I am mounting this amplifier
http://www.diyaudio.com/forums/showthread.php?postid=373769#post373769
and the PCB
http://www.diyaudio.com/forums/showthread.php?postid=365332#post365332
Taht is suposed to get 100W RMS 4 Ohm at +/-30V, is that possible with a so low voltage?
What is the maximum voltage that can I use safly ,to get more output power
Is this a nice amplifier shematic?
Tanks
http://www.diyaudio.com/forums/showthread.php?postid=373769#post373769
and the PCB
http://www.diyaudio.com/forums/showthread.php?postid=365332#post365332
Taht is suposed to get 100W RMS 4 Ohm at +/-30V, is that possible with a so low voltage?
What is the maximum voltage that can I use safly ,to get more output power
Is this a nice amplifier shematic?
Tanks
No, of course it can't deliver anywhwere near 100W at 4 ohms. Matter of fact, it will blow up in your face if you try and build it, the bias diodes are all in backwards.
The maximum output swing is very limited by the rail voltage to the IC, then you have to subtract the losses in the output stage.
The NE5532 will only swing a maximum of ±12V when powered off of ±15V, the EF output stage will only get within ±3V of that, so you will only get ±9V output (peak), about 10W at 4 ohms.
Look at an ESP 3A with ±42V, that will do 100W/4R, the transformer would best be a 30-0-30 200VA with a pair of 8,200µF 50V filter caps
http://sound.westhost.com/project3a.htm
The maximum output swing is very limited by the rail voltage to the IC, then you have to subtract the losses in the output stage.
The NE5532 will only swing a maximum of ±12V when powered off of ±15V, the EF output stage will only get within ±3V of that, so you will only get ±9V output (peak), about 10W at 4 ohms.
Look at an ESP 3A with ±42V, that will do 100W/4R, the transformer would best be a 30-0-30 200VA with a pair of 8,200µF 50V filter caps
http://sound.westhost.com/project3a.htm
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.