Which components to use for pass aleph - Page 3 - 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 6th December 2009, 08:51 PM   #21
diyAudio Member
 
Join Date: Oct 2008
Hello mariussuiram,

I See your from holland. Are you buying matched mosfets from audiofabr. or do you know another supplier? Im also in the proces of finding out where to buy parts for building one of the pass amps. Probably an aleph-jx.
  Reply With Quote
Old 27th December 2009, 06:29 PM   #22
diyAudio Member
 
Join Date: Nov 2009
Hello,

Ik ga de mosfets of bij audiofabriek kopen of bij de gene die de pcb leverd. Hij wil ze eventueel ook gematched verkopen. Sorrie dat ik zo laat reageer trouwens. Ben even weg geweest. Wat de prijs betreft. Dat maakt weinig uit. Zijn in beide gevallen even duur. Het enige wat ik nog wil weten is of ze alle 24 gematched moeten zijn. Of bv 2 x een groep van 12. Ook de andere te gebruiken mosfets moeten gematched zijn. Maar weet nog niet volgens welke toleranties en hoe.

Als jij nog ideen of een leuk adresje weet, hoor ik het graag. Op internet zijn ze ook via mouser te koop. Maar dan helaas niet gematched. Als hun me kunnen garanderen dat ze uit dezelfde batch komen is het prijs technisch wel intressant.

gr
  Reply With Quote
Old 27th December 2009, 08:03 PM   #23
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
Groups of 6.
Main theme is that each in a bank of six has identical dissipation, so that one does not run much hotter than it's neighbor. (a matched batch of 12 will be mucho expensive)

IRFP = Plastic, IRF244 = TO3, the plastic package is easier to work with. IRFP240 or IRFP244 makes no difference, the Vishay/Harris part has a theoretical input capacitance advantage.
__________________
The buck stops Here

Last edited by jacco vermeulen; 27th December 2009 at 08:10 PM.
  Reply With Quote
Old 27th December 2009, 08:27 PM   #24
a.wayne is offline a.wayne  United States
Sin Bin
 
Join Date: May 2008
Location: Front Row Center
Quote:
Originally Posted by VladimirK View Post
I would not agree with what you are saying about electrolytes. If one does not put enough attention to them (for instance to input cap, NFB cap, modulated current source cap, and power supply caps), typical consequence is that LM3886 gives more clear sound than Aleph (as I remember this was found also by Peter Daniel). Even if NFB electrolyte or Aleph current source cap is of top quality, decent polyprop shunting cap is appreciated. Few years ago I was discouraged with my Zen4, assembled with no name electrolytes, since it sounded less transparent than LM3886 chip amp. This fact would immediately give rise to a question why do you need those big and expensive aluminium radiators.

Hello ,
I would love to hear more on why you had better results with LM3886?
  Reply With Quote
Old 27th December 2009, 08:37 PM   #25
jleaman is offline jleaman  Belgium
Banned
 
Join Date: Apr 2002
Send a message via AIM to jleaman
Quote:
Originally Posted by a.wayne View Post
Hello ,
I would love to hear more on why you had better results with LM3886?
Me 2,
  Reply With Quote
Old 29th December 2009, 02:19 PM   #26
diyAudio Member
 
Join Date: Feb 2007
Location: Tashkent
Quote:
Originally Posted by a.wayne View Post
Hello ,
I would love to hear more on why you had better results with LM3886?
No, I do not state that LM3886 is more transparent or better, finally I have got better sound from both Zen4 and especially from Zen9 than 3886, but only after I have put best available electrolytes and film shunts to Zen schematics. Upgraded in power and tweaked in capacitors Zen9 is really a dream of an audiophile. So, good Zen is an expensive amp, while 3886 possibly provide best quality/price ratio.
  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
FS Pass Amps Components in EU: MosFet + ZTX + 0.47ohm/3W + 22mF/35V snap-in caps massimo Swap Meet 3 14th January 2008 08:42 PM
Pass Tharagard A75 vs Pass Aleph 1.2's daly41k Pass Labs 7 18th February 2007 03:10 PM
pass aleph P VS pass X2 first version perusicchio Pass Labs 10 5th March 2004 10:06 AM
Aleph series and components jejeaudio Pass Labs 1 26th February 2003 11:55 PM
Aleph 2 components.. skaara Pass Labs 1 13th October 2002 11:31 AM


New To Site? Need Help?

All times are GMT. The time now is 03:48 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