829 - mosfets
alternatively, but I'm not sure if it'd be best - https://www.ebay.com/itm/115126018088?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=wGG0QMocRHa
https://a.aliexpress.com/_EIU0SPC - enclosure
I'm also not quite sure about the PSU, what board / transformer should I use, and how to wire the potentiometer.
https://www.ebay.co.uk/itm/266392011176?mkevt=1&mkcid=1&mkrid=710-53481-19255-0 - the pcb
https://www.ebay.com/itm/156560013829 - mosfets
alternatively, but I'm not sure if it'd be best - https://www.ebay.com/itm/115126018088?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=wGG0QMocRHa
https://a.aliexpress.com/_EIU0SPC - enclosure
I'm also not quite sure about the PSU, what board / transformer should I use, and how to wire the potentiometer.
ACA or F5M or even Aleph Jzm (slightly down with rails and Iq) are better choices
besides having almost everything regarding how-to already on disposal, depending of your choice, it can be ubersimple or just simple
and, you'll support community and jolly people with your hard earned pounds
in general, nobody here likes straight knock-offs made without permission, while those circulating/available here are made with Pa's blessing
regarding case - when you're done with prediction/preference how many watts of heat you want in your amp of choice, then it's right time to ask for advice about case/size
besides having almost everything regarding how-to already on disposal, depending of your choice, it can be ubersimple or just simple
and, you'll support community and jolly people with your hard earned pounds
in general, nobody here likes straight knock-offs made without permission, while those circulating/available here are made with Pa's blessing
regarding case - when you're done with prediction/preference how many watts of heat you want in your amp of choice, then it's right time to ask for advice about case/size
which reminds me - except mine ........
though, I like to think that I'm same as Obelix ......... while he fell as Kiddo in Magic Potion Cauldron, I like to think that I fell as Kiddo in Papa's Blessing Cauldron
even if I'm under eternal Papa's disgrace, after that
Yeh, follow Zen Mods advice, you are asking for trouble sourcing this stuff from China, fakes and counterfeits galore, not to mention the blatant disregard for intellectual property and patents.
The Aleph (mini) has a differential input stage, driving a N channel MOSFET, loaded by a NMOS dynamic current source.
The closest "modern" design to that is the J2.
ACA or F5 variants are completely different topology.
For PCB, maybe it is worth taking a look here :
www.diyaudio.com/community/threads/anybody-interested-in-aleph-x-and-aleph-mini-pcbs.412883/
https://jimsaudio.com/10w-se-mosfet-pure-class-a-stereo-amplifier-pcb/
See also :
www.diyaudio.com/community/threads/anybody-interested-in-aleph-x-and-aleph-mini-pcbs.412883/post-7688984
For MOSFETs, maybe ask the people here :
www.diyaudio.com/community/threads/wtb-genuine-irfp044.365966/
For the enclosure, we used the BZ3209 heatsink case for our Le Monster 2024, which has similar dissipation as the Aleph Mini :
www.diyaudio.com/community/threads/hiraga-le-monstre-2024.413301/post-7879347
Patrick
The closest "modern" design to that is the J2.
ACA or F5 variants are completely different topology.
For PCB, maybe it is worth taking a look here :
www.diyaudio.com/community/threads/anybody-interested-in-aleph-x-and-aleph-mini-pcbs.412883/
https://jimsaudio.com/10w-se-mosfet-pure-class-a-stereo-amplifier-pcb/
See also :
www.diyaudio.com/community/threads/anybody-interested-in-aleph-x-and-aleph-mini-pcbs.412883/post-7688984
For MOSFETs, maybe ask the people here :
www.diyaudio.com/community/threads/wtb-genuine-irfp044.365966/
For the enclosure, we used the BZ3209 heatsink case for our Le Monster 2024, which has similar dissipation as the Aleph Mini :
www.diyaudio.com/community/threads/hiraga-le-monstre-2024.413301/post-7879347
Patrick
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If you like the J2 topology but do not want to pay for the Semisouth's, you can also consider the UDNeSS :
www.diyaudio.com/community/threads/udness-or-you-dont-need-semisouths.343164/
All the parts are still available at Mouser, Digikey, etc.
And Gerber files are published, so you can order your own :
www.diyaudio.com/community/threads/udness-or-you-dont-need-semisouths.343164/post-6014673
See also :
www.diyaudio.com/community/threads/udness-or-you-dont-need-semisouths.343164/post-6023731
Patrick
www.diyaudio.com/community/threads/udness-or-you-dont-need-semisouths.343164/
All the parts are still available at Mouser, Digikey, etc.
And Gerber files are published, so you can order your own :
www.diyaudio.com/community/threads/udness-or-you-dont-need-semisouths.343164/post-6014673
See also :
www.diyaudio.com/community/threads/udness-or-you-dont-need-semisouths.343164/post-6023731
Patrick
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Thank you, I'm relatively new to the forum and I can't seem to find any documentation / parts list for the udness , could you please help provide me with one
See post #1 - there is a pdf for Aleph Mini builds. Drop me a PM if you’re interested in boards and matched transistors.
I've decided to buy the diyaudio store f5m board, any affordable enclosure recommendations (preferably with a button or at least a switch in the back) ?
The F5m is a great amp. My suggestion, build both! I like the F5m more for my purposes as it is a great all arounder. Push pull so it has a small amount of muscle, a class B envelope for slightly less efficient speakers, JFETS 🙂
The Aleph is less detailed but sweet and syrupy. The IRFP parts seem to offer a bit of mid range texture from my experiences.
Each design can lead you down a path of experimentation. The F5m can have different outputs for instance. Set up for 3rd dominant harmonic distortion or 2nd. Different feedback levels... The Aleph can use Toshiba parts for the differential pair. But these are beyond the scope of just checking your first build off of the list.
Regarding the cases, The 4U 300mm is a decent value. I believe they altered the front plate so that there is an indexing hole for a switch. At least I thought that it was talked about. You can also have them drill a hole out for the switch of your choosing for a fee. The nice thing about that case is that since this is your entry into amplifier building, the holes are predrilled for the mosfets.
Also, you should be able to use the F5m power supply board for both the Aleph Mini (or 30, or J) so you can build the power supply out and have it ready for many other amps.
Randy Thatcher (above) is your go to source for mosfets on the Aleph. He has matched quite a few.
The Aleph is less detailed but sweet and syrupy. The IRFP parts seem to offer a bit of mid range texture from my experiences.
Each design can lead you down a path of experimentation. The F5m can have different outputs for instance. Set up for 3rd dominant harmonic distortion or 2nd. Different feedback levels... The Aleph can use Toshiba parts for the differential pair. But these are beyond the scope of just checking your first build off of the list.
Regarding the cases, The 4U 300mm is a decent value. I believe they altered the front plate so that there is an indexing hole for a switch. At least I thought that it was talked about. You can also have them drill a hole out for the switch of your choosing for a fee. The nice thing about that case is that since this is your entry into amplifier building, the holes are predrilled for the mosfets.
Also, you should be able to use the F5m power supply board for both the Aleph Mini (or 30, or J) so you can build the power supply out and have it ready for many other amps.
Randy Thatcher (above) is your go to source for mosfets on the Aleph. He has matched quite a few.
What is the current rating for the sigma unit vs current draw for 2 F5m channels? Why not use the proven F5m power supply?
My friend has a spare one, if i’m not mistaken it’s this exact board:
https://a.aliexpress.com/_EuAtZcA
https://a.aliexpress.com/_EuAtZcA
Does the F5M PSU kit contain a 230V hookup board? I only see a 120V one in the showcase pictures.