900W H-class PA Amp with Limiter

thank you sir...
2 x 70vac would then be too high for the amp...
 

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ok then...
now, i got the point...
im very sorry for asking too many questions...
im just 21 and im not an electronic engineer...
but i build my own amps for quite sometime...
thank you for the advice sir...
and i hope for more of your advice soon... 🙂

here is one of my DIY amps...
 

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eesbiboi said:
ok then...
now, i got the point...
im very sorry for asking too many questions...
im just 21 and im not an electronic engineer...
but i build my own amps for quite sometime...
thank you for the advice sir...
and i hope for more of your advice soon... 🙂

here is one of my DIY amps...
Click to expand...
Nice clean work. I can't see is there any protection in this amplifier?
Regards
 
Last edited:
tnx for the complement...
there is actually no protection circuit built in to it...
only a fuse was attached to it on the output terminal... 🙁
 
ok then...tnx...
i already have your schematic diagram bout it...
it's such a poor amp...
no protect, no limiter, only the power amp itself... 🙁
 
No, the "bump" is a turn-on transient. You can't use a triac clamp on an amp that makes a "bump" when you turn it on, because it will activate. On an amp that comes up quiet, you can.
 
wg_ski said:
No, the "bump" is a turn-on transient. You can't use a triac clamp on an amp that makes a "bump" when you turn it on, because it will activate. On an amp that comes up quiet, you can.
Click to expand...

is that the sound produce when i turn the amp on???...clicking the power switch on makes my speakers sound like "toobbb", even if the volumes are zero...tnx
 
eesbiboi said:
is that the sound produce when i turn the amp on???...clicking the power switch on makes my speakers sound like "toobbb", even if the volumes are zero...tnx
Click to expand...
Any sound "toobbb", "twak", "bump"... anti-click on DC protect turn speakers on with 5sec delay becouse of that.
 
hi apexaudio
greetings can you give some tips where likely problems
can occur some voltage test points
1 checking pcb once again for wrong polarity ofcomponents and shorts

thanking you
andrew lebon
 
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