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amp problems jbl px300.4

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=108353
Printed Date: May 12, 2024 at 2:35 AM


Topic: amp problems jbl px300.4

Posted By: ragsports
Subject: amp problems jbl px300.4
Date Posted: October 23, 2008 at 1:25 PM

Ok so here are is the problem.  When first starting up my stereo today i noticed my left rear speaker wasent working.  At this point i thought it was just a bad connection.  Halfway from my house while driving to school the speaker turned on.  There was a popping commin from the speaker right before it turned on.  It also did the same thing on the way home.  When i returned home i checked all connections as well as the speaker resistance.  All turned out to be a good connection.  I then turned my attention to the amp.  Lookin at it i just started moving switches and messing around with the gains to see if i could locate any problems.  I noticed when i switched the slope switch from 24 db octave to 12 db octave the speaker came on, (this was just the one for the rear speakers) i switched it back to 24 db octave and now the speaker is playing.   Do you think i could possibly have a bad connection in that switch?  But if i did wouldent that cause both rear chanels to go out?  Any thoughts or suggestions would be appericated, thanks  O yeah btw the speakers are 6*9 infinity kappa, the old series (white Cmmd 4 ohm)



Replies:

Posted By: i am an idiot
Date Posted: October 23, 2008 at 5:58 PM

A bad connection on said switch could affect only one channel.  The switch has 2 seperate switches, one for left channel and one for the right channel.  A lot of times the switches get dirty, If you move it back and forth in a rapid motion, a lot of times this will clean the switch and it will work fine.






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