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car sound system question

Discussion in 'Channel Zero' started by seeking, Jan 28, 2004.

  1. seeking

    seeking Dirty Dozen Crew

    Joined: May 25, 2000 Messages: 32,277 Likes Received: 234
    last night i hooked up amp/subs in my car. now, when i turn the stereo on and off, i get a 'pop' sound from the subs. what is this caused by, and how can i prevent it? it's not a huge deal, but it doesnt sound that great, and there must be some way to stop it.

    special bonus question:
    my subs aren't hitting nearly as hard as they used to in my old car. granted, it was a hatchback (i'm in a jetta now) so there was nothing between the subs and the cabin, but still.... is this because i'm using the stock head? this is a pretty basic set up were talking here...JL 10's, and a sony amp. both of which are atleast 6 or so years old. nothing fancy or extravigant. i dont want some crazy system, just something that sounds decent.

    ok, i guess that part isnt really a question, but a statement.
    so just answer the first.
    and feel free to include any audio secrets.
    holler.
     
  2. Pistol

    Pistol Dirty Dozen Crew

    Joined: Jul 12, 2001 Messages: 19,363 Likes Received: 299
    i believe that pop sound is coming from your amp. since it's hooked up to a factory radio you needed a Line Output Converter so that might be it.
     
  3. johnny

    johnny Dirty Dozen Crew

    Joined: Feb 15, 2003 Messages: 7,231 Likes Received: 16
    ka-ching, ka-ching
     
  4. seeking

    seeking Dirty Dozen Crew

    Joined: May 25, 2000 Messages: 32,277 Likes Received: 234
    i've got a LOC, that's what it's running off. it's connected to the stock amp. the LOC lines are feeding off of the signals INTO the amp, not out to the speakers, which i've been told is the better way to go.

    there must be a way to 'not' have the pop.
     
  5. johnny

    johnny Dirty Dozen Crew

    Joined: Feb 15, 2003 Messages: 7,231 Likes Received: 16
    seeks, i used to know how to solve that but it's been so long. i think pistol's onto something. i'll ask my broham too. he's got an eclipse 8810 sub forsale too if you're interested...

    [​IMG]
     
  6. seeking

    seeking Dirty Dozen Crew

    Joined: May 25, 2000 Messages: 32,277 Likes Received: 234
    not really. i'll get a new head before new subs.
    what's he want for it though?

    i'm sure pistol is right, i mean, i know it's a signal issue, i just dont know how to fix it.
    someone was saying something about a 'relay' or soemthing like that, which effects the amount of power that the 'remote turn on' puts out. might that be it?

    this summer im gonna pull some serious install shit.
    building the subs into the sides of the trunk i think. that or a false floor. either way, it's gonna all be hidden.
     
  7. SteveAustin

    SteveAustin Veteran Member

    Joined: Mar 12, 2002 Messages: 7,042 Likes Received: 2
    I remember one of my boys having this exact same problem...I'll see if I can fish an answer out of him.
     
  8. Milton

    Milton Senior Member

    Joined: May 21, 2003 Messages: 2,253 Likes Received: 0
    Its probably because you're connecting to the stock head. As far as it not being as loud as it was before, its cause hatchbacks are always louder. Just slide the box as far back against the wall of the trunk as you can, and face the speakers towards the back not the front. And if you're running a sealed box think of venting it... Maybe?

    WOrd
     
  9. Overtime

    Overtime Dirty Dozen Crew

    Joined: Apr 22, 2003 Messages: 13,986 Likes Received: 311
    i know that happens to my computer system when i turn the lights off, light it is gettin a huge jolt of enery, its probbaly something in relation to that, i would ust take it to a shop and they will do it cheap steez. Congrats on the jetta, i wish i still had mine...lucky seeks
     
  10. khaotic970

    khaotic970 New Jack

    Joined: Aug 23, 2001 Messages: 18 Likes Received: 0
    yeah man congrats on the car thats sick! I wish i knew about this shit I just got a Alpine deck installed at the local place here and it was good work! Look up in the owners manual if ou got for that problem. Also the local stereo shop could probally fix it for free! just tell them you want a quote tell them to listen and they will tell you whats wrong!! yeah boye
     
  11. heavyLox

    heavyLox Veteran Member

    Joined: Feb 2, 2002 Messages: 7,196 Likes Received: 17
    this is exactly what you need, my explanation will confuse you more, but when the stock gets power it sends a fully loaded signal to the amp powering the sub, thus quick POP. THis happened in the truck after i got the sub there i lived with it fir a week or so then got the Line out put converter and fixola.


    Its just a lil thingie that goes between the amp line out and the line out to control the flow of current to the amp, so it takes a second th get the juice to your amp, so you hear the reg speakers first then once the power is full it turns the sub on so no pop.
     
  12. When

    When 12oz Loyalist

    Joined: May 4, 2000 Messages: 10,294 Likes Received: 3
    the stock head unit doesnt help things,
    but its all about spl (sound pressure level)
    a trunk is a very different environment airspace wise than a hatchback
    you just need to get the components you want to run
    -head unit
    -amp(s)
    -sub(s)
    and then do some calculations so you can
    take advantage of the airspace you have
    and also make a correct sub enclosure for it
     
  13. anonymity1

    anonymity1 Senior Member

    Joined: Apr 28, 2003 Messages: 1,945 Likes Received: 0
    That sound is not good...could cause damage to your audio equipment
     
  14. geezpot

    geezpot Elite Member

    Joined: Apr 20, 2003 Messages: 3,904 Likes Received: 158
    Relay Pop
    Relay turn-off pop is caused by components in the system turning off before the amplifier completely shuts off. In most cases, the component will be an EQ or signal processor. Usually adding a little turn-off delay to the offending processor can fix the problem. This allows the processor to turn off after the amplifier, preventing the pop. Many components have this feature built in, and it is adjustable. Check the manual to see if your component has this feature available.
     
  15. GucciCondom

    GucciCondom Veteran Member

    Joined: Jul 29, 2003 Messages: 5,558 Likes Received: 168
    my boy had his shit rigged up all grimey..and when he would open the door the subs would make a thump like the door was music or someshit hah.
     
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