Pass Labs Xs

[buzzforb]

Been out of town and away from wife for over a week. I have to stay away from that particular version

 

[jacco vermeulen]

called you a snob

And folks ask why I frequently wake up with my fingers around his neck.

Bare in mind that Paps still is an Ace in cost cornering, still goes for 85k works.
(a Homey Economicus of audio)

 

[buzzforb]

I guess he has been at it long enough that we can say he is delivering the goods.

 

[c2cthomas]

And folks ask why I frequently wake up with my fingers around his neck.

Bare in mind that Paps still is an Ace in cost cornering, still goes for 85k works.
(a Homey Economicus of audio)

And at the same time will hold workshops that will show you how to trim about $84,750 bucks off of that tab..... (depending on if ya wanna include a gold plated bus thingy or not)....

 

[jacco vermeulen]

bus thingy or not

Welded/soldered lug bus bar, yes.
Goldplated, no.

 

[Antoinel]

And at the same time will hold workshops that will show you how to trim about $84,750 bucks off of that tab..... (depending on if ya wanna include a gold plated bus thingy or not)....

This E-rapport is beneficial at many levels. It is entertaining, brings together people from all over the planet, and spurs ideas which maybe silly-crazy; like this one. Mr. Pass gives Dr. Mazzola 60 enlosure sides of to-be Xs or Y or Z amps. Build me a monolithic array of [60] SiC JFETs or SITs in each plate. Piece of cake; maybe!. Dr. Mazzola then integrates 30 SIC BJTs per side for KRELL amps. He then makes available sides [and heat sinks] for enclosures for switching apps and audio diy etc. Another beautiful color for the Xs amps is the black finish of SiC; baked or epitaxi.

 

[Antoinel]

I hope that you [like I] wish to keep this thread alive, entertaining and stimulating. Although the Xs amps are commercial, let's talk nonetheless about their guts. It'll give us a feel for this state of the art/science. I'll analyze/scour their published literature, look at pictures of their insides to develop good estimate circuits. Fortunately, its all there. Let's begin.


Question?

• Are the power amplifying transistors NJFET or MOSFET?. At issue is the relative sum of their input capacitance; expected to be higher for MOSFET. I vote for SemiSouth NJFET.

 

[buzzforb]

Mosfet or Jfet. Driving them is non issue with beefy Vas

 

[jacco vermeulen]

MOSFET.

From the higher resolution images on the other Xs thread, one can also tell which brand/type was used in either amp case.
(don't let any power JFET semiMouth jokes there distract you, just fun to fool around with all things relative)

 

[buzzforb]

You have better software than I if you can see brand of mosfet

 

[jacco vermeulen]

More updates, gloat enough x-rated and you get the size right after three stills.

 

[Tazzz]

From the higher resolution images on the other Xs thread, one can also tell which brand/type was used in either amp case.
(don't let any power JFET semiMouth jokes there distract you, just fun to fool around with all things relative)

Which thread might that be?

 

[Zen Mod]

just a though ....... if we arange massive GB of Gun Nails ....... and we buy , say , around 5T of proper size , maybe we can persuade Pa to construct special DiyA XS amp , just for Greeedy Boyz

be sure that he's capable to make it even with those for outputs

especially if we give him 5T of outputs just for that slight favor

( dunno which size we can use for input stage ?)

 

[c2cthomas]

just a though ....... if we arange massive GB of Gun Nails ....... and we buy , say , around 5T of proper size , maybe we can persuade Pa to construct special DiyA XS amp , just for Greeedy Boyz

I'm thinking that Papa might be tempted to fire off a few of those at your azz just to keep you outta hiz shop tho..... I wonder where that stinky skunk iz at now dayz anyway..... hmmmmmm....

 

[buzzforb]

I think we take care of the skunk problem, then we get amp. Nails can be used if necessary.

 

[Zen Mod]

naaah .......

skunk and moi - we are productive these dayz (whoabluecar - we found few holes in Papalab floor ...... can ya imagine what sorts of tiny parts fell through ? )

 

[buzzforb]

Pepe?

 

[jacco vermeulen]

persuade Pa

Speaking of Greedy Snobs again, and rack gloating, the Xsnicker bars aren't exactly what I'd refer to as "plates".

Need the size, or the prize ? (mine and/or yours)

 

[Zen Mod]

you are thinking of front plate horns or cap hat ?

 

[Antoinel]

The resolution of the inside pics of Xs amps needs improvement. buzzforb may disagree; noting that somebody/somewhere will thus unravel the secrets of what makes a Pass amp sound so awesome. Who else on our planet is in a position [of expertise and know-how etc.] or gives a damn like Mr. Pass to create this awesomeness? Besides; a clear picture is a beast of a thousand words. Why then hide all the art and beauty? Are there fake copies of Pass commercial amps? Never heard of them. Fuzzy pictures are still welcome, and will make my quest to understand Xs a welcome challenge.