100W Ultimate Fidelity Amplifier

why do we need 900watt of mosfet output stage for 225watt into 8 ohms

i didn't understand your answer

why do you think so
you quoted exactly from my post.
You understood how to interpret the message contained in what I said.

You queried "why" which is asking for confirmation behind the science of where my recommendation came from. This confirms you understood the statement.

I think the reason you queried the need for 900W of output stage mosFETs was because you don't like the idea of using that robust an output stage due to the amount of resources it will commit you to using.

That's why I said
I think you understand my statement.
I also think you don't like my statement.
 

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you quoted exactly from my post.
You understood how to interpret the message contained in what I said.

You queried "why" which is asking for confirmation behind the science of where my recommendation came from. This confirms you understood the statement.

I think the reason you queried the need for 900W of output stage mosFETs was because you don't like the idea of using that robust an output stage due to the amount of resources it will commit you to using.

That's why I said

i asked apexaudio

why do you interfere in my question in apexaudio thread
 
Hello
I will try to build a 6 cannel amp for my HTPC
I will use five APEX AX14 and one D14 for subwoofer.
But what about power supply, Soft start and toroidal?
Regards

Use this simple soft-start circuit, and DC protect with triac or use PSU with protect...
 

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Hello apexaudio
This Regulated psu
How many watts can it tolerate?
These capacitor 10000uf 100v can I use some others.
And MAC224 to the speaker terminal, I can not find in Denmark
Have you a layout for the speaker terminal.
Regards

With 3 pairs of output Regulated PSU will run all 6 channels, capacitors can be 63V for this amp, triac can be replaced with BT139 or similar and pcb for speaker terminal is in post #355. You can add this circuit 'Turn on/off mute with FET'.
Regards
 

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Last edited:
I have noticed one thing, that if you use a local EC loop for the driver and output stage circuit and a low power small signal regulator circuit for the IPS and VAS, the power supply noise becomes part of the 'error' and is largely accounted for in the correction signal. But local loops complicate just a little more.:spin: