Pass Labs Xs - Page 32 - diyAudio
Go Back   Home > Forums > Amplifiers > Pass Labs

Pass Labs This forum is dedicated to Pass Labs discussion.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 3rd March 2013, 03:48 PM   #311
diyAudio Member
 
jacco vermeulen's Avatar
 
Join Date: Oct 2004
Location: At the sea front, Rotterdam or Curaçao
Send a message via Yahoo to jacco vermeulen
"Huge constant current sources" , might have been faster if you told me to RTF-OM :
https://passlabs.com/images/uploads/.../Xs_amp_om.pdf

(last time me visited, it wasn't there yet)
Answer to the umbilical saga.
__________________
The buck stops Here

Last edited by jacco vermeulen; 3rd March 2013 at 03:52 PM.
  Reply With Quote
Old 3rd March 2013, 04:11 PM   #312
diyAudio Member
 
buzzforb's Avatar
 
Join Date: Oct 2010
Location: Burlington, NC
RTF-OM. Just trying to help
__________________
...Shape the sound , Man!
  Reply With Quote
Old 3rd March 2013, 04:14 PM   #313
diyAudio Member
 
buzzforb's Avatar
 
Join Date: Oct 2010
Location: Burlington, NC
OT, Anybody know what the B4 change may entail. Gotta build one for my ALtec system and just wandering what might be changed. Variable Q? Different buffer? Gain?
__________________
...Shape the sound , Man!
  Reply With Quote
Old 3rd March 2013, 05:29 PM   #314
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
change ?

speaking of ....ah , and when ?
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa...© by Mighty ZM
  Reply With Quote
Old 3rd March 2013, 05:41 PM   #315
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
Quote:
Originally Posted by jacco vermeulen View Post
"Huge constant current sources" , might have been faster if you told me to RTF-OM :
https://passlabs.com/images/uploads/.../Xs_amp_om.pdf

(last time me visited, it wasn't there yet)
Answer to the umbilical saga.
that's just another funny proof that you're more trusting to what you see on pics and read between fuzzy lines , than what Mighty Moi is telling ya

what's RTF-OM ? ya know I'm lousy with those Dutchie acronyms

Quote:
The four
massive banks of output devices used in the X and XA series became
six massive banks, with the bias current provided by the constant
current sources increased by a factor of ten. This expanded the
single-ended power range by a factor of 100. Of course this created
a need for more and better power supply, so we created a supply
with larger power transformer, paralleled fast/soft recover rectifiers,
and double the storage capacitance. The separate power supply also
holds the huge constant current sources used to bias the output
stage of the amplifier. It dissipates approximately half the energy
and contributes further to the performance by isolating the radiated
power supply noise from the main amplifier. The extra heat sinking
is very convenient, as the amplifier dissipates about three times its
output power rating.
didn't I told ya already the same , and that's nothing else than pure logic , or we aren't eating same breadcrumbs ?

whatever , I think it's time for you to buy a pair ( even smaller ones ) , you can use them as welders one day , when you are going to have your assituated on da hull , strictly

__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa...© by Mighty ZM

Last edited by Zen Mod; 3rd March 2013 at 05:43 PM.
  Reply With Quote
Old 3rd March 2013, 05:44 PM   #316
diyAudio Member
 
buzzforb's Avatar
 
Join Date: Oct 2010
Location: Burlington, NC
Quote:
Originally Posted by Zen Mod View Post
change ?

speaking of ....ah , and when ?
Your making my head hurt again. I saw it on Lowther site. Now i dont know squat, but Nelson usually has a reason for changes. Its in one of his patents. Gonna send some MJK files your way for final laugh.

More info:Making Flared Ports

Busy busy!
Attached Images
File Type: jpg 2012-03-03 14.58.44-2.jpg (873.0 KB, 144 views)
__________________
...Shape the sound , Man!

Last edited by buzzforb; 3rd March 2013 at 05:50 PM.
  Reply With Quote
Old 3rd March 2013, 05:46 PM   #317
diyAudio Member
 
jacco vermeulen's Avatar
 
Join Date: Oct 2004
Location: At the sea front, Rotterdam or Curaçao
Send a message via Yahoo to jacco vermeulen
Situated on hill, only 9% sales tax, no import tax.
$71K instead of $91K for 150's

Still means that the OS is actually in the penthouse suite, the 40 in the bottom are a bunch of coal-minor slaves.

Read The . Owner's Manual
__________________
The buck stops Here

Last edited by jacco vermeulen; 3rd March 2013 at 05:51 PM.
  Reply With Quote
Old 3rd March 2013, 05:49 PM   #318
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
no - my head is spinned this time

I didn't get about what you are speaking it's changed ?

B4 ?

and where is that info , about alleged change

maybe I can help ...... or maybe just Pa can help , but we can't know that without knowing about what's the fuss

I mean , Buzz ( not fuss )

edit :

ook ya , Cher ;

4 banks are in attic

2 lazy banks are in cellar

"empty" ground-floor ( acting Invisible Man role ) is where Babelfish will be situated ( serving as turbocharger for that umbilical ; don't think about fake Naim and Cyrus addies )

conclusion - XS are , from start , intended to be 3+3 case jobbie

__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa...© by Mighty ZM

Last edited by Zen Mod; 3rd March 2013 at 05:55 PM.
  Reply With Quote
Old 3rd March 2013, 05:50 PM   #319
diyAudio Member
 
buzzforb's Avatar
 
Join Date: Oct 2010
Location: Burlington, NC
F5(key)
__________________
...Shape the sound , Man!
  Reply With Quote
Old 3rd March 2013, 05:52 PM   #320
nr12 is offline nr12  Germany
diyAudio Member
 
Join Date: Mar 2011
Location: Schwaben
Quote:
Originally Posted by Zen Mod View Post

what's RTF-OM ? ya know I'm lousy with those Dutchie acronyms
Hello ZM,

I think it's a variation of an english acronym:
RTFM - Wikipedia, the free encyclopedia

Ulf
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Pass Labs amp combination for Thiel speakers, need Mr Pass' advice ! And everyone... JulienG Pass Labs 80 14th February 2013 05:22 PM
HELP to Pass Labs D-1 maikl 5 Pass Labs 3 16th May 2011 03:53 PM
I need Crown XS-500 service manual or schematic (XS-500, -700, -900, -1200) timbert Solid State 0 30th March 2009 06:52 PM
EXECUTIVE AUDIO XS 402 and XS 602 POWER AMP SCHEMATICS alexclaire Solid State 1 24th March 2009 07:41 AM
My opinion on Pass Labs and Mr. Pass (Nelson) himself b_online Pass Labs 11 21st May 2003 12:39 AM


New To Site? Need Help?

All times are GMT. The time now is 08:02 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