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Nelson Pass 7th February 2012 08:57 PM

F5 Turbo is posted
OK, it's up.


navigate to Watts New or Articles.


ra7 7th February 2012 09:02 PM


vgeorge 7th February 2012 09:08 PM

Ok, I was going to bed, but not now!

Audiofanatic 7th February 2012 09:09 PM

Masha danki Mr. Pass
Many thanks Mr. Pass

This is papiamentu (my native language) from my very soul :worship:

V3 is my amp :D

Best regards,

Audiofanatic :cool:

fdlsys 7th February 2012 09:15 PM


Originally Posted by Nelson Pass (
OK, it's up.
navigate to Watts New or Articles.


"My son and nephew have gone off to pursue their own careers, so it's just me. I'm old and slow, so you'll just have to be patient..."

Agh, noooo!!

Taking apprentices perhaps? I'm also old and slow, but with two of us, we'll be ... twice as slow :p

Thanks Mr. Pass, Papa - off to the article now!

Dennis Hui 7th February 2012 09:43 PM

Thank you so much! (Love the Turbo font. :) )


Geofd 7th February 2012 09:46 PM

Why the change away from the IRF9240/240
Just finished a fast read of the article looks very interesting . The change from the IRF to Fairchild devices is this because they sound better, or is something else changed ?

Also I look forward to adding the P3 to my current F5 to see what difference it makes to the sound.

Thanks Nelson for this I look forward to the building process and listening. I will start with the V2 , but the V3 and beyond looks like it will keep me occupied for many months to come.


CeeVee 7th February 2012 11:04 PM

Just one question Nelson:worship:,

The original F5 i've built has a sound profile (signature ) that gets visitors to my humble abode drooling...

I remember you saying that if you raise the power you also loose the magic...

My question is; does the character of the amplifier change with this much gain in power ?

I know i'm just being impatient...i need to build one.:cool:

Zen Mod 7th February 2012 11:09 PM


Pa explained that in article - up to 3 output pairs , everything is pretty the same

after that ( with more outputs ) just double inputs

doubling inputs will not have any negative effect , especially when using cascodes on them (because of No Herr Mueller)

CeeVee 7th February 2012 11:16 PM

...thanks for prompt reply ever present mighty ZM....i read the article diagonally ...canīt wait to hear this one singing.


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