Power acoustik schematic - Page 2 - diyAudio
Go Back   Home > Forums > General Interest > Car Audio
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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 21st January 2010, 08:02 AM   #11
diyAudio Member
Join Date: Nov 2003
Location: Louisiana
The source resistors appear to be intact but if one is well out of tolerance, that could cause the amp to clip early.

Is the defective channel the only one that causes an increase in idle current when the bias pot is turned clockwise or counter-clockwise?

Adjusting the bias by monitoring the idle current worked on the 2200/2 I repaired.

The bias is important on this amp because (if I'm not mistaken), the bias pot controls the current through the differential amplifier and if there is insufficient current through the differential amp, the following stages can't be driven properly.

In addition to checking all of the driver transistors, check the SMD resistors for that channel on the driver board.
  Reply With Quote
Old 21st January 2010, 11:15 AM   #12
diyAudio Member
Join Date: Sep 2009
Location: Wisconsin
By adjusting the bias pot I was able to get the channel to match the others. I will play music through it all day to see if my adjustments have any bad effects.
  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
Power Acoustik Amp Help 22chet Car Audio 7 22nd February 2009 10:05 AM
Power Acoustik Amp chadrock Car Audio 28 19th March 2008 05:37 AM
Power Acoustik A2400db spooney Car Audio 21 19th March 2008 12:05 AM
Help me to fix POWER ACOUSTIK please! Mordor Car Audio 10 13th February 2006 07:58 AM
1400 watt power acoustik 88civic Solid State 5 27th July 2002 09:08 PM

New To Site? Need Help?

All times are GMT. The time now is 09:34 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