Here is a link to this psu kit;
https://www.etsy.com/listing/1431637388/stereo-class-a-dual-rail-decoupled-power?click_key=097a64d22a512657d41751605e8a3a1d178ad04d:1431637388&click_sum=79ffaefd&ref=user_profile
and here is a link to it"s build guide; https://www.diyaudio.com/community/attachments/f5-new-orig-build-guide-1-0a-pdf.1312270/t
and here is a link to a recommended transformer for a stereo build { as opposed to mono blocks); https://www.antekinc.com/as-3220-300va-20v-transformer/
https://www.etsy.com/listing/1431637388/stereo-class-a-dual-rail-decoupled-power?click_key=097a64d22a512657d41751605e8a3a1d178ad04d:1431637388&click_sum=79ffaefd&ref=user_profile
and here is a link to it"s build guide; https://www.diyaudio.com/community/attachments/f5-new-orig-build-guide-1-0a-pdf.1312270/t
and here is a link to a recommended transformer for a stereo build { as opposed to mono blocks); https://www.antekinc.com/as-3220-300va-20v-transformer/
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Hi there. Totally new to power supply stuff. Ordered the Aleph Jzm and the Thatcher PSU Board. Trying to understand what I need to build the PSU. Looking at the transformer, the AnTek AS-3218 - 300VA 18V and AS-3220 - 300VA 20V are both sold out on AnTek's website. Questions:
1. Is there a range of transformers that will work with this board?
2. What transformer is best?
3. I am completely inexperienced with AnTek, do they restock regularly?
4. Any other brand recommendations or other sites to purchase from?
5. I was going to go with the 47k caps because @rhthatcher noted in one of the posts on the Aleph Jzm forum that they would "sound beautiful", but some additional guidance on what a "preferred" parts list would be super helpful for an idiot like me.
Thanks for any help anyone can provide.
Jim.
1. Is there a range of transformers that will work with this board?
2. What transformer is best?
3. I am completely inexperienced with AnTek, do they restock regularly?
4. Any other brand recommendations or other sites to purchase from?
5. I was going to go with the 47k caps because @rhthatcher noted in one of the posts on the Aleph Jzm forum that they would "sound beautiful", but some additional guidance on what a "preferred" parts list would be super helpful for an idiot like me.
Thanks for any help anyone can provide.
Jim.
Parts list is in this build doc:
https://www.diyaudio.com/community/attachments/f5-new-orig-build-guide-1-0a-pdf.1312270/t
I suggest a call to Antek. Sometimes the website stock quantity isn't up to date in real time.
AS-3218 or AS-3220 are both great choices.
You could also go up to the equivalent 400VA if they're out of stock of the 300VA. AS-4218 or AS-4220
If you go for the 20V secondaries, get 35V caps.
Here's a 47kuF / 25V option:
https://www.digikey.com/en/products/detail/cornell-dubilier-knowles/380LX473M025A052/1699661
And a 47kuF / 35V option:
https://www.digikey.com/en/products/detail/cornell-dubilier-knowles/380LX473M035A082/1699662
I post these 2 because I've had fantastic experience with the CDE 380LX series caps, they are in stock at high quantity levels, they fit the boards (10mm lead spacing and 35mm Diameter), and the price is reasonable. There are more options out there with different capacitance, from different sellers, different manufactures, etc. These are only 2 examples. The build doc has additional options. And I'm sure some searches on DK, Mouser, Arrow, TME, Reichelt, or your favorite part supplier will all lead to caps that will do a great job in this application.
https://www.diyaudio.com/community/attachments/f5-new-orig-build-guide-1-0a-pdf.1312270/t
I suggest a call to Antek. Sometimes the website stock quantity isn't up to date in real time.
AS-3218 or AS-3220 are both great choices.
You could also go up to the equivalent 400VA if they're out of stock of the 300VA. AS-4218 or AS-4220
If you go for the 20V secondaries, get 35V caps.
Here's a 47kuF / 25V option:
https://www.digikey.com/en/products/detail/cornell-dubilier-knowles/380LX473M025A052/1699661
And a 47kuF / 35V option:
https://www.digikey.com/en/products/detail/cornell-dubilier-knowles/380LX473M035A082/1699662
I post these 2 because I've had fantastic experience with the CDE 380LX series caps, they are in stock at high quantity levels, they fit the boards (10mm lead spacing and 35mm Diameter), and the price is reasonable. There are more options out there with different capacitance, from different sellers, different manufactures, etc. These are only 2 examples. The build doc has additional options. And I'm sure some searches on DK, Mouser, Arrow, TME, Reichelt, or your favorite part supplier will all lead to caps that will do a great job in this application.
Thanks for the super fast response and I appreciate the info. Is there any advantage to using the 300VA vs the 400VA transformers? (Other than about $7.) Likewise 18V vs. 20V? You have a completely blank slate in my knowledge about circuits and circuit design. I don't mind waiting for the "right" stuff to be in stock or paying a couple extra bucks if the sound would be appreciably better. Thanks again for all of the info, this is a big help and I am really looking forward to the build.
Jim.
Jim.
Summer business has gotten in the way of me starting my build. I did manage to get the Antek 20v Trans before they sold out. Also some 35v rated caps for the psu board since I am using a 20v Trans. You need eight but you get a price break from Digi Key for ordering ten. I am still waiting for the chassis to come from Italy. When I start on my psu I will post some pics and derails.
Thanks all. I reached out to AnTek as @rhthatcher suggested and the guy on the phone said they would all be back in stock by the end of the week. So I bought all of the stuff from the parts list (from DigiKey) assuming I will be able to pick up the AS-3218 transformer shortly. I purchased the 47kuF 25V caps shown above which were cheaper than the parts list caps. Hopefully, no reduction in sound quality. Thanks again.
Jim.
Jim.
I've decided to go with a dual mono power supply (rhthatcher's W12 CRCRC Dual Rail Power Supply Kit) for my Aleph Jzm.
Will the Antek AS-2218 - 200VA or AS-2220 - 200VA have enough VA?
Will the Antek AS-2218 - 200VA or AS-2220 - 200VA have enough VA?
200va per channel on the W12 dual mono is perfect. 18 or 20v - up to you. If you go 20v get the 35v caps.
Here's a digikey cart/order csv with everything you need (pretty sure) with some spares and whatnot.
Based on the BOM in the build guide (35V, 33k filter caps)
Hope this helps someone
Based on the BOM in the build guide (35V, 33k filter caps)
Hope this helps someone
question: what is the advantage / purpose of building a "dual mono" power supply? I ask b/c I'm building a single Aleph Jzm for use in a bi-amped set up and am wondering if It could be advantageous to build (2) Aleph jzm amplifiers to power the woofer and mids and rely on a 3rd amplifier to power the tweeters.....
Dual mono is effectively monoblocks in one chassis. So all reading you can do about stereo vs monoblocks will answer the question of why go one way or another.
Multi amping with an amp per driver is another discussion.
I have a small system with aleph 30 monos driving Tannoys. And another fully active with 5 channels, each channel with its own power supply.
Multi amping with an amp per driver is another discussion.
I have a small system with aleph 30 monos driving Tannoys. And another fully active with 5 channels, each channel with its own power supply.
thanks - that answers my initial question. Now I need to figure out how to build dual mono power supply for the AlephJzm build
That's easy. What chassis are you using? I have 2 options if you're interested. 2x V8 PCBs or 1x W12 PCBs. 2x 200VA donuts for either solution.
V8 and W12 kits are in the same Etsy store linked in post #1 here, or shoot me a PM.
In the Esty store's description of each board set you'll find a link back to DIYAudio with a build guide for each. Or go to the bottom of post #1 here and find the guide in PDF form:
https://www.diyaudio.com/community/...or-modern-ums-chassis-builders-thread.382316/
V8 and W12 kits are in the same Etsy store linked in post #1 here, or shoot me a PM.
In the Esty store's description of each board set you'll find a link back to DIYAudio with a build guide for each. Or go to the bottom of post #1 here and find the guide in PDF form:
https://www.diyaudio.com/community/...or-modern-ums-chassis-builders-thread.382316/
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@motosapien - could you edit post #1 to link to the PSU build guide's latest rev: F5 New Orig Build Guide-1.0b.pdf
The new rev covers wiring for 240V mains applications.
Got to post #1 of this thread:
https://www.diyaudio.com/community/...or-modern-ums-chassis-builders-thread.382316/
Download this file attached to the bottom of post #1: F5 New Orig Build Guide-1.0b.pdf
The new rev covers wiring for 240V mains applications.
Got to post #1 of this thread:
https://www.diyaudio.com/community/...or-modern-ums-chassis-builders-thread.382316/
Download this file attached to the bottom of post #1: F5 New Orig Build Guide-1.0b.pdf
hi,
Just curious on anyone's opinion on what power supply to use to build the best sounding Aleph Jzm. I am definitely using the new Pass DIY Chassis (because it is ordered and paid for). That being my only non-negotiable, should I look at the stereo power supply, the V8 dual mono or the W12 dual mono? I am driving Zu Soul Supreme speakers that are pretty sensitive, if that helps form an opinion. I have no idea on how any of these would affect the sound quality, I just was just going with the F5 new original stereo because that was what was in the build guide and I am a noob.
Thanks for your opinion.
Jim.
Just curious on anyone's opinion on what power supply to use to build the best sounding Aleph Jzm. I am definitely using the new Pass DIY Chassis (because it is ordered and paid for). That being my only non-negotiable, should I look at the stereo power supply, the V8 dual mono or the W12 dual mono? I am driving Zu Soul Supreme speakers that are pretty sensitive, if that helps form an opinion. I have no idea on how any of these would affect the sound quality, I just was just going with the F5 new original stereo because that was what was in the build guide and I am a noob.
Thanks for your opinion.
Jim.
I can't say for sure as I don't have dual mono to compare with, however I would expect better channel separation than the Stereo Dual Rail. I don't think you can go wrong with any of the three options you listed. If you do want to go down the dual mono path, I'd expect W12 or V8 are going to be the same sound wise. Maybe ponder a few things...
- V8 has room for 2 more caps per side, but also takes up more room.
- You will need twice the parts with dual mono and that is directly proportional to cost.
- Each side will need a separate fuse. Get ready to possibly drill the back plate for those.
- It's going to be more challenging than the Stereo Dual, especially for your first build, but not insurmountable in any way.
Hi there,
@birdbox thanks so much for your input and the great photos. Couple more questions if you don't mind:
1. Is it as simple as more capacitors equals better sound? Or are the only benefits to the dual mono options come from the separate transformers?
2. Not sure what chassis you are using, any thoughts on going V8 dual mono on the PassDIY chassis (listed as a 4U/400 Dissipante Deluxe) for the Aleph Jzm, like fit-wise?
3. There are no mentions of fuses in the build guides, any guidance you can provide (as it seems like a great idea)?
There are just so many options to consider with this build, I work better within constraints, apparently.
Thanks again for your opinion.
Jim.
@birdbox thanks so much for your input and the great photos. Couple more questions if you don't mind:
1. Is it as simple as more capacitors equals better sound? Or are the only benefits to the dual mono options come from the separate transformers?
2. Not sure what chassis you are using, any thoughts on going V8 dual mono on the PassDIY chassis (listed as a 4U/400 Dissipante Deluxe) for the Aleph Jzm, like fit-wise?
3. There are no mentions of fuses in the build guides, any guidance you can provide (as it seems like a great idea)?
There are just so many options to consider with this build, I work better within constraints, apparently.
Thanks again for your opinion.
Jim.
Dual mono vs stereo is the same as monoblock vs stereo. There’s lots written on this topic. The added party trick on both V8 and W12 is an additional RC filter. This added filter knocks down ripple (good) and also lowers voltage a bit (the inevitable tradeoff).
V8 is actually CCRCRC
W12 is CRCRC
To get a good idea of what the extra RC filter does and what extra cap in the first stage does - play around in Duncan PSU designer tool.
4U/400 with 2 donuts and 2xV8 is a good fit.
If my V8 and V12 build guides don’t mention a fuse per channel then I know what needs to be updated asap.
V8 is actually CCRCRC
W12 is CRCRC
To get a good idea of what the extra RC filter does and what extra cap in the first stage does - play around in Duncan PSU designer tool.
4U/400 with 2 donuts and 2xV8 is a good fit.
If my V8 and V12 build guides don’t mention a fuse per channel then I know what needs to be updated asap.
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Hi there,
@rhthatcher thanks for your prompt reply. Your comments are a really big help. Regarding fuses - I was referencing the build guides for the dual stereo and the Aleph Jzm. I haven't reviewed the build guides for the V8 or W12 yet. I guess maybe the fuses are not necessary for the dual stereo.
Thanks again.
Jim.
@rhthatcher thanks for your prompt reply. Your comments are a really big help. Regarding fuses - I was referencing the build guides for the dual stereo and the Aleph Jzm. I haven't reviewed the build guides for the V8 or W12 yet. I guess maybe the fuses are not necessary for the dual stereo.
Thanks again.
Jim.