diyAudio

diyAudio (http://www.diyaudio.com/forums/)
-   Pass Labs (http://www.diyaudio.com/forums/pass-labs/)
-   -   Pass "DeLite" Amp from BAF (http://www.diyaudio.com/forums/pass-labs/153832-pass-delite-amp-baf.html)

Vix 20th October 2009 07:31 AM

Pass "DeLite" Amp from BAF
 
1 Attachment(s)
EDITORS NOTE: This is the single depletion mode Mosfet amp that Nelson Pass demonstrated at Burning Amp this year. END



Quote:

Originally Posted by Nelson Pass (Post 1954577)
I just opened an unexpected arrival from Jon this morning....

After seeing this, who can resist?

(Tea-bag, thanks for the photo)

Quote:

Originally Posted by Nelson Pass (Post 1954577)
It's worth noting that I am considering some other tweaks
on this as well.:cool:

J-fet CCS? :cool::)

Tea-Bag 20th October 2009 01:55 PM

1 Attachment(s)
Quote:

Originally Posted by Jon Ver Halen (Post 1954818)
. After hearing his simple power J-fet SE amp at Burning Amp, I feel even stronger that this deserves to be explored.

Hopefully, my F2 will receive a transplant, and I will report back later.

John, you mean this beast?
This was a depletion mode mostfet amp, not JFET, which I thought sounded lively and promising. I wonder if an F2 like charging cap would help here with turn on thump. He also ran the J2 into the feastrex as well.
I hope Nelsons doesn't black list me for posting the chalk board lesson schematic. I assume the article will be worth waiting for, since he had only spent a few hours with it. May not be a final version.

Nelson Pass 20th October 2009 03:27 PM

Quote:

Originally Posted by Tea-Bag (Post 1955204)
John, you mean this beast?
This was a depletion mode mostfet amp, not JFET, which I thought sounded lively and promising. I wonder if an F2 like charging cap would help here with turn on thump. He also ran the J2 into the feastrex as well.
I hope Nelsons doesn't black list me for posting the chalk board lesson schematic. I assume the article will be worth waiting for, since he had only spent a few hours with it. May not be a final version.

Correct on all counts. I think we're going to have some
DIY fun with this one, as it sounds far better than it has
any right to.

I chose the Ixys depletion mode Mosfet because you guys
can buy it from Digikey for $6 (plus I wanted to play with
it). I also have several types of depletion mode JFETs, but
none of them are available and/or practical.

This will change, even if I have to get them made and
sell them myself.

:cool:

Zen Mod 20th October 2009 03:30 PM

Quote:

Originally Posted by Nelson Pass (Post 1955315)
......

This will change, even if I have to get them made and
sell them myself.

:cool:

:worship:

seriously

:devily:

massimo 20th October 2009 03:34 PM

Good Nelson, a real new Zen amp (1 single device) 15 years after!
But here in Europe we might have some problems nowadays as big bulbs (100 W) are no longer available in the shops by law. We must use electronic "green" bulbs only and "save the planet"!

Vix 20th October 2009 03:37 PM

Quote:

Originally Posted by Zen Mod (Post 1955326)
:worship:

seriously

:devily:

This beautiful amp only needs a fugly wooden box. :):p

Now, just a bit more: How 'bout a YBSOZ (Young Brother of Son of ZEN) with Ixys depletion mode Mosfets?

That would be an amp!! :D

Btw, as always, thanks Papa! :cool:

Vix 20th October 2009 03:40 PM

Quote:

Originally Posted by massimo (Post 1955329)
Good Nelson, a real new Zen amp (1 single device) 15 years after!
But here in Europe we might have some problems nowadays as big bulbs (100 W) are no longer available in the shops by law. We must use electronic "green" bulbs only and "save the planet"!

Massimo, I had built an F2 with lightbulbs. I used some halogen 1500w sticks. Maybe you can still find them around....

labjr 20th October 2009 03:43 PM

What are the lamps for? Gnd ?

Zen Mod 20th October 2009 03:46 PM

Quote:

Originally Posted by labjr (Post 1955342)
What are the lamps for? Gnd ?

load;

look at picture from BAF - Papa in front of school board ;

who was a teacher ?

:rofl:

massimo 20th October 2009 03:53 PM

Quote:

Originally Posted by Vix (Post 1955338)
Massimo, I had built an F2 with lightbulbs. I used some halogen 1500w sticks. Maybe you can still find them around....

Those should be still available.


All times are GMT. The time now is 06:31 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio


Content Relevant URLs by vBSEO 3.3.2