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.

X-5 shorted center channel
X-5 shorted center channel
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 30th October 2008, 10:01 PM   #1
ROLIKOV is offline ROLIKOV  Israel
diyAudio Member
Join Date: May 2007
Default X-5 shorted center channel

I have the X-5 five channels amp. which is awesome ,
But unfortunately , today i made a stupid mistake , i made a short circuit to the center channel , and now the sound is hoarse .
I have the service manual ,
Need some advise of how repair this baby ,
I am going to start check the 4 pairs of Mosfets of the center channel , and i will be happy to receive some tips

  Reply With Quote
Old 31st October 2008, 07:58 AM   #2
h_a is offline h_a  Europe
diyAudio Member
h_a's Avatar
Join Date: Sep 2006
Location: Graz, Austria
I assume you shorted while playing music, right? Without signal not much should happen.

Check as you already said the output fets, by testing bias currents and such.

Be aware that the service manual does not state the correct voltage across the source resistors; in fact biasing is not exactly known for the X5. You could contact Nelson for that.

As the X5 has a common toroid and no regulation for the output stage I guess only the output fets should be affected.

Have fun, Hannes
High Octane phono preamp Wiki
  Reply With Quote
Old 31st October 2008, 06:39 PM   #3
Nelson Pass is offline Nelson Pass  United States
The one and only
Nelson Pass's Avatar
Join Date: Mar 2001
X-5 shorted center channel
Most of the time you need to replace the Mosfets, the Source resistors, and
the zener protection diodes in any pair where one or the two are damaged.

  Reply With Quote


X-5 shorted center channelHide 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
Need center channel help Ryan_Mc Multi-Way 0 12th February 2009 03:36 AM
Center Channel XO help audiokid25 Multi-Way 4 27th December 2004 11:44 PM
center channel sidd_raj2002 Multi-Way 14 4th December 2004 02:41 PM
Center Channel bhg41088 Multi-Way 1 5th September 2004 01:57 AM
Marantz Cd63 - shorted channel? jlnz Everything Else 4 26th November 2003 08:06 PM

New To Site? Need Help?

All times are GMT. The time now is 10:29 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio