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help with system

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Old Nov 23, 2005
  #1  
CroCop's Avatar
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From: Winder, Ga
help with system

hey guys my friend has a problem with his system, he has a MA 121XQ and a MA 689i amp and when he tries to turn up the amp the red light comes on, it shuts off until you turn it down.. anyone know why it owuld be doing this?


-thanks
 
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Old Nov 23, 2005
  #2  
kerv's Avatar
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From: Garden City, Mi
whats the watts on the sub and the amp???
 
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Old Nov 23, 2005
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From: Vero Beach, Florida
Sounds like an overheating problem in the amp or there is high resistance in a circuit internal to the amp and it works fine with low current and can't handle high power.
 
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Old Nov 23, 2005
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sub=600, amp=800 maxed, rms for the sub is 300 and for the amp is 400 rms
 
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Old Nov 23, 2005
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he can only turn the volume up about halfway around 20 , if he goes higher it cuts off
 
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Old Nov 23, 2005
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and he says its not overheating
 
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Old Nov 24, 2005
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too low guage wiring?
Blown fuse?
 
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Old Nov 24, 2005
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probably has his gains too high.. turn them down. it's going into protection mode (the amp will stay on, but won't allow itself to power anything) until you correct it (turn it down with the volume ****, or turn the gain down on the amp itself). anyhow, turn down the gains.
 
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Old Nov 25, 2005
  #10  
1 loud truck's Avatar
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From: MASS
Originally Posted by Strider0O0
probably has his gains too high.. turn them down. it's going into protection mode (the amp will stay on, but won't allow itself to power anything) until you correct it (turn it down with the volume ****, or turn the gain down on the amp itself). anyhow, turn down the gains.
i agree i had the same problem when i installed my system tuned in the gains and works at full volume with no problems....
 
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