The diyAudio Firstwatt F6

[Zen Mod]

My local time ......
Chul

here it goes

 

[2 picoDumbs]

Very nice Zen Mod

 

[2 picoDumbs]

I just bought my F6 boards.
This will be a birthday present to myself.

 

[6L6]

You will LOVE it... It's a fantastic amp!!

 

[2 picoDumbs]

Thanks. So I should order 2 matched pairs of IRFP240 mosfet from h_a.

Could someone tell me why JFETS are being advertised in the diyaudio store as being a perfect match for a stereo F6 build? Can these be used instead of the MOSFETS? Is there a different sonic signature? Are the input and output transistors different? Cannot find information on this.

As explained by Meth Master they are input devices make sure you get them.
You will also need psu pcb and rectifiers for powersupply also available in diyaudio store.
Antek make good transformers but you might find something local

 

[2 picoDumbs]

You will LOVE it... It's a fantastic amp!!

Yes I like the look of the output stage.

 

[Full Range]

I just bought my F6 boards.
This will be a birthday present to myself.

We think alike
I also gave myself a Father's Day present of the F6 kit and the matched JFets combo

Now contemplating the best fit for purpose combination / brands of resistors to use

FR

 

[Chul]

You will LOVE it... It's a fantastic amp!!

I appreciate this very much! I am dumb enough to ask the exact part number of that N and P...
But I will try to find that..

Eventually I will post the pictures when finished building...which may be fugly enough..
Thank you again. Chul

 

[Zen Mod]

BC546/556 ,BC547/557 , BC550/560 , ZTX450/550

also - increase mosfet gate resistors to , say, 220R

 

[Chul]

BC546/556 ,BC547/557 , BC550/560 , ZTX450/550

also - increase mosfet gate resistors to , say, 220R

Thank you! I will post as I progress..
Chul

 

[tordnilsson]

Is it possible to build F6 as hardwired design (point to point soldered) ?

 

[rayma]

Is it possible to build F6 as hardwired design (point to point soldered) ?

Sure, if you observe good practices.

 

[tordnilsson]

And that means ?

 

[2 picoDumbs]

And that means ?

Yes you can. I built an F5 point to point. It performed very well

 

[Zen Mod]

And that means ?

probably = make it good

 

[2 picoDumbs]

Just get the pcb. It's bloody tedious doing point to point

 

[Zen Mod]

where is challenge in that ?

 

[Danger Mouse]

Is it possible to build F6 as hardwired design (point to point soldered) ?

yes Did something like this with my first F5 and aleph j

look...

It is really time consuming. (But make a layout, etching, Drilling too)
But i think this boards are solid as a rock and they will not break.
Resistance in the wire is also no Problem. Power wires are 1mm and the others 0.7mm solid core Copper.

But there is also an other opportunity make your pcb.
With turret boards like old Tube / Fender amps.
This i will try next time i build a amp with so few parts.

 

[rayma]

And that means ?

If you have to ask, then use the pcb instead.

 

[vitalstates]

Is it possible to build F6 as hardwired design (point to point soldered) ?

yes, very rewarding:

Vitalstates- Amplifiers