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How To Fit Sub To CD400 Head Unit - Printable Version

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How To Fit Sub To CD400 Head Unit - TUFFKNUX - 11:th-Feb-2015

Today I made it my mission to fit my Fli 12" subwoofer into my Astra.

Tools you will need:

Speaker to RCA converter: £6.99 from eBay. I suggest this one as it fits snug behind the CD unit: HERE (see photo below)
Screwdriver set (a few sized flat and phillips)
Electrical Tape
Patience & Time.

First of all you're going to want to remove the stereo system. If you're unfamiliar with how to do this, there is a How-to by Rusty2009 HERE that shows you how to do this. Now you need to focus on the big wiring loom/plug that you pulled out of the CD unit and the speaker to RCA converter. Strip the ends of the converter speaker wires and double over to make them a bit thicker. Now look at the back of the wiring loom and it should look like this:


Use this diagram to help connect your speaker to RCA adapter to the correct terminals:

(This is a view from the front and remember, you're working from the back of the loom/plug)

To connect the terminals, just push them into where the current wire is sitting but make sure it gets a grip and doesn't pull out too easy. Once you've pushed all four speaker cables in firmly it should look a bit like this:


Now make sure you re-wrap the group of wires up with the rest of the wires to save them from coming loose and/or falling out.

The reason I recommended the converter I have done is because it sits perfectly behind the CD unit:


I then attached the remote on/off (antenna) cable to the spare terminal in the cigarette lighter the same way as I did with the CD loom/plug.

It's now up to you how you run the cables through to the back of your car. I ran mine underneath the door trim through into the boot.

Another issue that may arise is getting the power cable from the engine bay into the passenger foot well. I used the biggest phillips screwdriver I had and from the the passenger foot well, pushed the screwdriver through the grommet (be careful not to catch any cables). Once I could see the screwdriver from the engine bay side, I taped the power cable to the screwdriver and pulled it back through. This may take a few attempts (electric tape doesn't work).

Once you have the power cable linked up to the battery and inside the car just transport it to the boot as neatly as you can.

For the earth cable, there's an earth point in the right hand light panel in the boot. All I needed was a 10mm washer and nut and the sub was earthed.

Link all the sub cables up to the sub, cross your fingers and crank the stereo up!

If you need anymore pointers, give me a shout in this thread.



How To Fit Sub To CD400 Head Unit - Lewis6317 - 11:th-Feb-2015

good guide fella If I didn't need to put a double and single buggy in my boot I would have a sup :P


How To Fit Sub To CD400 Head Unit - tucpal - 11:th-Feb-2015

excellent how to there

and very well done i am looking at doing this in the summer so this will be a big help


How To Fit Sub To CD400 Head Unit - Rusty2009 - 11:th-Feb-2015

Nice one mate thanks for taking the time to do it.


How To Fit Sub To CD400 Head Unit - ellz94 - 11:th-Feb-2015

Looks pukka!


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How To Fit Sub To CD400 Head Unit - pope30 - 13:th-Feb-2015

I have been looking at doing this for a while waiting for a guide like this so thanks!!

Bought a cheap sub so I will be installing this over the next couple of days. Would you say standard speaker wire will be ok? http://www.richersounds.com/product/speaker-cables/cambridge-audio/symphony-100/gale-symphony-100 think that's the stuff I have.

I will also be amplifying the standard speakers when I get hold of a cheap decent 4 channel amp.


How To Fit Sub To CD400 Head Unit - TUFFKNUX - 14:th-Feb-2015

pope30 Wrote:I have been looking at doing this for a while waiting for a guide like this so thanks!!

Bought a cheap sub so I will be installing this over the next couple of days. Would you say standard speaker wire will be ok? http://www.richersounds.com/product/speaker-cables/cambridge-audio/symphony-100/gale-symphony-100 think that's the stuff I have.

I will also be amplifying the standard speakers when I get hold of a cheap decent 4 channel amp.

I didn't need any speaker wire for the setup I done.


How To Fit Sub To CD400 Head Unit - pope30 - 14:th-Feb-2015

TUFFKNUX Wrote:I didn't need any speaker wire for the setup I done.

Good point, my subwoofer amp can take speaker wire directly but I have decided to use the convertor and rca cables instead. Nearly all set up but I cant get through the grommet its impossible!!


How To Fit Sub To CD400 Head Unit - TUFFKNUX - 14:th-Feb-2015

pope30 Wrote:Good point, my subwoofer amp can take speaker wire directly but I have decided to use the convertor and rca cables instead. Nearly all set up but I cant get through the grommet its impossible!!

That bit had me swearing. I used a hefty cross headed screwdriver and from the passenger footwear pushed it through and then out the side of the grommet in the engine bay. Be brave and push but watch those wires!


How To Fit Sub To CD400 Head Unit - tucpal - 15:th-Feb-2015

what amp are you using i could do with a few suggestions mid range price wise


How To Fit Sub To CD400 Head Unit - pope30 - 15:th-Feb-2015

tucpal Wrote:what amp are you using i could do with a few suggestions mid range price wise

I didn't want to spend too much money so I have got this http://www.halfords.com/sat-nav-audio/car-audio/sound-systems/edge-edb10-10-v2-active-subwoofer with the intention of upgrading if I like the addition of a sub.

Its actually got really good reviews on both Amazon and Halfords, its a shame that its orange but a can of paint will sort that out. Went for the 10" rather than the 12" because the box was much bigger for the 12".

The sub that I really wanted is this http://www.amazon.co.uk/Pioneer-TS-WX710A-Saving-Amplified-Subwoofer-Black/dp/B00D87P4Z8/ref=sr_1_2?ie=UTF8&qid=1423993392&sr=8-2&keywords=flat+subwoofer but its too much as a tester.

When I amplify the standard speakers I will be using this http://www.ebay.co.uk/itm/SOT-PC000070AA-f-for-Parrot-Evo-Vauxhall-Astra-J-Mk6-/220784384138?pt=UK_Holders_Mounts&hash=item3367c6588a as this will allow me to avoid cutting the wires to the standard head unit. I will use an alpine amp http://www.caraudiocentre.co.uk/product_m-alpine-pmx-f640_p-23894.htm depending on budget. To power the speakers something like this. [ATTACH=CONFIG]366[/ATTACH]


How To Fit Sub To CD400 Head Unit - TUFFKNUX - 15:th-Feb-2015

I had Edge speakers in my old Frontera and they sounded spot on.


How To Fit Sub To CD400 Head Unit - tucpal - 15:th-Feb-2015

There is a plug and play option out there for this but it is a bit pricey
at around the £100 mark from Germany.



They have CD400 and NAV500,600,800 options
and as you can see they come with the speaker wires and just plug and play
and is a better option then splicing the wires into the old connector.


How To Fit Sub To CD400 Head Unit - pope30 - 15:th-Feb-2015

tucpal Wrote:There is a plug and play option out there for this but it is a bit pricey
at around the £100 mark from Germany.



They have CD400 and NAV500,600,800 options
and as you can see they come with the speaker wires and just plug and play.

Have you got a link?


How To Fit Sub To CD400 Head Unit - tucpal - 15:th-Feb-2015

Rusty deals with them.


How To Fit Sub To CD400 Head Unit - DNT - 19:th-Feb-2015

Great how to! So you connected both L and R channels to your sub? Installing an amplifier should be your next how to


How To Fit Sub To CD400 Head Unit - DNT - 17:th-Mar-2015

Here are some pics running power cable to the trunk

http://www.astraforum.fr/index.php/topic,37147.0.html


How To Fit Sub To CD400 Head Unit - Rusty2009 - 17:th-Mar-2015

Thanks for that DNT.


How To Fit Sub To CD400 Head Unit - tucpal - 17:th-Mar-2015

very good i have not seen that way done before and it looks a much better way of doing it


RE: How To Fit Sub To CD400 Head Unit - bhalay207 - 12:th-Apr-2015

At the risk of sounding simple, what's the benefit of installing a sub? I've never fiddled with AV in cars as I've always liked the idea of having a boot.

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RE: How To Fit Sub To CD400 Head Unit - tucpal - 12:th-Apr-2015

just adds alot more bass but it also takes up alot of room


RE: How To Fit Sub To CD400 Head Unit - DNT - 30:th-Apr-2015

Another video showing how to install an amp. Chevy cruze's engine bay and wiring is similar to astra