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Thread: How hard is it to fit a sub into a Mk4 astra sport?

  
  1. #1
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    Riskoe's Avatar
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    How hard is it to fit a sub into a Mk4 astra sport?

    Right I have this sub which my lovely mate Kev gave to me for free haha



    I know its not the best but Im on a tight budget and itll do for what I need.

    Halfrauds has quoted me 65quid to fit which aint happening lol, and a mate of mine has offered to fit it next week if he has the time, but how hard would this be to fit?

    Anyone have a pic guide preferably on how to do it, which wires would I need?

    The only part Im worried about is the connecting it to the battery part

    From what Ive gathered its:

    Power lead from battery to sub
    RCA leads from head unit to sub
    Ground the sub to the chassis.


    Im not too sure on these though:

    Attaching the signal wire to the head unit
    and attaching speakers to it?


    I have standrad speakers and wont be upgrading them for a while.

    Any help would be grand!

    Cheers,

    Steve.
    1.8 SE2 Coupe! Let the mods begin...

  2. #2
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    Riskoe's Avatar
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    Looks complicated to me but I bet it isnt!
    1.8 SE2 Coupe! Let the mods begin...

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    futur3's Avatar
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    Its not hard... if you know what your doing.. its always hard the first time i found.

    Personally i would watch your mate then your be ok to do it next time.

    Cheers

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    jimcoupe's Avatar
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    i have just this moment fitted mine it was easy only thing i found hard was finding somewhere to put the power cable through the car but sorted that now it sounds awsome try it have ago dont get ripped off with these car audio places

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    motionblur's Avatar
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    power cable goes to the battery, rca cable (audio signal) goes from amp to head unit. which head unit do you have? because the standard astra ones dont have an rca out. the remote wire also goes to the head unit. and the earth cable goes to a suitable earth location (bare metal)

    does your sub have an amp built in? if so you dont have to worry about connecting the amp to the sub, as it will already be done. but if your sub doesnt have an amp built in, you're going to need an amp as well.

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    Deano_Sxi's Avatar
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    if ur mate knows what hes doing

    i would watch him, and ask questions for enxt time

    or even call him up to ask him

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    Keefo's Avatar
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    I belive that sub has a built in amp.

    Wiring it all up is not hard at all mate!!

    Power from battery to amp.
    Then a Ground from the amp to somewere on the car (a few people use the bolt behind one of the lights)
    RCA from head unit to amp (aftermarket head unit)
    Remote cable from head units ISO cable to the amp (usualy a blue wire, this just turns the sub on when the head unit comes on)

    and thats basicaly it... as its got the amo built in the sub should already be wired to the built in amp!

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    Toms1989's Avatar
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    Few things to remember when wiring amps and subs for safety reference

    1. ALWAYS disconnect the negative battery lead, that way then you can avoid the positive wire touching the chasis and sparking and popping fuses and such and prevent fires
    2. Make sure that 12V wires aren't being pinched on sharp metal points, again to avoid sparking and shorting and such
    3. Make sure that the inline fuse on the positive wire is within 15cm of the battery, this is to ensure that the fuse on the power line goes before the one on the amp, that way it minimises damage to amplifiers and fires again

    follow those and the instructions above and you should be fine mate
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