advice on new 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=30393
Printed Date: May 19, 2024 at 1:31 AM
Topic: advice on new amp
Posted By: jjl2191
Subject: advice on new amp
Date Posted: April 14, 2004 at 10:26 PM
hi all. i desperately need some advice on my new amp. i ought this Pioneer GMX424 4 Ch amp off a guy to drive a 12" sub. When he was testing it, it run perfectly, but when I got home it just doesn't work. I got 8 gauge wires for power and ground. The power indicator on the amp blinks but there's no sound. does anyone know anything about this? cheers ------------- JJ
Replies:
Posted By: Ketel22
Date Posted: April 14, 2004 at 10:30 PM
how did you run the amp to the sub, usually people dont reccomend running a 4channel amp for subs. ------------- Quad L Handyman services
Posted By: jjl2191
Date Posted: April 14, 2004 at 10:40 PM
i bridged channel A. but the thing is even i cant get the best result from the running a 4 channel amp for a sub, at least the power should be on. i looked everywhere in the manual it doesnt say anything about flashing power indicator.
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JJ
Posted By: Ketel22
Date Posted: April 14, 2004 at 10:43 PM
it may be due to an insufficient ground, or an overload as far as the ohm's go. have you tried to power it on without your sub attached?
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Quad L Handyman services
Posted By: Ketel22
Date Posted: April 14, 2004 at 10:49 PM
also what is the model and make of the sub?
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Quad L Handyman services
Posted By: jjl2191
Date Posted: April 14, 2004 at 10:52 PM
no, i haven't tried that. and the positve lead is about 5 meters long. i really dont want to cut it until i got the amp sorted and decided where i'm going to put it. i've also got some 14 gauage wires, do u think i can use that to test it? cheers
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JJ
Posted By: jjl2191
Date Posted: April 14, 2004 at 10:56 PM
it hasn't got any writing on the sub itself. the only reason i bought it was because it's in a really NICE enclosure with lights flashing. i think the sub itself is crap. i'm thinking of getting a new sub but at the moment i have to save for a while. ------------- JJ
Posted By: Ketel22
Date Posted: April 14, 2004 at 11:02 PM
14 ga is fine for most any setup, but you should really try to power the amp on with no speakers wire attached, then you need to find out what the sub is because as if right now with that amp its not going to get even 70wrms.
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Quad L Handyman services
Posted By: jjl2191
Date Posted: April 14, 2004 at 11:11 PM
i bought the sub and amp off the same guy and he used the same setup to test it. it was fine. but i'll take ur advice and try it without the sub and see what happens. do u think the blinking meant not overload? ------------- JJ
Posted By: Ketel22
Date Posted: April 14, 2004 at 11:15 PM
ive personally never used a pioneer amp so im not sure, but i assume the blinking like is caused by either the subs impedence is too high for the amp, or you dont have a good enough ground so the power to the amp is not very strong. ------------- Quad L Handyman services
Posted By: jjl2191
Date Posted: April 14, 2004 at 11:17 PM
hey thanks for the advice. i'll try it again tonight. cheers for that.
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JJ
Posted By: jjl2191
Date Posted: April 15, 2004 at 2:57 AM
hey Ketel22, i tried what u suggested but the same thing still happens. any more advice?
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JJ
Posted By: Ketel22
Date Posted: April 15, 2004 at 3:31 AM
where is your amps ground located? is it bare metal?
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Quad L Handyman services
Posted By: jjl2191
Date Posted: April 15, 2004 at 3:58 AM
yes, it is. i drilled a hole on the chasis.
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JJ
Posted By: Ketel22
Date Posted: April 15, 2004 at 4:21 AM
im wondering, is this a new "field" for you because ive seen people buy "working" amps from pawn shops and other person's to return home and see the amps not working because the pawn shop or person changed something out to cause it no to work but caused another one of their items to work.
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Quad L Handyman services
Posted By: jjl2191
Date Posted: April 15, 2004 at 4:36 AM
i hope not. this guy gave me a 30 day warranty. i didn't notice anything odd either. just thinking how the hell could this happen.
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JJ
Posted By: Ketel22
Date Posted: April 15, 2004 at 4:57 AM
if its not past the 30 days i would take it back if the problems presist. if its an honorable company, "the customer is always right"
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Quad L Handyman services
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