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Old 12th April 2004, 08:24 PM   #1
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Default New Aleph 5 coming up!!

Finally I finished PS for Aleph 5. It's a dual mono with 132.000uf per channel. Toroids are 350VA 28-0-28.
Now I have a question. One rail shows 37V and the other one 37.5V. Is it a problem? Will I be able to hear it? Will I get more gain on one channel?
One more question. Do I have to move my star grounding point far away from the mains cable (inside the chasis) or it's not so imortant.
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Old 12th April 2004, 08:25 PM   #2
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One more
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Old 12th April 2004, 08:28 PM   #3
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Here is the PCB. This is an old picture. Now everything is soldered to the PCB and it's ready for mounting. Waiting for chasis.
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Old 12th April 2004, 09:13 PM   #4
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hi, when you say you get 37 V on one rail and 37.5 on the other was there any load on the output of the transformers, as this will probably drop both voltages down a littel and may bring them more inline with one another. If however, you mean that on one trasformer the voltage on both positive and negative rails is different (so the two channels have slightly different supply voltages) the you should not hear any difference as the gain will be set in the circuit components, not by the power suply voltages.

On a littel aside though, where abouts did you get your riken resistors from, and were they very expensive at all?
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Old 12th April 2004, 09:30 PM   #5
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I bought Rikens at www.partsconnexion.com. They were $2.40 a piece. They sound real good, very natural. I bought a bunch of them together with my friend. I'm also making Aleph P 1.7 so I'll have some leftovers for it.
You can definitely spend few extra bucks to buy Rikens for signal path (not to put them all over the place like I did, because it's just stupid to put Riken for LED).
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Old 12th April 2004, 09:54 PM   #6
jleaman is offline jleaman  Belgium
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Looking Good keep up that great work.
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Old 12th April 2004, 10:05 PM   #7
Jaac is offline Jaac  Netherlands
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aaah there are still some aleph 5 builders left most are turning to the X-side of the aleph

well done looks good

gr Jaac
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Old 12th April 2004, 11:06 PM   #8
AJT is offline AJT  Philippines
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Default very nice!

Quote:
Finally I finished PS for Aleph 5. It's a dual mono with 132.000uf per channel. Toroids are 350VA 28-0-28.
Now I have a question. One rail shows 37V and the other one 37.5V. Is it a problem? Will I be able to hear it? Will I get more gain on one channel?
i doubt, the 0.5volt difference will be audible, more of a nuisance to some i'd say....that is why bifilliar winding of the secondary windings of your traffo will make rails equal...
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Old 12th April 2004, 11:35 PM   #9
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Looking very, very nice. Keep up the good work!
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Old 13th April 2004, 02:25 PM   #10
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Quote:
One more question. Do I have to move my star grounding point far away from the mains cable (inside the chasis) or it's not so imortant.
I finished my Aleph 5 in Jan. 2004 and the sound is now getting better and better. In my case, I put it in the middle and no humm or buzz sound whatsoever, even when I put my ear near my speaker.

You can see it here:
http://www.penguinlovers.net/audio/aleph5_proj.html

Thomas
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