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 vs. Aleph Mini
Aleph J vs. Aleph Mini
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
Thread Tools Search this Thread
Old 14th April 2008, 02:55 AM   #1
salesmonster is offline salesmonster  United States
diyAudio Member
salesmonster's Avatar
Join Date: Aug 2007
Default Aleph J vs. Aleph Mini

I'm preparing to build my first Pass amp.

Has anyone out there built both the Mini and the J?

The amp will be driving a 2 way 8 ohm speaker with 90 db efficiency. I live in an apartment, so my power needs aren't great.

I'm planning on eventually building both.

The question is which one should come first? I have already built one chipamp and one discreet amp, so I don't feel too overwhelmed.

Opinions anyone?

  Reply With Quote
Old 14th April 2008, 04:28 AM   #2
traw is offline traw  United States
diyAudio Member
Join Date: Sep 2005
i'd go for the J... can run it on the mini power supply, er mini aleph J. just jumper some of the 221's, 1k in place of the 221 to current source, 1k instead of the 392. twist legs on ztx550, twist legs on 2sj74's, the 4.75k to ground versus negative rail fine. throw 1uf poly cap in place of one of the 220's. I think 'freewheeling', leaving out the dc bias adjusting 68k, gave me hair over 1.5amp bias. think i also found 47k in the traditional spot on aleph boards yields around 1 amp bias, something like that cannot remember for sure.
works well.
IMO, the J more open detailed on the upper end.
  Reply With Quote
Old 14th April 2008, 06:00 AM   #3
Babowana is offline Babowana  South Korea
Formerly "jh6you". R.I.P.
Babowana's Avatar
Join Date: Jul 2006
You will build both. Then, just build anyone first.
I don't believe there will be "big" difference
in sound between the two to regret any thing . . .

Good luck . . .
  Reply With Quote


Aleph J vs. Aleph MiniHide 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
Mini Aleph Board & Aleph 2 Parts List gpsmithii Pass Labs 3 16th January 2010 03:58 AM
Aleph Mini / Aleph 3 PCB ready (?) croccodillo Pass Labs 5 27th July 2009 01:51 PM
Difference between Aleph J and Aleph J Mini ppmmcc Pass Labs 5 17th May 2008 06:10 PM
WTB: Aleph-mini PCBs and transistor set for Aleph 30 needtubes Swap Meet 4 6th November 2005 06:29 PM

New To Site? Need Help?

All times are GMT. The time now is 05:44 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio