[sdiy] The final cut power amp!

[James Patchell]

Get yourself a copy of "Audio Power Amplifier Design Handbook" by Douglas 
Self (a britt).  There is a lot of good info in that book on amplifier 
design.  As far as MosFets go....well, I would probably not say don't do 
it, however you might want to think twice.  I have built quite a few Mosfet 
amplifiers, including one that would put out about 600 watts (this was to 
drive a three phase air bearing spindle motor, not a speaker), and to tell 
you the truth, the number of little problems you have to solve to use a 
Mosfet, does not seem to justify the results, although, the best sounding 
power amp I ever built used Mosfets.  The amplifier I am doing right now 
though is all BJTs....

http://www.oldcrows.net/~patchell/AudioDIY/AudioDIY.html


Maybe I should see what I can do about locating the circuit for the Mosfet 
amplifier...assuming I ever drew one...

At 04:41 AM 1/16/2005 +0100, karl dalen wrote:
>Hi!
>
>In these days of  HD recording in wich im about to enter
>i'm looking for a (master mix) monitor amp, not to buy
>but to design/build my self, im interested in your ideas
>and suggestions into this venture of mine!
>
>Im not looking for large output powers, but more of "high quality"
>at decent levels, (10-50W) since the speakers is merly a metere
>away, also it must be very simple because i might do the full
>5:1 surround sound so all power amps has to fit into one tiny
>box on the desk.
>
>So to start somewhere i asume at least MOSFET, class A, A-B?
>Is there any single chip Mosfet amps worth concider?
>Is there any decent public domain designs on the net
>as design apethezzer?
>
>Your ideas and toughts most wellcomed!
>
>Reg
>KD
>
>PS:The last place in the universe i want to visit in this venture
>of mine is the corner where the HIFI freaks are located, that would
>only end into a big confused "nothing-and-hundreds-of-sugestions"!

         -Jim
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http://www.oldcrows.net/~patchell

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