Hi to all friends
I want to build two pcb of these to have 2x400W amplifier
http://postimage.org/image/fwsb20b93/
What do you think , how much power can i expect on 4 ohm load and how much on 8 ohm load ?? And how much THD can i expect on 4 ohm and how much on 8 ohm
I expect real answers , cheers
I want to build two pcb of these to have 2x400W amplifier
http://postimage.org/image/fwsb20b93/
What do you think , how much power can i expect on 4 ohm load and how much on 8 ohm load ?? And how much THD can i expect on 4 ohm and how much on 8 ohm
I expect real answers , cheers
Last edited:
As that circuit is class B and looks like from the ampletos website, i'd say 0.5-5% THD.
And only four sets of 2SC5200 and 2SA1943 is not quiite enough for 400 watts into 4 ohms at the rail voltages specified, 6 pairs will be better and 8 pairs will be even better, at 10 pairs you'll have a reliable amp.
And only four sets of 2SC5200 and 2SA1943 is not quiite enough for 400 watts into 4 ohms at the rail voltages specified, 6 pairs will be better and 8 pairs will be even better, at 10 pairs you'll have a reliable amp.
I upload the pictures again I think that this time they are okey
Now , i want to know how much RMS power gives each separately , and which has smallest THD . Im gonna aprecciate your answers
400W Amplfier Circuit - View image: 400 W Amplfier circuit
Antoher 400W Amplfiier Circuit - View image: Another 400 W Amplfier circuit
350W Amplfier Circuit - View image: 350 W Amplifier circuit
600W Amplifier Circuit - View image: 600 W Amplfier circuit
200W Amplifier Circuit - View image: 200 W Amplfiier circuit
Now , i want to know how much RMS power gives each separately , and which has smallest THD . Im gonna aprecciate your answers
400W Amplfier Circuit - View image: 400 W Amplfier circuit
Antoher 400W Amplfiier Circuit - View image: Another 400 W Amplfier circuit
350W Amplfier Circuit - View image: 350 W Amplifier circuit
600W Amplifier Circuit - View image: 600 W Amplfier circuit
200W Amplifier Circuit - View image: 200 W Amplfiier circuit
Attachments
I upload the pictures again I think that this time they are okey
Now , i want to know how much RMS power gives each separately , and which has smallest THD . Im gonna aprecciate your answers
400W Amplfier Circuit - View image: 400 W Amplfier circuit
Antoher 400W Amplfiier Circuit - View image: Another 400 W Amplfier circuit
350W Amplfier Circuit - View image: 350 W Amplifier circuit
600W Amplifier Circuit - View image: 600 W Amplfier circuit
200W Amplifier Circuit - View image: 200 W Amplfiier circuit
And something to say about this schematics ??
Now , i want to know how much RMS power gives each separately , and which has smallest THD . Im gonna aprecciate your answers
THD and power?
Who cares?
THD is a function of feedback, add another opamp around the whole amplifier and it will reduce the THD to vanishing levels.
Will it then sound better?
Of course not.
Power is a function of your supply quality.
Can you hear 3dB?
Just barely.
±3dB would be 250W~1000W. Now you could probably tell the difference between 250W and 1000W, but not always. In a PA situation I have heard an amplifier rated at 200W/8Ω pound harder in the base than another that could produce 750W/8Ω.
Who cares?
THD is a function of feedback, add another opamp around the whole amplifier and it will reduce the THD to vanishing levels.
Will it then sound better?
Of course not.
Power is a function of your supply quality.
Can you hear 3dB?
Just barely.
±3dB would be 250W~1000W. Now you could probably tell the difference between 250W and 1000W, but not always. In a PA situation I have heard an amplifier rated at 200W/8Ω pound harder in the base than another that could produce 750W/8Ω.
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