Hi Guys,

I recently bought a TF Advance which came with;
A pioneer headunit (ol skool)
A 4 channel amp (unsure of brand)
Kenwood 300watt 6*9's
Pretty sure the fronts are standard.

Anyhow the headunit was recently replaced by some "Yum Cha" MP3 player which I got from ebay.
2 reasons for this; a) it plays MP3's and b) it lights up neon blue which matches the rest of the interior lights, ie; dash, console etc... (Note: lights were changed by the previous owner) :P

Now just about everytime I turn the key ON I hear this loud pop/ bang out of my speakers. :flame:

Initially we had the 6*9's going through the amp and the pop/ bang would come as you switched the key OFF. WTF??? :flame:

The unit was installed professionally and the amp was made free so I could run 2*12 subs.

Now it couldn't be my dodgy installation or the cheap unit, as it never did that in my previous car...

Any help/ advice would be greatly appreciated, as it is driving me nuts!!! :headbange

waits for magnat.....

turn off ur comp speakers for 10 secs then turn them back on, same noise
i think its just the power going through the speakers when you turn them on

Turn off Pop is associated with the amplifier..turn the Volume down Before Turning off the Unit or the Key...
If that solves the problem then fine if not we will have to dig deeper..

geez magnat your slipping, i thought the 6x9's would be the problem, seeing as there kenwonts an all

The Kenwood 6x9's are Lovely paperweights but I doubt even that they would be blamed for the Turn off noise...

Kenwood Speakers are a Turn off..........No problem there...


The Yum Cha Mp3 Player could be another problem... Always use a Decent brand Head unit...

Turn off Pop is associated with the amplifier..turn the Volume down Before Turning off the Unit or the Key...
If that solves the problem then fine if not we will have to dig deeper..
Yep tried that too - No go :cry:
Was talking to the tech at autobarn just then and he reckons you get this relay (some technical name thing :eh: ) which the power to the headunit goes through. Delays the power or something so everything is powered before the pop?/! :doubt:
Anyone heard of such thing??? Apparently costs about $15

The Kenwood 6x9's are Lovely paperweights but I doubt even that they would be blamed for the Turn off noise...

Kenwood Speakers are a Turn off..........No problem there...


The Yum Cha Mp3 Player could be another problem... Always use a Decent brand Head unit...



:stoopid:

So its the kenwoods or the "Yum Cha" unit OR BOTH???

But the unit worked fine in the our other car. Unless it served its life (6 months) :confused: ... Would have ripped it out by now, only hanging on cos it just goes with the rest of the ****...
Will start looking for a decent one if we conclude that IT IS definitely the unit.

You can always do this.

Cheap solution if you're handy with basic electronics. :cool:


http://www.angelfire.com/mt/Dopey7/turn_off_delay.html

Sometimes amps like to do this.. I thinks its to remind you that they are still there.. :D

My pc speakers at home do this, but whenever someone turns off an electrical aplicance. Like the crappy light in the bathroom flickers when you turn them on, I get a pop for every flicker. It sucks too when I have the 10" sub right next to me, you get a big 'BOOMPOP"

Same thing happens if I turn the speakers off at the power switch, rather then a soft off on the control panel

(Logitech Z5500's btw)

sounds like some kinda cheapo amp 'turn on' pop.

try the delayed turn on thing. If you really are too gumby to make that delay turn on with some caps, or even a relay, try turning on headunit, and then connecting the remote wire onto the amp, and see if it still pops.

did it pop when u had the oldschool pioneer headunit in there?
btw, a relay isn't gonna cost u $15!!!!!! $1.50 sounds more reasonable :bowrofl: if he did sell u one for 15 bucks though..:shock: MEGA-PROFIT.

No EEk he is correct " a TURN ON POP ELIMINATOR" will cost about $15... More then likely it is the Amp...
What you can do is get a friend to wire up a Relatively new Amp in where yours is, turn on the MP3 Player and if it goes pop then the Mp3 Player is the problem...

Some amps are just more prone to turn on noises then others...

I havnt read any of these posts properly cuz i just got home from work and im tired.

But to me it sounds like, your amp is being turned on before the source is being turned on, which gives the POP sound.

In other words, you have to wire the remote from the h/u to power on the amp, not the remote straight from the ignition. If thats already done just wire the delay into the amps power so when you turn the car on the h/u turns on first then the amp, and make sure the amps turn off before the h.u or else youll still get the pop.

but test to see if turning them on in the right order solves the problem, if not i'd say dodgy amp (you said home made?... jaycar kit amp?), check grounds aswell, always check grounds :p

No EEk he is correct " a TURN ON POP ELIMINATOR" will cost about $15... More then likely it is the Amp...
What you can do is get a friend to wire up a Relatively new Amp in where yours is, turn on the MP3 Player and if it goes pop then the Mp3 Player is the problem...

Some amps are just more prone to turn on noises then others...
Sorry for the dumb questions; But could I possibly disconnect the rca's (that is what they are called right?) on the amp and perform this test??? In my understanding this will eliminate any contact between the amp and headunit/ speakers :confused:


I havnt read any of these posts properly cuz i just got home from work and im tired.

But to me it sounds like, your amp is being turned on before the source is being turned on, which gives the POP sound.

In other words, you have to wire the remote from the h/u to power on the amp, not the remote straight from the ignition. If thats already done just wire the delay into the amps power so when you turn the car on the h/u turns on first then the amp, and make sure the amps turn off before the h.u or else youll still get the pop.

but test to see if turning them on in the right order solves the problem, if not i'd say dodgy amp (you said home made?... jaycar kit amp?), check grounds aswell, always check grounds :p

Hmm, I will get someone to translate that to me, but it sounds like you're on to something :P Sorry, just learning here so need to see it done first time to understand it.

Give it a go and See.. If it still goes pop then you have your answer..

Alright, removed the rca's from the amp yesterday and the pop is still there.
Annoying as all f*k :flame:

So you guys think it is definitely the yum cha head unit??? Unless its the 6*9's as that is the only thing different run off the unit this time. Oh and ofcourse its in another car, which shouldn't make any diff I wouldn't think :doubt:

I would be leaning more towards the Mp3 player then the amp..
only way to be sure is to swap amps with some ones who does not pop, wire it up and see..
if it still pops it will be the mp3 player..

Don't know enough about audio and am just learning here. But isn't disconnecting the rca's eliminating contact with the headunit/ speakers and the amp? If so then there is no amp so it must be the headunit for sure??? Somebody please explain I have no f*kin idea :confused:

Don't know enough about audio and am just learning here. But isn't disconnecting the rca's eliminating contact with the headunit/ speakers and the amp? If so then there is no amp so it must be the headunit for sure??? Somebody please explain I have no f*kin idea :confused:
No because the pop is a "surge" of power and if your amps are still wired up to your speakers they will "pop" from the power. The pop is caused by power going to your amps, dcing the RCAS completely just shows you that your head unit is fine.
It could be the speakers, it could be the amp. Try adjusting settings on the amp, like turning the gains down or frequency control, might be able to block out the "pop". If the speakers are more sensitive than your old ones, it will probably be more noticable.

You disconnected the rcas from the amp?
So the amp was still connected to the speakers, and you switched the amp on and the speakers still popped?

You said the amp was home made or something? what do you mean by that.

Play around with the amps ground point, make sure its really good, but if its really a home made amp or just some chepo one most likely its just the amp making the pop noise and theres not much you can do bout it, you just needa new amp.

You disconnected the rcas from the amp?
So the amp was still connected to the speakers, and you switched the amp on and the speakers still popped?

You said the amp was home made or something? what do you mean by that.

Play around with the amps ground point, make sure its really good, but if its really a home made amp or just some chepo one most likely its just the amp making the pop noise and theres not much you can do bout it, you just needa new amp.

Ok the amp is a "ACA" brand, which I have never heard of, just came with the car.

And all the speakers are running straight off the head unit. Amp is to be used for 2 subs.

So I figured if I disconnected the rca's from the amp then there would be no contact between the amp and the unit, and hence no form of connection between the amp to the speakers.

Hope that is a little clearer :confused:

Ok the amp is a "ACA" brand, which I have never heard of, just came with the car.

And all the speakers are running straight off the head unit. Amp is to be used for 2 subs.

So I figured if I disconnected the rca's from the amp then there would be no contact between the amp and the unit, and hence no form of connection between the amp to the speakers.

Hope that is a little clearer :confused:
Ok,
Let me get this straight...

...You have an amp, that is powering 2 subs.
Your 6x9's that are "popping" are running straight off the head unit now? or the amp?
If you dc the RCA's from the amp and the amp is powering your speakers, you will still get the pop. However if your speakers are running off your hu, in which case dcing RCA's will do jack all, than it's either a bad ground, HU or speakers. Actually i'm more thinking along the lines that you have your remote wire hooked into the wrong wire. There should be a wire for remote in the wiring harness behind the head unit that is specifically designed to delay turn on and off to stop the "pop" sound. I'd try and find this wire.

Ok,
Let me get this straight...

...You have an amp, that is powering 2 subs.
Your 6x9's that are "popping" are running straight off the head unit now? or the amp?
If you dc the RCA's from the amp and the amp is powering your speakers, you will still get the pop. However if your speakers are running off your hu, in which case dcing RCA's will do jack all, than it's either a bad ground, HU or speakers. Actually i'm more thinking along the lines that you have your remote wire hooked into the wrong wire. There should be a wire for remote in the wiring harness behind the head unit that is specifically designed to delay turn on and off to stop the "pop" sound. I'd try and find this wire.

I think you got it man :P

Amp WILL be running 2 subs (when i find some)
The popping is coming out of the speakers which are all run off the hu
The amp atm is running nothing, and that is why i dc the rca's to eliminate contact between the amp and hu.

Someone else also suggested I check the ground, but never thought of the remote wire.

I think you might be on to something TR-Envy. I'll have to get a mate to scope it out for me. Meanwhile if you got any other suggestions please let me know.

Its the Mp3 Player then, I lost track after you said an Amp was involved... So it is the Kenwont 6x9's that are popping and they are off the deck???

Its the Mp3 Player then, I lost track after you said an Amp was involved... So it is the Kenwont 6x9's that are popping and they are off the deck???
Yeh the 6x9's are running off the deck, but i wouldn't write off his hu so soon, it could just be a bad installation (seeing as the hu worked in previous car i dont doubt it).

Yeh the 6x9's are running off the deck, but i wouldn't write off his hu so soon, it could just be a bad installation (seeing as the hu worked in previous car i dont doubt it).
Yea man I agree, cos the hu was taken out of one car and installed straight into the magna. No probs while it was in the other car.

Also magnat's just made me realise that I should take notice of where the pop is coming from ie; out of 6*9's or fron't OR ALL 4??? :confused:

Is it possible to get you guys to explain to me what the remote wire exactly is for? Not knowing sh*t I think its just for the remote for the mp3 player :redface:
Is a stereo still functional without this wire?

The remote wire comes from the head unit and is connected to the remote terminal on your Amp so it knows when to turn on.. It HAS NOTHING TO DO WITH THE REMOTE CONTROL FOR THE HEAD UNIT !!

So all the remote wire is a wire used to tell your external amp to turn on..

The remote wire comes from the head unit and is connected to the remote terminal on your Amp so it knows when to turn on.. It HAS NOTHING TO DO WITH THE REMOTE CONTROL FOR THE HEAD UNIT !!

So all the remote wire is a wire used to tell your external amp to turn on..

Thanks mate :)

I think TR-Envy might be on to something. I'll get the remote and ground wire looked at, or attempt it my self. :doubt:

Basically you have 2 power wires going to your head unit, 1 is constant 12v and the other only supplies 12v when the ignition is turned to acc/on. This wire is the "remote" or "Accessories" wire, now on some cars (magna's in particular) have a special "remote" wire behind the head unit that is designed to stay on for a few seconds when the car is switched off to fade out the head unit.
If you have not installed the remote wire correctly, you can get this "popping" sound.

have you tried making sure everything is earthed really well? make up a earth strap for the head unit also re-earth the earth wire to the chassis with a good connection.

earth the HU to the chassis
earth the HU earth wire to the chassis
earth the AMP to the chassis and install ground loop isolators to the RCA's

should sort it out :D

Thanks guys, I'll try giving it a shot my self this weekend if my mate is busy. :think:

TR-Envy, i'm just learning here but I get the gut feeling that it is the remote wire. Hope its as easy as the remote wire. :pray: