i am following this psu schematics :
this is the worse psu i ever tried!!!
very very big distortion, noise, and hum....
An externally hosted image should be here but it was not working when we last tested it.
this is the worse psu i ever tried!!!
very very big distortion, noise, and hum....
nothing wrong electrically with it , but physically you need to make it completely opposite
star gnd must be positioned exactly between C14 and C15 (for R channel) and exactly between C16 and C17 (for L channel)
besides that , you need to make a bridge with fat wire between these two points
it's much better having two bridges config - Papa explained reasons for that (avoiding any possibility that nonsymmetrical load induce buzz in windings) ....... and - if having two (per channel dedicated) C banks , then is best that each bank have own 2 bridges
that way one can have almost dual mono approach , without need for mentioned fat wire between two central grounds
star gnd must be positioned exactly between C14 and C15 (for R channel) and exactly between C16 and C17 (for L channel)
besides that , you need to make a bridge with fat wire between these two points
it's much better having two bridges config - Papa explained reasons for that (avoiding any possibility that nonsymmetrical load induce buzz in windings) ....... and - if having two (per channel dedicated) C banks , then is best that each bank have own 2 bridges
that way one can have almost dual mono approach , without need for mentioned fat wire between two central grounds
exactly zen mod,
star ground located at transformers CT or between two bridge diodes was a real bad idea...
i am trying some psu schematics, but no one can real eliminates hum and hiss,
do you have one reliable psu schematics?
star ground located at transformers CT or between two bridge diodes was a real bad idea...
i am trying some psu schematics, but no one can real eliminates hum and hiss,
do you have one reliable psu schematics?
Hi, guy
Here're my oldy but goody Aleph 30
Thanks
Anadigit
Here're my oldy but goody Aleph 30
Thanks
Anadigit
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
My suggests - some years later ... sorry-)
Do NOT use channel-separated psus!!!!!!!!
Do not use thick wire, or copper-plates!!!!
Do not use mounts.
Do not crimp.
Do not use unlaqueured lace-wire.
Do use ca. 1,5 mm solid core. Not more!
How to bridge caps: 20 mF - 2 mF - 0,2 mF - and so on! The same types! One time per psu - an aleph has two, + and -, is okay.
Better - the same capacity as example: 10 x 2 mF or so, at ONE circuit,-!!!!!
Sometimes it is useful to try some points to set the "ground-star". As near as possible at amps and last caps I would try first.
And many/much more,-)
LG
Do NOT use channel-separated psus!!!!!!!!
Do not use thick wire, or copper-plates!!!!
Do not use mounts.
Do not crimp.
Do not use unlaqueured lace-wire.
Do use ca. 1,5 mm solid core. Not more!
How to bridge caps: 20 mF - 2 mF - 0,2 mF - and so on! The same types! One time per psu - an aleph has two, + and -, is okay.
Better - the same capacity as example: 10 x 2 mF or so, at ONE circuit,-!!!!!
Sometimes it is useful to try some points to set the "ground-star". As near as possible at amps and last caps I would try first.
And many/much more,-)
LG
Do NOT use channel-separated psus!!!!!!!!
And why not go the dual mono way?
maybe you could explain your tipps?
And why not go the dual mono way?
maybe you could explain your tipps?
Simple: You have not tried this - your answer would be an other,-)
The discourse about sense, about hearing later.
LG
The discourse about sense, about hearing later.
LG
Yes i have tried and have heard no significant difference.
2 Aleph J one with dual mono, the other with one for all psu.
Dual mono i use for better feeling and a peaceful sleep😀
Or if space is limited if one 1,2kV tranny is to big. And 2 0,6kV would fit stacked.
2 Aleph J one with dual mono, the other with one for all psu.
Dual mono i use for better feeling and a peaceful sleep😀
Or if space is limited if one 1,2kV tranny is to big. And 2 0,6kV would fit stacked.
Do not try (with) different pairs of amps. "Same" amps, devices, get/have another "signature" of sound.
Try this: A pair of mono-amps, listen a while with separate psus, than connect the psus. May be, you set a switch to compare.
LG
Try this: A pair of mono-amps, listen a while with separate psus, than connect the psus. May be, you set a switch to compare.
LG
Another way to set up dual mono in a stereo chassis
Notice the bridge rectifier independently isolating each channel psu ground from chassis ground.
You can also do it with independent CL60 thermistors as seen around passdiy (and mentioned by ZM elsewhere)
Notice the bridge rectifier independently isolating each channel psu ground from chassis ground.
You can also do it with independent CL60 thermistors as seen around passdiy (and mentioned by ZM elsewhere)
Yes you are right i wa in hurry 1,2 kVA = kW i meant.
Figure 8 Shows a regulated supply. Dont know how you make it dual mono?
Try this: A pair of mono-amps, listen......
Sorry no time for experiments at the moment. I,m ultra happy if i get my Aleph 60 done this year.
The only reason i asked why not to use channel-separated psus is, i will do exactly that in my build.
And if your explanation would have been conclusive maybe i have changed my plans.
You repeat the same supply and where you see the box labelled Other Channel Gnd that is where the other PSU ground is connected.
Forget the regulation, the same principle applies to CRC supply too.
Yes thats clear, i have done it this way too. I thougt you would make a dual mono out of the regulated
No problem to build mono-psus and to connect per wire than. Set an extra jack (with "two channels") per amp before you will finish.
But note (the/some) other suggests to get a homogen, clear working psu.-)
And think about: How to set many devices (in a pair Aleph 60 are, as example, 4 x 6 End-Transen parallel,-?) at ONE circuit,-! It IS! important,-!
LG
But note (the/some) other suggests to get a homogen, clear working psu.-)
And think about: How to set many devices (in a pair Aleph 60 are, as example, 4 x 6 End-Transen parallel,-?) at ONE circuit,-! It IS! important,-!
LG
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Why an Aleph 60? Do you want organize concerts or do you have unefficient speakers - 80 dB/W/m - or do you live in a hall?
May be, an Aleph 3 or Mini-Aleph is the better choice.
May be, an "Aleph-Zen" is the better choice: ONE psu, without different-amp in feedback.
Much more better: "Zen-XA".
What sort of speakers do you have? Multi-way? In big wooden cases?
LG
May be, an Aleph 3 or Mini-Aleph is the better choice.
May be, an "Aleph-Zen" is the better choice: ONE psu, without different-amp in feedback.
Much more better: "Zen-XA".
What sort of speakers do you have? Multi-way? In big wooden cases?
LG
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