thump when changing station

[monkeyman 10+ year member]

hello guys i was wondering if you can help me with a problem i am encountering with my sound setup ...everytime i change the station on my radio the bass will thump real loud or when i change from FM to CD it will thump it does the same sound when i shut off the ignition switch on the car big thumb!

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[JustStoppingBy 10+ year member]

your amp doesnt have "soft turn on/off".. when it sense NO signal it doesnt MUTE the output till signal comes back in.

 

[vvblazers777 10+ year member]

Wait for someone to chime in, but it sounds like a rca out on your hu to me.

 

[vvblazers777 10+ year member]

your amp doesnt have "soft turn on/off".. when it sense NO signal it doesnt MUTE the output till signal comes back in.

This is the other thing I was thinking of. I'm pretty sure he is correct.

 

[Ctminime 10+ year member]

when i had the "thump" problem on my old pioneer 6800mp it happend with the radio and between tracks on cds and ****.... it ended up being a grounding issue, so u might try to find that tutorial about how to ground ure rcas. cuz im betting that is more than likley the problem.... just my 2 cents

 

[monkeyman 10+ year member]

last time i tried grounding my RCA's to my pioneer on the chasis the fuse on my amp kept blowing up... whats the dealio

 

[vvblazers777 10+ year member]

for some reason I'm thinking its an rca out in your stereo. When a rca goes out, and you have subs it tends to make this thumping noise.

 

[vvblazers777 10+ year member]

How old is your hu?

 

[monkeyman 10+ year member]

its a pioneer DEH-P3900MP , dont know what year it came out in but as i was saying i tried grounding the RCA's on the stereos chasis and the fuse on my amp would blow ......is that fishy or what

 

[JustStoppingBy 10+ year member]

thats usually a bad sign.

pawn it for 40 bucks... buy a used headunit here..

 

[irishpride 10+ year member]

for some reason I'm thinking its an rca out in your stereo. When a rca goes out, and you have subs it tends to make this thumping noise.

the newer pioneers have this problem if you don't ground them correctly. I have/had the same problem. I grounded the RCA's off the chassis. Problem went away.

PS i got the loud pop when i changed stations, skipped tracks and turned the volume all the way down.