F5 Turbo Builders Thread

[6L6]

One 48 volt secondary with center-tap will work.

[henryve]

I assume that the sign-up sheet for the Fairchild MOSFETs are still active. After adding my name, what would I need to do. Pay buzz via Paypal?

[AudioSan]

Originally Posted by 6L6

One 48 volt secondary with center-tap will work.

yes. that will work

[Blink_PT]

Originally Posted by AudioSan

what?
and one 24VAC secondary??? you need 2x24VAC

This source is not symmetrical, have + and - there is no point 0.

Where I turn on 2x24VAC in PSU...

I must be confused or to do evil thing!!!

[AudioSan]

here is the 0 point.

[Blink_PT]

Originally Posted by AudioSan

here is the 0 point.

You are absolutely right, I apologize for my inexcusable stupidity, and I did an F5, brbrbrbrb. Rectification common to 2 channels completely confused me.brbrbrbr

[a.wayne]

Originally Posted by AudioSan

some nice lights allways make the sound good

Have you built a 4 Pr version yet ..... ?

[noSmoking]

hi AudioSan,
I changed R 5,6 to 2.2K at 25 volt rails on F5v2 turbo yields 10 volts at Q5 and 6 emitters,just right for cascode for input fet's. At 32 volt rails about 18 v,still good value!
Thanks,
NS

[Renron]

Originally Posted by Blink_PT

You are absolutely right, I apologize for my inexcusable stupidity, and I did an F5, brbrbrbrb. Rectification common to 2 channels completely confused me.brbrbrbr

one channel, P&N rails

[buzzforb]

Originally Posted by noSmoking

hi AudioSan,
I changed R 5,6 to 2.2K at 25 volt rails on F5v2 turbo yields 10 volts at Q5 and 6 emitters,just right for cascode for input fet's. At 32 volt rails about 18 v,still good value!
Thanks,
NS

May be misreading, but V across R5 and R6 is the gate voltage your fets will see.