Jump to content


Show
Photo

! Guide ! Installing A Sub Box To Mk7


  • Please log in to reply
63 replies to this topic

#1 TitaniumSteve

TitaniumSteve

    Settling In Well

  • New Member
  • PipPipPip
  • 83 posts
  • Ford Model: Fiesta Mk7 1.6 TDCi Titanium
  • Location:
Contributor

Posted 05 April 2009 - 09:34 PM

I am writing this guide in addition to my first guide to help others if they want to install a sub box into the Mk7 using a RCA convertor to create pre amps out.

Firstly I will add that this is not a simple job and I would not advise this to be done by a novice. How ever I hope my guide will make it easier for anyone trying to do the same. Also I will add for those that are screamish :lol: this does invole taking apart a 3 week old car, but absolutly no damage was done to my new little car.

So here we go.

Take out the front head unit, refer to my FIRST guide to do this. Once you have the head unit out you will have to disconnect two multi blocks from the rear of the unit, disconnect both and remove head unit to a safe place. The smaller multi block is just data cables. The connection you are interested in is the larger multiblock. When you look the block you will see 5 pairs of wires top n bottom plus a single cable on its own. The single cable on its own is the ignition live (only goes live when ignition is on). At the other end of the block you will see two fatter cables, the cable with black on it is the ground, and the other is the permannet live. The other eight cables which are a variety of colours are the speaker cables. The top row is the positive and bottom is negative.

Posted Image

Now take your RCA convertor on it you will have two positive speaker cables and two negative speaker cables. To avoid cutting cables you can push a bare end cable into the back of the multi blocks so push two positive into the top row and two positive into the bottom row. It is not important which speaker connection you use just as long as you use the same for both neg and pos. On your RCA convertor you will also have a positive and negative cable, again push the bare end cable from your RCA convertor into the appropriate neg and pos connection on the multi block. Now with your ampilifier kit you will be supplied with a long blue remote live cable, this cable is pushed into the back of the ignition live cable (the single cable on the multi block), this will mean your amp will on go on when your ignition is on.

Next you will have to feed your RCA cables, (supplied with your amp), your blue remote cable and your power cable to the rear of the car. First tie off your RCA cable and remote cable to something at the head unit so you dont pull them through.

Posted Image

It is fairly easy to feed your RCA cables and your remote cable down from the head unit to the floor. You can then tuck them in behind the carpet, and lead them to the small side panel on the passenger side.

Posted Image

Now you can take your main min 8 gauge power cable and connect it to the battery.

Posted Image

Then this cable can be fed down through a hole next to the washer bottle which will bring it out by the inner arch wheel trim. Thread it round the arch, and by the door hinge you will see some foam sound insulation, this can be moved to the side so the cable can be fed through the hinge to the interior.

Posted Image

Now lift up the rubber waterproof trim and feed 3 cables along it, the power cable the RCA cable and the remote cable, and they will now come out by the rear seats.

Posted Image

It is now possible to pass all 3 cables along the side of the back seat so that they come out in the boot.

Posted Image

Now just when you thought you were done you now have to create an Earth cable, this should be as short as possible and taken from the rear. I used one of the 13mm bolts that hold seat belt mounting in. Simple take out bolt connect your earth cable and put bolt back in.

Posted Image

Now the fun bit connect all those cable up to your amp. I am using a active sub, meaning the amp is bulit into the sub box. To test it temporarily reconnect the front head unit and dash and power it up to see if it all works, (remember to turn on your ignition).

Posted Image

It should all now come on. With me it all worked first time, I was very pround of myself.

Posted Image

You can now put the car carefully back together. I did this whole job without a single scratch and no damage to the car at all, the entire system could be taken out without any sign that had been there.

I hope this guide has been of some use. Any questions then please ask.

Steve

Have something to contribute?

Sign in or register to start a topic...

Sign up to FOC Premium Membership To Remove These Ads

#2 JAR897

JAR897

    Serial Poster

  • New Member
  • PipPipPipPip
  • 479 posts
  • Ford Model: Ford Fiesta MK7 Titanium 1.6 TiVCT

Posted 05 April 2009 - 09:40 PM

Wicked guide. I'm considering doing it.. what SUB did you use and how much did it cost?

I want to see how to initial speakers sound first. Also, how much room did it take in your boot - Can you upload a photo of your boot now please?

Thanks.

#3 Jonny87

Jonny87

    Ford Enthusiast

  • New Member
  • PipPipPipPipPip
  • 1,742 posts
  • Ford Model: Fiesta
  • Location:

Posted 05 April 2009 - 09:53 PM

Very nice Steve. Just out of interest, is that red power cable visible around the passenger door frame?

#4 JAR897

JAR897

    Serial Poster

  • New Member
  • PipPipPipPip
  • 479 posts
  • Ford Model: Ford Fiesta MK7 Titanium 1.6 TiVCT

Posted 05 April 2009 - 10:06 PM

OK so I'm now looking very hard into different subs and alike. I'm looking in perticular at this one:
Vibe CBR12 Active Evo Subwoofer


Would this fit the bill?

Also, What kind of difference does it make to the overall audio? Is it a significant improvement over the already existing sound (i.e. is it a 200 improvement?) lol.

My friends have installed a sub before (granted in a corsa) so i will have some help - I would go for halfords 'WeFit' but I'm nervous they will scratch things and do a bodge job anyway.

Still in 2 minds - Will mull it over with father tomorrow - He always has words of wisdom.

#5 TitaniumSteve

TitaniumSteve

    Settling In Well

  • New Member
  • PipPipPip
  • 83 posts
  • Ford Model: Fiesta Mk7 1.6 TDCi Titanium
  • Location:
Contributor

Posted 05 April 2009 - 10:25 PM

Very nice Steve. Just out of interest, is that red power cable visible around the passenger door frame?


At the moment it is visible about 3 inch of it, however I am going to be fitting some black trunking to go over it. I would have done it today just forgot.

OK so I'm now looking very hard into different subs and alike. I'm looking in perticular at this one:
Vibe CBR12 Active Evo Subwoofer


Would this fit the bill?

Also, What kind of difference does it make to the overall audio? Is it a significant improvement over the already existing sound (i.e. is it a 200 improvement?) lol.

My friends have installed a sub before (granted in a corsa) so i will have some help - I would go for halfords 'WeFit' but I'm nervous they will scratch things and do a bodge job anyway.

Still in 2 minds - Will mull it over with father tomorrow - He always has words of wisdom.



It is funny you should mention that speaker set up, as it is the 10 inch version I have. Picture below shows the boot, I would say that the 12 inch would be to big better going for 10 inch. I have not driven car since I fitted the unit, so i have only listen to it whilst I was testing it out and yes I am very happy with the sound, not sure if I would spend 200 on doing it thro. I had this unit spare in my garage has I took it out of my other car, my other car I have just built a fully customised 600 boot install for it. It was not worth selling this unit so into the fezzer it went, this unit cost 150.

And no don't go anywhere near Halfords for doing this job, unless you want a spotty 18 year old poking screwdrivers around the paintwork of your new car.

Posted Image

#6 JAR897

JAR897

    Serial Poster

  • New Member
  • PipPipPipPip
  • 479 posts
  • Ford Model: Ford Fiesta MK7 Titanium 1.6 TiVCT

Posted 05 April 2009 - 10:28 PM

Yea probably true. Not much boot space - Although I don't really have anything to carry. Lol.

I will have to wait and see what I think of the normal speakers.


Thanks for all the info tho Steve!

#7 Jonny87

Jonny87

    Ford Enthusiast

  • New Member
  • PipPipPipPipPip
  • 1,742 posts
  • Ford Model: Fiesta
  • Location:

Posted 05 April 2009 - 10:34 PM

Cheers Steve, is there no way of bringing the power cable straight into the car from the front?

#8 TitaniumSteve

TitaniumSteve

    Settling In Well

  • New Member
  • PipPipPip
  • 83 posts
  • Ford Model: Fiesta Mk7 1.6 TDCi Titanium
  • Location:
Contributor

Posted 05 April 2009 - 10:44 PM

Cheers Steve, is there no way of bringing the power cable straight into the car from the front?


I looked into taking it thro the bulkhead but without taking out the glove box this would be hard. All the cables passing thro the bulkhead are above the height of the glove box. The cable I have installed is barely visible and will be even better with trunking on it. There may be another way to bring the cable inside as I did not spend ages looking but I am happy with the way I done it, if you find another easier way let me know.

#9 Jonny87

Jonny87

    Ford Enthusiast

  • New Member
  • PipPipPipPipPip
  • 1,742 posts
  • Ford Model: Fiesta
  • Location:

Posted 05 April 2009 - 10:53 PM

Thanks for the reply Steve, please post a pic when you have trunking, ta

Jon

#10 Nipz

Nipz

    Ford Enthusiast

  • New Member
  • PipPipPipPipPip
  • 1,052 posts
  • Ford Model: Ford Fiesta Zetec MK7
  • Location:

Posted 06 April 2009 - 09:21 AM

Amazing guide :) but i still dont get why people want to take up all their boot space with a huge sub :P

#11 KeithC

KeithC

    Ford Enthusiast

  • New Member
  • PipPipPipPipPip
  • 1,163 posts
  • Ford Model: New Fiesta 1.4 Titanium
  • Location:

Posted 06 April 2009 - 10:41 AM

Amazing guide :) but i still dont get why people want to take up all their boot space with a huge sub :P


Coz it's the biz wiv all that booming, innit. ;)

#12 Nipz

Nipz

    Ford Enthusiast

  • New Member
  • PipPipPipPipPip
  • 1,052 posts
  • Ford Model: Ford Fiesta Zetec MK7
  • Location:

Posted 06 April 2009 - 03:04 PM

Coz it's the biz wiv all that booming, innit. ;)


lol give me a woop woop!

#13 TitaniumSteve

TitaniumSteve

    Settling In Well

  • New Member
  • PipPipPip
  • 83 posts
  • Ford Model: Fiesta Mk7 1.6 TDCi Titanium
  • Location:
Contributor

Posted 06 April 2009 - 07:46 PM

Just done my first day working in my car with my sub on in between lesson and my sound system sounds so much better than the original one. That is why plp do it because it makes what u are listening to sound pleasurable and not tiney. Anyway its not like I need the boot to carry a fridge around in it and there is plenty of space for the shopping.

#14 JAR897

JAR897

    Serial Poster

  • New Member
  • PipPipPipPip
  • 479 posts
  • Ford Model: Ford Fiesta MK7 Titanium 1.6 TiVCT

Posted 06 April 2009 - 09:36 PM

I'm looking at the exact same sub you have Steve for 139 from HERE! What do you think?

I would install it myself - but am a perfectionist and would not want ANY wires to be showing ANYWHERE without using ANY trunking etc.

Also, could you point the sub sideways to free up more room in your car. How is the sub secured to the boot so it doesn't roll around?

#15 squaddiefox

squaddiefox

    Settling In Well

  • New Member
  • PipPipPip
  • 49 posts
  • Ford Model: fiesta flame
  • Location:

Posted 07 April 2009 - 02:15 AM

couple of things, i know i haven't posted much so i hope you don't mind, with the power cable running next to the audio cable you are likely to get a slight whistling sound as you accelerate from the subwoofer. the best way to avoid it is to run the cables either on opposite sides or run one up the middle of the car and the other down the side.

is that power cable fused? if not i would get a fuse in their sharpish, no point paying out good money for a car and audio equipment and frying it when you get a voltage peak and burn out the power cable to the amplifier. as you said, it runs passed sound proofing which is quite combustible.

one last thing, why point the sub to the rear of the car? just makes the boot vibrate and makes a decent guitar riff sound crap if turned up.

Have something to contribute?

Sign in or register to start a topic...


Not what you're looking for?

Register now, we have a huge community of enthusiasts to answer any questions you might have



1 user(s) are reading this topic

0 members, 1 guests, 0 anonymous users