bad amp?
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=137212
Printed Date: April 28, 2024 at 1:31 PM
Topic: bad amp?
Posted By: key67
Subject: bad amp?
Date Posted: September 06, 2014 at 2:35 PM
This is my first car amp install, years of hooking up home audio. It does not matter how I put my inputs or outputs I get no channel separation. I even hooked up one speaker to the pos front and pos rear and was getting both channels thru that speaker. Its a used Eclipse EA3422 4/3/2 amp, cant find any docs for it. Did the seller rip me off?
Replies:
Posted By: key67
Date Posted: September 06, 2014 at 2:36 PM
btw, my goal is two speakers, no sub's
Posted By: i am an idiot
Date Posted: September 06, 2014 at 2:58 PM
Are you using a Pioneer head unit?
Posted By: key67
Date Posted: September 06, 2014 at 3:33 PM
no, My headunit is a bluetooth and volume board, checks out fine on my home and portable systems.
https://store.sure-electronics.com/audio/aa-ab41132
https://store.sure-electronics.com/audio/aa-ab41134
(can get a bit of a better price on the auction site)
Posted By: i am an idiot
Date Posted: September 07, 2014 at 8:20 AM
Plug only one rca cable into the amp. Do all speakers play now?
Posted By: key67
Date Posted: September 07, 2014 at 8:36 AM
yup
Posted By: i am an idiot
Date Posted: September 07, 2014 at 9:32 AM
Take a piece of 18 gauge or so wire. Ground one end to wherever you have the amp grounded. Strip a few inches off the other end and wrap it around the shield of the RCA cable. Does this change anything?
Your home system has ground on the shield of the rca. Your car amplifier is depending on the ground for the rca cable to be provided by your deck. We are not familiar with your device, it may not have ground on the RCAs.
Posted By: key67
Date Posted: September 07, 2014 at 9:48 AM
no diff, just did a check on the bluetooth and vol boards, both ground the rca to vehical.
Posted By: i am an idiot
Date Posted: September 07, 2014 at 3:09 PM
It is looking like you have a bad amp.
Posted By: key67
Date Posted: September 07, 2014 at 4:12 PM
par the course of my luck, now to figure if its repairable. Ill use it in the meantime, no probs with it other than that.
Posted By: key67
Date Posted: September 07, 2014 at 7:18 PM
did some reading on 4/3/2 amps and as it turns out 2 and 3 are always mono no matter what ya do, I popped it to 4 channel and now have seperation. Its ok to only have two speakers? turn the gain down on the channel not being used? bridge them and crank it all?
One thing that I did find broke was the bass by pass for the front , the pot just keeps turning, the rest of them didnt change anything in my ears though. For now, Im happy
Posted By: key67
Date Posted: September 07, 2014 at 7:24 PM
nvm the ?'s I got it figured now
thanks
|