DIY aleph 4 with reduce o/p - 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 16th January 2007, 12:11 AM   #1
diyAudio Member
 
Join Date: May 2006
Default DIY aleph 4 with reduce o/p

Thank you Mr Nelson for sharing you design.
I had chosen this amp as it meets my power supply requirement. However the output Fet were reduced to 3set/channel.

i tested every output stage, one at a time before paralleling them together. And it works the first time every time.

AS for the sound...... wonderful!!!!!!!!!!
But now my weakest link is my audioNote preAmp kit. Therefore i am now planning to build a P1.7 without the balance input.

here are some pic of work-in-progress.
Attached Images
File Type: jpg image009.jpg (52.8 KB, 327 views)
  Reply With Quote
Old 16th January 2007, 12:13 AM   #2
diyAudio Member
 
Join Date: May 2006
Default WIP

pic 2
Attached Images
File Type: jpg image013.jpg (87.3 KB, 319 views)
  Reply With Quote
Old 16th January 2007, 12:14 AM   #3
diyAudio Member
 
Join Date: May 2006
Default WIP

Finished at last!!!!!
Attached Images
File Type: jpg image010a.jpg (60.5 KB, 286 views)
  Reply With Quote
Old 16th January 2007, 01:58 AM   #4
rchua77 is offline rchua77  Singapore
diyAudio Member
 
rchua77's Avatar
 
Join Date: Jul 2003
Location: Back in Singapore
i think the casing looks absolutely fantastic!

The heatsinks look like they're from KaiChin?
How did you fabricate the casing? Were they custom made or DIYed in the backyard?

What is the voltage drop across the source resistors? What values of resistors did you use?

Regards
  Reply With Quote
Old 16th January 2007, 02:59 AM   #5
moe29 is offline moe29  United States
diyAudio Member
 
moe29's Avatar
 
Join Date: Dec 2002
Location: Florida
Send a message via AIM to moe29 Send a message via Yahoo to moe29
Your amp looks like a monster, like all good Alephs do

It's always interesting to see the end result of hard work.
  Reply With Quote
Old 17th January 2007, 06:12 AM   #6
diyAudio Member
 
Join Date: May 2006
thanks for the comment

i do not have a backyard, but i do have a workshop in my office.
i brought raw alu and did the mechining in the workshop.
All the parts i used were normal/cheap parts, execpt for the E-cap and transformer.

Even the heatsinks were used want. only S$10/pc.
  Reply With Quote
Old 17th January 2007, 06:46 AM   #7
rchua77 is offline rchua77  Singapore
diyAudio Member
 
rchua77's Avatar
 
Join Date: Jul 2003
Location: Back in Singapore
Can you drop me a quick email where you got the heatsinks?

thanks in advance
  Reply With Quote
Old 17th January 2007, 07:51 AM   #8
diyAudio Member
 
Join Date: May 2006
errrrr........
your email are set to 'do not distrub'

anyway, i brought those at SLT third floor. a shop that speclise in "junk". Forget the name/unit no.
  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
FC amp, there is any method to reduce H3? roender Solid State 3 14th June 2007 04:23 PM
How to reduce voltage from PSU?? oblerum Power Supplies 4 10th August 2006 07:04 AM
EMC irradiation, how to reduce ?? WolfgangL Class D 9 24th January 2006 02:37 PM
Reduce 24v DC to 18v DC finestocean Parts 9 29th July 2005 08:46 PM
How to reduce attenuation of a 25k pot? pburke Everything Else 3 28th March 2005 06:32 PM


New To Site? Need Help?

All times are GMT. The time now is 11:02 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