to all greedy boyz - 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 28th May 2007, 07:42 PM   #1
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
Default to all greedy boyz

new file at passlabs.com/np


hehe
type it

sorry if Papa already announce it

now you all can see how big Teaser he is...........
now -in line,and ........to Meka.............
__________________
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 28th May 2007, 07:52 PM   #2
diyAudio Member
 
Join Date: Jul 2004
Location: Toronto, Canada
It looks expensive to build

How much heatsinking would you need for 5 channels?
  Reply With Quote
Old 28th May 2007, 08:02 PM   #3
Manu is offline Manu  Europe
diyAudio Member
 
Manu's Avatar
 
Join Date: Nov 2002
Location: Vienna, Ostrich
Default Re: to all greedy boyz

Quote:
Originally posted by Zen Mod
new file at passlabs.com/np
HVALA.

Manu
  Reply With Quote
Old 28th May 2007, 08:05 PM   #4
Vix is offline Vix  Yugoslavia
diyAudio Member
 
Vix's Avatar
 
Join Date: Nov 2003
Location: Somewhere on Planet Earth
Nice project for those who wanted Pass gear for their home theater.

( and have big transformers lying around )

Regards,

Vix
  Reply With Quote
Old 28th May 2007, 11:54 PM   #5
diyAudio Member
 
Join Date: Nov 2006
Well, it doesn't do ya much good without UGS 1, 2, and 3 now, does it?

Funny, I've been trying to find one for sale used. --there's no way I'd ever have the time to build one.
  Reply With Quote
Old 29th May 2007, 03:21 AM   #6
diyAudio Member
 
Join Date: Feb 2001
Location: Columbia, SC
I believe there's a thread here about UGSs. The schematics in it may or may not be exactly what Nelson is using, but they will work.

Grey
  Reply With Quote
Old 29th May 2007, 08:57 AM   #7
h_a is offline h_a  Europe
diyAudio Member
 
h_a's Avatar
 
Join Date: Sep 2006
Location: Graz, Austria
If I'm not completely mistaken, these are the UGS-threads:

UGS adventures
Pass X250 concept ?

Cheers, Hannes
  Reply With Quote
Old 29th May 2007, 09:39 AM   #8
h_a is offline h_a  Europe
diyAudio Member
 
h_a's Avatar
 
Join Date: Sep 2006
Location: Graz, Austria
and here for the original ACAUDIO-UGS:

X2_ugs3,4
  Reply With Quote
Old 29th May 2007, 12:48 PM   #9
diyAudio Member
 
CheffDeGaar's Avatar
 
Join Date: Feb 2003
Location: This Universe, I think
Great

Our great Philbyx is experimenting a version Follow links from here : http://www.diyaudio.com/forums/showt...32#post1167632

The schematic is a bit outdated, and a "Vbe multiplier" (a BJT based one, since the used output mosfets begin to conduct before a Mosfet bias control becomes active )

The first channel has been tested de auditu (wow,great, etc...) and the second channel in on the bench for testing. I think there'll be more to come quite soon.
Attached Images
File Type: jpg deuxbisr.jpg (88.8 KB, 777 views)
__________________
/Cheff - Falling feels like flying, until you hit the ground
  Reply With Quote
Old 29th May 2007, 02:49 PM   #10
diyAudio Member
 
CheffDeGaar's Avatar
 
Join Date: Feb 2003
Location: This Universe, I think
Something puzzling me...

A grand total of 40 Mosfets (8/channel). Bias per mosfet : 1A (470mV accross 0R47 source resistors) Supply at 32V.
So each mosfet idles at around 30W, leading to a total dissipation of 1.2kW at idle

Where did I go wrong ?
__________________
/Cheff - Falling feels like flying, until you hit the ground
  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
greedy boyz ............again Zen Mod Pass Labs 30 14th June 2007 03:03 PM


New To Site? Need Help?

All times are GMT. The time now is 04:15 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