therecordingart
Well-known member
I'm looking to build a power amp for a pair of Avantone MixCubes. Are there any schems or builds that you guys are aware of?
Stereo power amp schems?
- Thread starter therecordingart
- Start date
Help Support GroupDIY Audio Forum:
NewYorkDave
Well-known member
There's plenty that Google's aware of :razz:
"Gainclone" seems to be popular. Look it up.
"Gainclone" seems to be popular. Look it up.
Minion
Well-known member
Yes a Gainclose Amp would be a very good place to start....I built a Gainclone Powewr amp as the Power stage in my new DIY Guitar amps and it sounds good and goes very loud.....
Some the the best Gainclone chips are the LM3886/LM4781 and each Cheap can deliver up to 50w into 8 ohms or 65w into 4 ohms.....The chips can also be easilly bridged/Paralelled to achieve Powers of 250w or more Per channel into very low impedances......
The chips are so easy to implement that you can even wire one up P2P...It is actually more difficult to build the Power supply as you need about 10,000uF of Filtering on each Power rail per chip in the amp....
so if you were to build a stereo amo useing 4 Paralleled LM3886 chips per channel for 200w per side which means you are going to need up to 160,000uF of power supply Filtering which can get a bit costly pluss you will need about a 24v,0v,24v 80vA for every LM3886 Chip you use so a 800vA Transformer will be good enough to drive 200w per sode into 8 ohms.....
http://www.national.com/pf/LM/LM3886.html
And Go Here as they have lots of info on chip amsp and also there are PCB and Parts kits available....
http://www.diyaudio.com/forums/
Cheers
Some the the best Gainclone chips are the LM3886/LM4781 and each Cheap can deliver up to 50w into 8 ohms or 65w into 4 ohms.....The chips can also be easilly bridged/Paralelled to achieve Powers of 250w or more Per channel into very low impedances......
The chips are so easy to implement that you can even wire one up P2P...It is actually more difficult to build the Power supply as you need about 10,000uF of Filtering on each Power rail per chip in the amp....
so if you were to build a stereo amo useing 4 Paralleled LM3886 chips per channel for 200w per side which means you are going to need up to 160,000uF of power supply Filtering which can get a bit costly pluss you will need about a 24v,0v,24v 80vA for every LM3886 Chip you use so a 800vA Transformer will be good enough to drive 200w per sode into 8 ohms.....
http://www.national.com/pf/LM/LM3886.html
And Go Here as they have lots of info on chip amsp and also there are PCB and Parts kits available....
http://www.diyaudio.com/forums/
Cheers
Similar threads
