New mini Aleph works! But Q's ???? - diyAudio
Go Back   Home > Forums > Amplifiers > Pass Labs
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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
Thread Tools Search this Thread
Old 8th December 2005, 02:36 AM   #1
diyAudio Member
Join Date: Feb 2004
Location: Racine, Wisconsin
Default New mini Aleph works! But Q's ????

Just fired up my BrianGT mini and guess what?

No smoke. Just heat & music!

Just one question, do I short something in the balanced input (- & GND?) for unbalanced input?

When testing DC offset, should the input + & GND be shorted for the measurement?

Thank you in advance my audio brothas.
  Reply With Quote
Old 8th December 2005, 04:18 AM   #2
diyAudio Member
Join Date: Feb 2001
Location: Columbia, SC
Short the - input to ground when using an unbalanced input for a balanced amp. Or not. It won't hurt anything. Shorting will give more gain.
When bench testing the DC at the output, short the + input to ground. That's closer to the source Z that the amp would see if it were hooked to a preamp (presumed to have a Zout of 1k or less, usually much less). Operating the input open represents an infinite impedance in parallel with the input resistor network and you'll get more noise and DC at the output.

  Reply With Quote
Old 8th December 2005, 04:23 AM   #3
jleaman is offline jleaman  Belgium
Join Date: Apr 2002
Send a message via AIM to jleaman
Congrats mine have been running over one month now non stop i leave them on all day and all night .. NOW to get in gear an build these chassis .

  Reply With Quote
Old 8th December 2005, 03:35 PM   #4
diyAudio Member
Join Date: Feb 2004
Location: Racine, Wisconsin
i shorted the - & GND...

A lot more gain...


  Reply With Quote


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
mini-aleph versus aleph-3 rmgvs Pass Labs 7 4th February 2010 03:18 PM
Mini Aleph Board & Aleph 2 Parts List gpsmithii Pass Labs 3 16th January 2010 03:58 AM
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
My Aleph-X works! stefan Pass Labs 7 20th December 2003 07:47 PM

New To Site? Need Help?

All times are GMT. The time now is 05:12 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2