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sub stop, but amp work fine


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sublinux 
Copper - Posts: 83
Copper spacespace
Joined: September 07, 2008
Location: Quebec, Canada
Posted: September 17, 2008 at 10:27 AM / IP Logged  
Hi, i got a 1998 Chevrolet cavalier.
My System
Amp: Pioneer GM-7400M 400 Watt RMS at 2 Ohms
Sub: Pioneer TS-W257D4 10" 350 Watt RMS at 2 Ohms
Headunit: Sony Xplod CDX-GT220
Sub wired in 2 Ohms
Eq Custom
Low -6
Mid +0
Hi +6
Sub +9
The problem is.. when i put a good bass song and i put the volume more than 28 (Max is 34) the sub stop and come back but the amp still doesnt stop or flash . The light on the amp always blue and never change.. And the car is running when i do that.. What the problem ? Lack of power???
DYohn 
Moderator - Posts: 10,741
Moderator spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spacespace
Joined: April 22, 2003
Location: Arizona, United States
Posted: September 17, 2008 at 11:06 AM / IP Logged  
Could be many things including a defective woofer, but the most common issues causing this are 1) amp gain too high, 2) woofer impedance too low, 3) power issues including alternator overload or bad ground.  I suggest starting by reading and following the "How to set your gain" thread.
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sublinux 
Copper - Posts: 83
Copper spacespace
Joined: September 07, 2008
Location: Quebec, Canada
Posted: September 17, 2008 at 11:12 AM / IP Logged  
Well, i alternator have 1 year and my battery have 3 days , but i think its the ground because my ground its the antena.. i have screwed it on the antena screw
DYohn 
Moderator - Posts: 10,741
Moderator spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spacespace
Joined: April 22, 2003
Location: Arizona, United States
Posted: September 17, 2008 at 1:39 PM / IP Logged  

sublinux wrote:
Well, i alternator have 1 year and my battery have 3 days , but i think its the ground because my ground its the antena.. i have screwed it on the antena screw

Read the "What is a proper ground?" sticky.

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sublinux 
Copper - Posts: 83
Copper spacespace
Joined: September 07, 2008
Location: Quebec, Canada
Posted: September 17, 2008 at 1:57 PM / IP Logged  
Ground now good . Direct on frame.. Alternator and battery are new, woofer and amp have only 2 days
frozenuts 
Member - Posts: 36
Member spacespace
Joined: August 26, 2008
Location: California, Neutral Zone
Posted: September 17, 2008 at 4:04 PM / IP Logged  

I would do what the young man said in the first reply.

Have you smelled anything cooking yet?

all bad things come in moderation. do not shop at fry's. Get your own log in Omar.
frozenuts 
Member - Posts: 36
Member spacespace
Joined: August 26, 2008
Location: California, Neutral Zone
Posted: September 17, 2008 at 4:05 PM / IP Logged  
frozenuts wrote:

I would do what the young man said in the first reply.

Have you smelled anything cooking yet?

Also, unless you were hunting it, you have the cavalier, you do not got it...

all bad things come in moderation. do not shop at fry's. Get your own log in Omar.

Sorry, you can NOT post a reply.
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