F5 power amplifier

[Zen Mod]

Originally posted by stein2



I can, at least read und fersten alles von diese seite:

www.ret.hu

Can you?

naturlich
meinen ersten Schatz Name - Lydia ......... heisse Madjarica

[enzedone]

Sorry if this sound like a silly question.
Would it be possible to set up some kind of automatic fan inside the amp, that comes on at a certain temp?
Or would that be too difficult.

[Zen Mod]

Originally posted by enzedone
Sorry if this sound like a silly question.
Would it be possible to set up some kind of automatic fan inside the amp, that comes on at a certain temp?
Or would that be too difficult.

just temperature switch (at 50-55 degs )............ not too dificult

[enzedone]

I found circuit here:

http://sound.westhost.com/project42.htm

[gaborbela]

Hello
I'm planing to put together a F5 amplifier before the F6 comes out .
I have a question can I use these mosfet-s together because only I found these type IRFP9240 in the local store .
In case it degrade the sound I would rather order from US fairchild mosfet . I not even know which company produced the SEC type mosfet ??? It cost me almost $6CAD each , I bought 5 PC so I can (found hopefully two the same)
Mr. Pass would you be so kind please let me know , I want to know your opinion . But any one else who has experience with these mosfet !! Thanks a lot .
Mr. Pass thanks for your time and the opportunity we can have such a good quality amps .

Greetings

[paulb]

Shouldn't hurt to try them, unless they're fakes.

[jacco vermeulen]

Originally posted by gaborbela
the SEC type

SEC nowadays is short for Shanghai E-Comp., but if you go to secccn.com you'll see that they manufacture only weenie MOSFETs.

The IRFP9240 you have was manufactured by Samsung, must have been lying on the shelf quite a while but not a fake.
(Fairchild and Samsung have been playing corporate takeover ping-pong over the last 30y)

[gaborbela]

Helo
Thank you jacco . That is a good news .

Greetings

[khaho]

Here is my planned layout for my set of components.
Totally newbie one, so it may contain mostly errors

I am going to build one to see if it works

[stein2]

I would like to announce that my F5 clone is well and working. No need to bother ya with all the details because there is nothing I can teach you, but would like to comment on assembly issues... I had my own issues but none with this amp. Took me about ten days to put everything together (including building the box and gathering the parts) and with shear pleasure I can say that the only detail that is not really as Mr. Pass said, is the assembly and adjustment. It was much easier than it appeared after reading the service manual. Now the F5 is connected to my Fostex horns and really no noise or nasty things during power up or warm-up period. The next are the panels, but first I have to make some order in the living room... It's a mess...