Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Pass Labs This forum is dedicated to Pass Labs discussion.

Aleph J  versus  Aleph 3
Aleph J  versus  Aleph 3
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 19th January 2014, 02:35 PM   #1
sppass is offline sppass  Greece
diyAudio Member
 
Join Date: Nov 2008
Location: Athens
Default Aleph J versus Aleph 3

Hi all.

I want to built an Aleph with approx 30w. I have in my possession some IRFP244 and IRF9610. and I wonder if it is worth the trouble to built an Aleph J (due to termination of production of 2sj109 - 2sj74 bl) versus Aleph 3.
Is there difference in the acoustic performance of these two amplifiers to justify the acquisition process?
What acoustic difference if I use the IRFP244 in the construction of aleph j instead of IRFP240?

Thanks for your help,

Nick
  Reply With Quote
Old 19th January 2014, 02:49 PM   #2
KatieandDad is offline KatieandDad  United Kingdom
diyAudio Member
 
KatieandDad's Avatar
 
Join Date: Nov 2011
Location: UK
I've got the Aleph4 with IRFP244's and it sounds "Divine".
  Reply With Quote
Old 19th January 2014, 03:09 PM   #3
sppass is offline sppass  Greece
diyAudio Member
 
Join Date: Nov 2008
Location: Athens
Quote:
Originally Posted by KatieandDad View Post
I've got the Aleph4 with IRFP244's and it sounds "Divine".
Thanks for the reply,

But I do not know if irfp244 is suitable for the construction of a aleph 3 or j.

Nick
  Reply With Quote
Old 19th January 2014, 03:10 PM   #4
AudioSan is offline AudioSan  Norway
diyAudio Member
 
Join Date: Feb 2009
LSJ74 is easy to get. hava a look at the store on this site
  Reply With Quote
Old 19th January 2014, 03:28 PM   #5
jacco vermeulen is offline jacco vermeulen  Netherlands
diyAudio Member
 
jacco vermeulen's Avatar
 
Join Date: Oct 2004
Quote:
Originally Posted by sppass View Post
Is there difference in the acoustic performance of these two amplifiers to justify the acquisition process?
You're skipping that there's another difference between the two, besides the choice of input devices.
  Reply With Quote
Old 19th January 2014, 03:37 PM   #6
sppass is offline sppass  Greece
diyAudio Member
 
Join Date: Nov 2008
Location: Athens
Quote:
Originally Posted by AudioSan View Post
LSJ74 is easy to get. hava a look at the store on this site
But is there audible difference between the two? (Aleph 3 - j)
Considering that I have in my possession already irf9610, worth the difference in performance, if any.
  Reply With Quote
Old 19th January 2014, 03:53 PM   #7
KatieandDad is offline KatieandDad  United Kingdom
diyAudio Member
 
KatieandDad's Avatar
 
Join Date: Nov 2011
Location: UK
As far as I can ascertain, all the Alephs have that lovely "tubey" type of character which is also (apparently) there in the BA series. The Aleph J is more difficult to build due to its X topography, matching of the components is far more critical.

Aren't the X's just Alephs in X configuration?

Last edited by KatieandDad; 19th January 2014 at 03:56 PM.
  Reply With Quote
Old 19th January 2014, 03:57 PM   #8
sppass is offline sppass  Greece
diyAudio Member
 
Join Date: Nov 2008
Location: Athens
Quote:
Originally Posted by jacco vermeulen View Post
You're skipping that there's another difference between the two, besides the choice of input devices.
What are these differences and these can be applied to the Aleph 3?
  Reply With Quote
Old 19th January 2014, 03:58 PM   #9
Nelson Pass is offline Nelson Pass  United States
The one and only
 
Nelson Pass's Avatar
 
Join Date: Mar 2001
Aleph J  versus  Aleph 3
Quote:
Originally Posted by sppass View Post
But I do not know if irfp244 is suitable for the construction of a aleph 3 or j.
The original Alephs used IRF244 TO-3 devices, as the IRF240's had the extra
fat pins.

  Reply With Quote
Old 19th January 2014, 04:00 PM   #10
Zen Mod is offline Zen Mod  Serbia
Official Court Jester
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
Aleph J  versus  Aleph 3
J is not X
__________________
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

Reply


Aleph J  versus  Aleph 3Hide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
First version Aleph 0 (Null, ZERO, O, Os, 0s) versus later Aleph versions tiefbassuebertr Pass Labs 29 11th August 2019 07:38 PM
mini-aleph versus aleph-3 rmgvs Pass Labs 7 4th February 2010 03:18 PM
First version Aleph 0 (Null, ZERO, O, Os, 0s) versus later Aleph versions tiefbassuebertr Pass Labs 0 6th August 2009 11:11 AM
Aleph 5 versus Aleph 30 / Panos29 Alois Pass Labs 6 25th September 2003 02:40 PM


New To Site? Need Help?

All times are GMT. The time now is 05:03 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki