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Medium Aleph 3 8ohm@20w.
Medium Aleph 3 8ohm@20w.
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Old 2nd July 2018, 01:58 PM   #101
thimios is offline thimios  Greece
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Originally Posted by tonimxp View Post
It is a dual mono clc filter, there are 16x22000uF of cap.
I don't believe that can be a psu problem.
Otherwise I don't need to decrease the gain but simply the input sensitivity.
Nice work!
Is the amplifier pcb for sharing?
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Old 2nd July 2018, 02:06 PM   #102
tonimxp is offline tonimxp  Italy
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Originally Posted by Extreme_Boky View Post
I see that you use star grounding. Check the pdf attached. It may give some guidance in that regard. There are also other clear explanations that could be useful.
Hi! Thanks for you advice, I will try to check as soon as.
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Old 2nd July 2018, 02:10 PM   #103
tonimxp is offline tonimxp  Italy
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Nice work!
Is the amplifier pcb for sharing?
I bought it on eBay.
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Old 2nd July 2018, 02:35 PM   #104
Zen Mod is offline Zen Mod  Serbia
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Medium Aleph 3 8ohm@20w.
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Originally Posted by tonimxp View Post
I just discovered that if I do not use the unbalanced input and therefore do not short (-in) signal to the gnd , the noise is reduced considerably. Obviously, this can not happen if you use unbalanced input because it reduces the input sensitivity and even the low frequencies are poor.

In any case I would like to know if the capacitors of the PSU are efficient, how can I do it?
what?

when you're using SE inputs (RCA) , you need to short neg input to gnd

when you're using balanced , logically - neg input is not shorted to GND

in both cases gain is pretty similar/equal and there can't be any difference in frequency domain
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Old 12th July 2018, 07:16 PM   #105
tonimxp is offline tonimxp  Italy
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Problem solved replaced 2x 4v7 (D1) with 1x9v1 low noise and now noise is nice!
Does someone try to adopt turbo in Aleph as F5 turbo?
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Old 12th July 2018, 08:44 PM   #106
Zen Mod is offline Zen Mod  Serbia
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......
Does someone try to adopt turbo in Aleph as F5 turbo?


Wakootalian

what you mean with that ?
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Old 12th July 2018, 09:09 PM   #107
tonimxp is offline tonimxp  Italy
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Wakootalian

what you mean with that ?
After beer
However... I ask if is possible add turbo in Aleph.
Thanks Alex..
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Old 12th July 2018, 09:56 PM   #108
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I wouldn't try that

if you need bigger amp , just build bigger one

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