For the 4A fuse on the amplifier PCB, which response speed would be best? Fast, medium, slow and would it be best glass or ceramic? I was actually thinking of bypassing them since I don't like to use fuses in PSUs just afraid it could affect the current flow...? I do use them on the AC line though..
Thanks
Do
Thanks
Do
Most amplifiers I build don't use them on the PSU, just the AC line and I never had a single accident. I'll put them in since they're part of the design but I might end up bypassing them at a later time once I know the amp is properly setup and stable.
Thanks
Do
Hi Do,
They don't affect current flow until they open. There isn't any sane reason to omit your DC supply fuses.
This though might stem from ads depicting "audio fuses" that sound better. Now, if you put them in series with the speakers, they most definitely will adversely affect the sound quality. But that does not extend to the power supply.
-Chris
They don't affect current flow until they open. There isn't any sane reason to omit your DC supply fuses.
This though might stem from ads depicting "audio fuses" that sound better. Now, if you put them in series with the speakers, they most definitely will adversely affect the sound quality. But that does not extend to the power supply.
-Chris
Hmmm.... I'm not getting more than +/-9.75Vdc on the output of this shunt... Input is 34Vac and after the rectifiers it is almost +/-44.5Vdc
I'm sure I double checked all values before soldering. Same issue on both shunts... This sounds like a bad value/part somewhere...
Gonna have to check this in the morning
Do
... Just realized I put the wrong zener value... I believe it should be a 36V Zener?
I'm sure I double checked all values before soldering. Same issue on both shunts... This sounds like a bad value/part somewhere...
Gonna have to check this in the morning
Do
... Just realized I put the wrong zener value... I believe it should be a 36V Zener?
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I have to agree with you on this. It says Z036 and after 7.5... I thought it meant a 7.5V Zener but in reality a 36V Zener. Would have been easy to just write Zener 36V instead. Anyways, not expensive but shipping is not cheap under 100$.
Do
Good news!
Got the first module powered up, adjusted and tested. Everything is working nicely and nice music is coming out!
Still have a few little things to work on but bias is set properly and very stable, DC offset is <1mV. Amplifier is totally silent when speaker load is installed, using my ears as instrument.
Do
Got the first module powered up, adjusted and tested. Everything is working nicely and nice music is coming out!
Still have a few little things to work on but bias is set properly and very stable, DC offset is <1mV. Amplifier is totally silent when speaker load is installed, using my ears as instrument.
Do
Good news!
Got the first module powered up, adjusted and tested. Everything is working nicely and nice music is coming out!
Still have a few little things to work on but bias is set properly and very stable, DC offset is <1mV. Amplifier is totally silent when speaker load is installed, using my ears as instrument.
Do
Well done Do thats great news!
Good news!
Got the first module powered up, adjusted and tested. Everything is working nicely and nice music is coming out!
Still have a few little things to work on but bias is set properly and very stable, DC offset is <1mV. Amplifier is totally silent when speaker load is installed, using my ears as instrument.
Do
Excellent! I'd better get moving on my build. Look forward to your listening impressions.
BK
Second module is up and playing music! Bass seems to be tight and fast, very well controlled. But this is just a test speaker for now.
Now I have to assemble everything in the test chassis and give it a full listening session before end of day Saturday because I'm bringing it to the DIY 2017 day in Montreal.
I just wished I had time to finish the DCG3 as well but... Not enough time
Ciao!
Do
Now I have to assemble everything in the test chassis and give it a full listening session before end of day Saturday because I'm bringing it to the DIY 2017 day in Montreal.
I just wished I had time to finish the DCG3 as well but... Not enough time
Ciao!
Do
