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Thread: Door Removal?

  1. #1
    Regular Member parapaul's Avatar
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    Question Door Removal?

    I'm in the process of upgrading the Fisher Price audio system supplied by Vauxhall. I've successfully managed to replace the front component speakers, I've mounted the subs in their box, and I'll be installing the amps hopefully this week.

    However, the speaker wire used by Vx is 20AWG, which will only safely manage around 20W RMS, which makes it a bit dicey even using just an aftermarket HU, and explains why the speakers started to crackle when I turned it up!

    I've used some nice chunky stuff for the new speakers, but I can't see any way of getting it from the speakers through the door multiplug into the car itself, so what I plan to do is drill holes in the door and the bulkhead, fit grommets and run the cable that way.

    I can't get a drill in the gap with the door open at its widest, so how do I safely remove the door, and more importantly, re-hang it so it closes properly again?

    Cheers

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    Save yourself the hassle and run a high pass filter for the front speakers. If your new HU is any good it should give you this option.

    Failing that, solder a 120 microfarad non-polarized electrolytic capacitor in line with the +ve speaker feed. Should give you a 3db/octave roll-off below 70ish Hz where your sub is doing the job much better anyhow.

    Getting rid of the LF massively reduces the current draw of the speaker. 20AWG should be fine then - oh yes, and your speakers will be much easier to drive and will not flap the door panel or trim...

    Happy modding

    James

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    Regular Member parapaul's Avatar
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    I'm running the front through the HU's own HPF already - I know the low frequencies need more power to reproduce but I hadn't realised it would make such a difference to current draw.

    I've got HPF (and LPF for the sub) options from 63Hz, stepped up to 125Hz, with twin 10" subs - any suggestions for the HPF?

    Oh, forgot to say...the fronts will be running around 75W RMS with the amps installed - you still think 20AWG will be OK?

  4. #4
    Ex Vec-C Admin ed taylor's Avatar
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    Vehicle : Vectra Estate

    Trim : Elite

    Engine : 3.2 V6

    Year : 04

    Mileage : 000

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    By the "sound" of it when you have done this audio improvement, your car will be more audiable than your " works verhcal"

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    Regular Member taffy's Avatar
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    Each door is held on to the hinge with a grub screw. Remove each grub screw, undo the bolt holding the check link and disconnect the electrics. The door will then lift off the hinge.

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    you dont need to take the doors off
    this is 6mm

  7. #7
    Regular Member parapaul's Avatar
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    How did you get that through, chris? Is there a hole on each part of the plug?

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    i used 6mm as iv got 150 rms on tap into each doors but you dont need to go that big .

    ill do a how to on this

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    Quote Originally Posted by parapaul View Post
    I've got HPF (and LPF for the sub) options from 63Hz, stepped up to 125Hz, with twin 10" subs - any suggestions for the HPF?
    Around 70-80Hz is normally best

    Quote Originally Posted by parapaul View Post
    Oh, forgot to say...the fronts will be running around 75W RMS with the amps installed - you still think 20AWG will be OK?
    Nope, but if you run 75WRMS with a HPF into stage speakers, you'll go deaf!!
    35-40WRMS is generally fine unless you're competing in SPL comps! The bass to keep up with stage speakers at 75WRMS would shake the car to bits!!

    Let me know what you plan to do as i may nip out and buy some shares in Dynamat

    James

  10. #10
    Regular Member parapaul's Avatar
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    Quote Originally Posted by JamesG View Post
    Let me know what you plan to do as i may nip out and buy some shares in Dynamat
    I've invested in some heavy duty flashing tape from B&Q - £10 for a 10m roll instead of £10 for a 6" square sheet of Dynamat?.....hmmm......

    Even without any amps, the door cards still rattle, thanks to every single one of the screw holes along the bottom edge to the door being just slightly too large for the screw and as a result they just pull out

    Need to invest in some fatter screws next time i'm in B&Q!

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