my new ampli mosfet

[xcicc]

Where is R1, R2, C1, C2, T1, T2 etc ??????
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I did not understand what schematic you referring, in any case I placed the new scheme updated

LTspice SwitcherCAD form Linear Technology
http://www.linear.com/designtools/software/switchercad.jsp

I am already using this software

The 1 MOhm resistor at input, should be more like 1 kOhm.
The gain of this amplifier is
330 kohm / 220 ohm = 1500
This is too much for any power amplifier

Excuse me, but where you see these two resistance? and how this gain calculations?

For 2x30 Volt supply, a voltage gain of 20-30 would be more like it.
Explaination:
As the output of CD-player can be almost 1 Volt RMS
you only make amplifier work to hard, in making more then x20 or x30 for voltage gain.
( amplifier can max produce like 20 Volt RMS at output )

Regards Lineup [/B]

yes, is exactly what I want to obtain, 20W of excellent sound amplified

 

[lineup]

I did only one mistake:
33 kohm/220 ohm = gain 150

Better use 33kohm/ 1k5 = gain 20
( or maybe 33kohm/1 kohm = gain 33 )

Switchercad by LTspice is good.
Now you run some tests with this software.
You will see that 1Mohm/47kOhm input should better be 1kOhm/47kOhm


regards lineup - please keep on xcicc .. this amplifier may be good .. in the end
I am here to check out your schematics. No worry my friend

 

[xcicc]

regards lineup - please keep on xcicc .. this amplifier may be good .. in the end
I am here to check out your schematics. No worry my friend [/B]

Im flattered, thank you.
A.

 

[lineup]

right now i wish i was in thailand
... as many swedish people have been & will be in future
I am sure we would make very good friends in audio & have some good days together

regards to my fellow in bangkok/thailand/siam
from your man in Sweden: Lineup


lineup personal audio forum is here:
http://lineupaudio.freehostia.com/forum/
you are very welcome to my friendly audio place