sub/amp pops when buttons on head unit are pushed

[sweetbrett]

i got an infinity basslink powered sub and installed it yesterday in a 2002 honda civic lx sedan. When i hooked it up to my Aiwa CDC-X504mp head unit, I would get "thumps" from the sub when I changed tracks on the cd and when I changed the eq settings, also when the car turned off. I do not get thumps when the car turns on. I have rechecked the ground to the sub and the head unit. I reran the amp power line from the head unit. I disconnected the RCA lines from the headunit and connected an ipod directly to the sub. When I had the ipod connected there were no pops or thumps.

another mysterious symptom is that the sub remains on after the car is turned off and the servo led stays lit solid when the rca cables from the head unit are still connected. if i disconnect the rca cables then the sub turns off correctly. I have the "auto on" switch set to off. If i plug the rca cables in while the car and sub are off, the sub will turn on and when both cables are connected the servo led will then light up.

i even went out and bought a new head unit to test if the problem was the aiwa or not, but the "thumps" are still there with the new head unit. So I'm completely stumped now.

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[BASSMEKANIK 10+ year member]

well, is tha thump coming from all your speakers or just tha bass link?

 

[sweetbrett]

just the basslink. I tried 3 different ground locations for the sub/amp this morning but the symptoms are the same at all 3 locations and even if the ground isn't attached.

 

[sweetbrett]

bump. still need help

 

[suprag35]

Ill give you a bump seeing as I have The Exact Same Problem.

Alpine iDA-x200 Head Unit connected to the Infinity Basslink using Sub Out RCA connection

IT worked fine at first but after about two weeks The Sub would get loud and distorted for a few socnds pop and not produce sound. The Red Power On Light remains on the servo light is off. If I play around with the head unit settings ie Loudness on crossover freq it will come on but it seems random. I really have no idea I'm guessing mabey the head unit Pre Out Voltage has something to do with it but seeing as the specs are in order I don't know

Basslink -

Input Sensitivity: 50mV – 4V Line-Level Input

1V – 16V Universal Interface

Alpine iDA-x200

Maximum Pre-Out Voltage 2v/10k ohms

Any Help Would Be greatly appreciated And The power light remains on so it cannot be ground or power

 

[Enellz 10+ year member]

Try grounding your RCA's

 

[jdawg 5,000+ posts]

move your hu ground to another spot

 

[suprag35]

So I Need To Actually Ground the Head Unit to the chassis not just attach it to the factory Harness Correct?

 

[jdawg 5,000+ posts]

ground the rca wires, the outer part wrap wire around then to the case of your deck. I would move away from the factory ground and put it somewhere else too.

 

[jdawg 5,000+ posts]

 

[suprag35]

Got It I will Try That tommor Thanks For THe Help