Hi friends,
is there some of you that recognize this amp?
https://it.aliexpress.com/item/1005001337470583.html
in the bottom there is this label: AUDIO MD A5-AMP
I'm in serching of schematic for understand how to correctly power it
Thanks
is there some of you that recognize this amp?
https://it.aliexpress.com/item/1005001337470583.html
in the bottom there is this label: AUDIO MD A5-AMP
I'm in serching of schematic for understand how to correctly power it
Thanks
3rd and 4th lines of the instructions on the https://it.aliexpress.com/item/1005001337470583.html page.
"Tensione di alimentazione: AC dual 18V a dual 35V, DC ± 24V a ± 42V (quando la tensione è superiore a AC dual 32 o ± 42, utilizzare un condensatore con una tensione di tenuta di 63V)".
"Tensione di alimentazione: AC dual 18V a dual 35V, DC ± 24V a ± 42V (quando la tensione è superiore a AC dual 32 o ± 42, utilizzare un condensatore con una tensione di tenuta di 63V)".
Hi,
i think its similar to this Amp https://de.aliexpress.com/item/32847643038.html?spm=a2g0o.detail.pcDetailBottomMoreOtherSeller.12.60f3foTFfoTFmQ&gps-id=pcDetailBottomMoreOtherSeller&scm=1007.40050.354490.0&scm_id=1007.40050.354490.0&scm-url=1007.40050.354490.0&pvid=470bdb57-e838-4532-bae2-faef58b87375&_t=gps-id😛cDetailBottomMoreOtherSeller,scm-url:1007.40050.354490.0,pvid:470bdb57-e838-4532-bae2-faef58b87375,tpp_buckets:668#2846#8114#1999&pdp_npi=4@dis!EUR!41.03!38.17!!!43.07!40.07!@211b617a17128086013005714ea007!12000027809831222!rec!DE!!AB&utparam-url=scene😛cDetailBottomMoreOtherSeller|query_from:
The schematic follows D. Self, you can see by scrolling on the linked page. I have built such an amp, powered with a connex smps+-45 volt 500W. The sound is very good. Blameless Amp...because of the Sanken transistors the bias is adjustet to 65 mA in my amp.
I can not see the voltage of the capacitors on the board powersupply by looking to the pictures of your link. Perhaps only 50 volt ? I can understand the advice then...to change to 63 Volts if the amp is powerded with 35 Volt AC.
A picture of my amp....
The output coils were missing. I use 2µH with 10 ohm/5 watt in the output network.
Greets
Peter
i think its similar to this Amp https://de.aliexpress.com/item/32847643038.html?spm=a2g0o.detail.pcDetailBottomMoreOtherSeller.12.60f3foTFfoTFmQ&gps-id=pcDetailBottomMoreOtherSeller&scm=1007.40050.354490.0&scm_id=1007.40050.354490.0&scm-url=1007.40050.354490.0&pvid=470bdb57-e838-4532-bae2-faef58b87375&_t=gps-id😛cDetailBottomMoreOtherSeller,scm-url:1007.40050.354490.0,pvid:470bdb57-e838-4532-bae2-faef58b87375,tpp_buckets:668#2846#8114#1999&pdp_npi=4@dis!EUR!41.03!38.17!!!43.07!40.07!@211b617a17128086013005714ea007!12000027809831222!rec!DE!!AB&utparam-url=scene😛cDetailBottomMoreOtherSeller|query_from:
The schematic follows D. Self, you can see by scrolling on the linked page. I have built such an amp, powered with a connex smps+-45 volt 500W. The sound is very good. Blameless Amp...because of the Sanken transistors the bias is adjustet to 65 mA in my amp.
I can not see the voltage of the capacitors on the board powersupply by looking to the pictures of your link. Perhaps only 50 volt ? I can understand the advice then...to change to 63 Volts if the amp is powerded with 35 Volt AC.
A picture of my amp....
The output coils were missing. I use 2µH with 10 ohm/5 watt in the output network.
Greets
Peter
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