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motor noise


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aem7506 
Member - Posts: 34
Member spacespace
Joined: March 18, 2004
Location: Afghanistan
Posted: October 14, 2004 at 10:14 PM / IP Logged  

i jsut got ddone doing a sstem for a friend and i got it all done sounds good but whne the volumes down the subs wit there and pulsate or play liek the engine is running and its really loud if anyone could help me with this problem id appreciate it

heres the diagram of the car 

motor noise - Last Post -- posted image.

<<98 Mercury Mountaineer>>
"Sound"
Pioneer DEH7300
Pioneer 5/7 (4)
12'Kicker compvr (2)
900 Rockford Fosgate Amp (2)
Rushman 
Silver - Posts: 380
Silver spacespace
Joined: September 28, 2004
Location: United States
Posted: October 14, 2004 at 11:57 PM / IP Logged  

Sorry I dont understand...............IS the engine on the car running when you hear this noise?

99 F-one fitty
Pioneer Premier H/U
Alpine EQ
Kicker 1200 amp
4 Kicker comp 10s
6 kicker SS65.2 components
rza51385 
Member - Posts: 1
Member spacespace
Joined: October 25, 2004
Location: United States
Posted: October 25, 2004 at 3:52 AM / IP Logged  
what you go to do is check all of the wires for the head unit in the dash if there is a wire touching and metal in the car you will get feed back in the subs. i another thing you have to check is if a cd is loading up and you can hear it in reading the cd in the subs the rca jacks on the head unit are messed up and you need to get a new one. this just happened to me about a week ago
audiopro111 
Copper - Posts: 160
Copper spacespace
Joined: September 24, 2004
Location: United States
Posted: October 26, 2004 at 1:02 AM / IP Logged  
make sure u ran rca's separate from power and remote line also make sure if u grounded over a painted area u grind out that area and have a solid ground
AudioPro111
genuinedraft8 
Member - Posts: 8
Member spacespace
Joined: October 26, 2004
Location: United States
Posted: October 26, 2004 at 1:17 AM / IP Logged  
A crappy amp will cause interference as well. In my case, the amp that powers my highs have horrible interference with the engine, but the amp for the lows does not.
Seperate RCAs from power, check to make sure that the alternator on the car is in good condition, and check the amp (ie test the same setup but with a different amp).
motor noise - Last Post -- posted image.
I'm trying to learn... trying.

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