Memphis 16-PR1KD Over-Current triggering - 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 16th May 2012, 05:38 PM   #1
diyAudio Member
Join Date: Mar 2007
Location: Columbus, Ohio ^
Default Memphis 16-PR1KD Over-Current triggering


Working on a Memphis 16-PR1KD. A few months ago I replaced all the audio output drivers & associated parts that were overheating, but after testing, on certain peaks the Over-Current protection triggers. Definitely should not be going into over current when it does.

Otherwise the amp plays fine even at high power into a 1-ohm (speaker) load, clean solid output, just certain kick drums & low freqs trigger the over current, not even pushed quite to clipping sometimes. If I recall, it even did it when wired to 4-ohm.

The only substitutions I made were as follows: (could this be an issue or should I look further into the protection circuit?)

Q18 & 19: original C3200, I installed 2SC2240ís
Q33: original C3227, I installed a BC639
Q21: original A1275, I installed a KSA1220A

Any info on this would be appreciated, thank you.
  Reply With Quote
Old 16th May 2012, 06:24 PM   #2
diyAudio Member
Join Date: Nov 2003
Location: Louisiana
If you can't find the fault, post the voltage on all pins of the comparator, using pin 4 as the reference (black probe).
  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
Memphis 16-PR1KD RiLoWa Car Audio 19 15th May 2012 07:58 AM
Memphis 16-PR1KD amp repair help (pix) raverx3m Car Audio 15 24th April 2012 08:07 AM
Memphis 16-PR1KD timwebb Car Audio 13 6th July 2010 10:13 PM
problem with my amp memphis 16-pr1kd pollo1008 Class D 0 29th December 2009 10:20 PM
memphis 16-pr1kd chev55_steve Car Audio 0 2nd January 2009 10:46 AM

New To Site? Need Help?

All times are GMT. The time now is 08:18 AM.

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