Haven't measured it but it is pleanty loud. I took the amp to the local Sound Advice store to audition some speakers. It filled the 15x15 sound room when connected to a pair of martin logan electrostatics. I have 90db efficiency speakers connected to it and haven't turned it up past about 20% on the volume.vmps said:how many watts are you getting?
vmps
No need for a schematic. I just used two power transformers, one for the 200 volt supply and another one for the filament supply. I also added a time delay relay and switched the primary of the 200 volt transformer with the delay relay.vmps said:hi kuroguy,
do you mind to show the power supply you alter from the original schematic ?
vmps
Let me clarify that. I keep the volume at about 20%while listening at work. when doing seriously listening it is up at around 50-60%.salas said:33.44dB gain (47 times the input). That is why with the 20% volume rotation being enough. Not a good thing to have a short throttle. Will give problems with really sensitive speakers. See about the Nelson Pass F4 argument on that.
kuroguy said:
Haven't measured it but it is pleanty loud. I took the amp to the local Sound Advice store to audition some speakers. It filled the 15x15 sound room when connected to a pair of martin logan electrostatics. I have 90db efficiency speakers connected to it and haven't turned it up past about 20% on the volume.
kuroguy said:
Let me clarify that. I keep the volume at about 20%while listening at work. when doing seriously listening it is up at around 50-60%.
Thanks for the clarification, I thought that you didn't use more than 20% in general. 50-60% sounds like more of a comfortable rotational range.
that is what i am getting and my speaker is 92 dB, i hope to have at least 10 to 15 watts on them
vmps
vmps
tube9 said:5W output power, it seems too little.![]()
vmps said:that is what i am getting and my speaker is 92 dB, i hope to have at least 10 to 15 watts on them
vmps
That all depends on the room size, but I can say that there is no lack of volume on this amp.
Schematic missing
Hi there,
I knew something would go wrong with the development of this amp... And yes, it did. I just tried to get a hold of a copy of the schematic but the site http://www.audiohobbyist.com/ seems to be looted or at least not very workable.
Does anybody have the schematic from that site lying around? As a return favour here's the URL to my DIY 832a (gu32) amp design and construction:
http://www.personals-republished.com/phpalbum/main.php?cmd=album&var1=FagAmp/&var2=1
Hi there,
I knew something would go wrong with the development of this amp... And yes, it did. I just tried to get a hold of a copy of the schematic but the site http://www.audiohobbyist.com/ seems to be looted or at least not very workable.
Does anybody have the schematic from that site lying around? As a return favour here's the URL to my DIY 832a (gu32) amp design and construction:
http://www.personals-republished.com/phpalbum/main.php?cmd=album&var1=FagAmp/&var2=1
Thanks Morpheas!
Would be a shame if I had to do all that aluminium work all over (-:
Greetings,
Mayham
Would be a shame if I had to do all that aluminium work all over (-:
Greetings,
Mayham
Latest 832 Schematic
mayham said:Hi there,
Does anybody have the schematic from that site lying around? As a return favour here's the URL to my DIY 832a (gu32) amp design and construction:
The latest schematic posted on DIY 832a before the page went offline is this one. Voltage has been specified on caps.
Francois
Attachments
i build the 832a pp 5 watts with the original design like yours but alter to something like this recently
http://www.diyparadise.com/ultracompact.html
now the amp sound faster and better , yesterday i changed the diodes to schottky diodes, now this amp is overall balance
vmps
http://www.diyparadise.com/ultracompact.html
now the amp sound faster and better , yesterday i changed the diodes to schottky diodes, now this amp is overall balance
vmps
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