hello all;,
recently have build a non-os parallel tda1541as1 dac..experincing here "pop" there "pop" at high frequency signal..example vocal ..is this what ppl call high freqeuncy roll off?? have no filtering at all at analogue out stage..SE 5687 tube stage..pls advice..would a filter helps?? or is it something else?
it is not cold solder join..have triple check already.
pls advice.thanks in advance,.
tone.
recently have build a non-os parallel tda1541as1 dac..experincing here "pop" there "pop" at high frequency signal..example vocal ..is this what ppl call high freqeuncy roll off?? have no filtering at all at analogue out stage..SE 5687 tube stage..pls advice..would a filter helps?? or is it something else?
it is not cold solder join..have triple check already.
pls advice.thanks in advance,.
tone.
Could be sample slipping or random electrical noise. Maybe you can hook up your scope and watch the power rails when the pop happens. Does the unit have a metal chassis? I have all kinds of pops and clicks from boards with no chassis.
Sample slip is a bigger problem, but rare.
Sample slip is a bigger problem, but rare.
Re: problem fixed
if you can actually hear the pops, an analogue filter will not help
it may be a timing issue
If you warm up / cool down the whole circuit, do the pops disappear ?
Guido
tone said:
if you can actually hear the pops, an analogue filter will not help
it may be a timing issue
If you warm up / cool down the whole circuit, do the pops disappear ?
Guido
pop
hi guido,
i do not know what happen to it..as i add two inductor 100mH & 47mH with 1n silvermica in btw..the "pop" seem to go away..im confuse😕
tone.
hi guido,
i do not know what happen to it..as i add two inductor 100mH & 47mH with 1n silvermica in btw..the "pop" seem to go away..im confuse😕
tone.
pop
hi guido,
i have the inductor at hand..just to try it out...what value u would recommand>? pls advice..thanks.
tone.
hi guido,
i have the inductor at hand..just to try it out...what value u would recommand>? pls advice..thanks.
tone.
Re: pop
Hello Tone
You may follow the design we did for PCM63. Is TDA1541 a current output DAC ?
The schematics can be found here
http://members.chello.nl/~m.heijligers/DAChtml/dactop.htm
go to "I want to build this DAC" and then for the digital schematics, I think it is Dig circuit C or something
succes
tone said:
Hello Tone
You may follow the design we did for PCM63. Is TDA1541 a current output DAC ?
The schematics can be found here
http://members.chello.nl/~m.heijligers/DAChtml/dactop.htm
go to "I want to build this DAC" and then for the digital schematics, I think it is Dig circuit C or something
succes
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