| dantwomey |
First the facts. I have good soldering and very good hand and power tools skills. I also have a passing knowledge in electronics.
My goal. I'd like to do a DIY Aleph 5.
My question. Is this type of project reasoable for someone at my skill level?
I have the interest and I'd like to hear from some veteran Aleph'ers.
Regards,
Dan |
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| Peter Daniel |
| With your skills, you will have no problem. It is perfect project for a beginner. I wish they were around 20 years ago, when I was starting.;) Go for it. |
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| dantwomey |
| quote: | Originally posted by Peter Daniel
With your skills, you will have no problem. It is perfect project for a beginner. I wish they were around 20 years ago, when I was starting.;) Go for it. |
Could anyone suggest some links, parts list, etc.?
Regards,
Dan |
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| Peter Daniel |
There is a search function at a top of a screen. Just enter Aleph5 and see what you get. Read some topics that are of interest to you. Then, if you have specific question ask again.
I like this guy's schematics, very clear. http://web.vip.hr/pcb-design.vip/ He might even have parts list. If you need a board, buy from him or from Dale. Dale sells mached sets of Mosfets and boards as well. Find his offerings when you do search for member's name: "harvardian". |
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| Les |
Hi All I to would like to build a pair of the Aleph 5's but cannot find any circiut diagrams or case specifications.
Seen Quite a few pic's of them.
I have tried Peter Daniel's like but I just get an error in ie.
Peter Have you any info on the Aleph 5's that you could e-mail me or place in the forum. This would make me and I think many other's very happy.
PS Peter if you do live in Toronto then you live in the best city in the World.
Regards Les |
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| Les |
Could some kind person or person's please give me some advice on a good Pre-Amp for the Aleph 5.
Regards Les |
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| UrSv |
For the link to the great schematic there was a small error in the link (but not impossible to figure out since you had more than you need..):
http://web.vip.hr/pcb-design.vip/
As for the original info it is the service manuals at:
http://www.passlabs.com/aleph.htm
All the information is there and I think a search would give you enough information for at least a week of reading so no immediate need for any new post on Aleph 5...
As for a good preamp I think an Aleph P 1.7 or a BoSoZ (BLS) would be nice. The Aleph P is at the previous link and the BoSoZ can be found at http://www.passdiy.com/.
God Luck
UrSv |
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| mefinnis |
I also am a novice by site standards and would encourage you to try the Aleph5.
The few useful tips i have can be found on this website:
http://www.users.bigpond.net.au/mefinnis/passlabs/
The aleph4 and 5 pages may be useful.
Best of Luck,
Regards
Mark |
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| PedroPO |
Aleph 5 Is very easy amp to build, and if you have some electronic skills, this should be ok. You just need a little experience in populating PCB's.
All the hard work is in the aluminium division.
If you feel that you are a better metal worker then electronic expert then why don't you try Son of Zen? no pcb's all p2p wiring and all the componets (around 10) are mounted directly on the heatsink!
Good luck |
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| Les |
Hello There :)
Just a quick question :- )
Would it be possible to mount the FET's on the heatsink and connect them to the board with wire and if so what gauge of wire should be used ?????
Regard's Les (I must Be Mad) |
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| PedroPO |
yES. LOTS OF GUYS DO THAT
USE YOUR INSTINCT TO GUESS THE WIRE GAUGE |
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| Peter Daniel |
Pass Labs Gallery is a good place to gain ideas.;)
Connecting Fets with wire directly on a sink sounds like a good plan. I like to do it as well.
http://www.passdiy.com/gallery.htm |
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| Les |
Hi All (again) :)
Capacitors For Power Supply
On the curcuit Diagram the power supply uses 4 25,000uf Caps totaling 100,000uf. Is there another way of doing this .
ie having 6 caps totaling 100,000uf or Possably 8 totaling 100,000uf.
Any Ideas would be very greatfull and a diagram as well would be much apre.
Regard's Les |
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| UrSv |
Any way you can make it happen is the preferred solution, IMHO.
If you have 2 pieces of good 47.000 uF caps use them. If you have 20+ pieces of 4.700 uF use those. Look at the quality you are interested in and look what the different variations will cost. You will notice that there can easily be a huge difference in prices. Anything will work and what you prefer is often a matter of personal taste, price , space issues and others.
2 large ones is a minimum and any reasonable number of smaller ones is the maximum IMO. Mixing some small with a couple of bigger works to, it is the total capacity you're after. Just try and get the capacity you need. Some more is not bad either.
/UrSv |
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| Les |
Hi All :)
Thanks for the advice on the capacitors, next question's.
What voltage caps should be used and can one power supply run both channels in the Amp ??? |
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| Les |
Just to say sorry for not putting my name at the end.
Regard's Les |
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| Peter Daniel |
| The caps should be rated 25% more (at least) than expected voltage. One for two is OK. |
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| skaara |
| You can use one PSU for both channels. The caps should be rated 20-30% more than actual voltage on them. |
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| jag |
| quote: | Originally posted by Peter Daniel
The caps should be rated 25% more (at least) than expected voltage. One for two is OK. |
Really :(
This is what Nelson Pass mentioned in the Zenlite article:
The power supply capacitors are whatever big cans you want to get that are rated at the voltages you will be using.
The reason I ask is that I have already bought 50V caps for Zen4 power supply :bawling:
If they just fail peacefully (albeit earlier than expected), I will go ahead and use them. If on the other hand they are bound to explode violently, I will have to write them off to my stupidity and buy new ones. Pl advise. |
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| Peter Daniel |
I've been using caps at rated voltages and they will probably not explode, but life expectancy will be shorter.
For example, in my preamp I was running 8 caps rated 3,000u/40V at 40V supply rails. After 6 years, for some reason I measured the caps and they showed zero capacitance.;) |
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| skaara |
| Caps wont explode when used at their rated voltages, but you will have to change them faster as you would overrated ones.. |
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