2013 Si Sedan Rear Deck Install

iShift_6

iShift_6

Well-Known Member
91
160
Sitting in Traffic
Vehicle Model
Civic Si
Body Style
Sedan
So a few weeks back I added a Soundstream Picasso Nano 5 channel amp. It fit nicely under the passenger side seat with a custom bracket, and crazy custom wiring harness. Long story short it was over driving the stock speakers, in particular the sub. And yes I know I could have just backed the gains down, but what fun is that. So I decided to upgrade the sub and the rest of the speakers. (I know most audio heads will dislike what I did, but it works for me.)

Anyway I went with a Kicker setup, typical 6.5" speakers in the front and rear deck, and an 8" Kicker sub. No photos of the front setup as mostly everyone knows what that looks like. But attached are the rear deck photos with the 8" sub installed in the stock sub location.

The sub is a free air sub, and adds more than enough bass for my liking. While it is not the tightest bass, it is by no means sloppy. My biggest problem now is something is rattling when the sub hits at certain frequencies. Not sure how to fix it, thinking dynamite of some form. Anyone with some experience feel free to chime in and let me know of a good way to quiet it down.

Anyway just thought I would share my setup...

IMG_6546.jpg Stock Deck...

IMG_6552.jpg Kicker Deck...

Different view...

IMG_6547.jpg IMG_6553.jpg
 
I've seen several ppl put sound deadening material in sections around the back dash after they swap out the factory speakers. Haven't heard any of them complain about any rattling. Just a thought. I'll be doing the same thing in a few months.
 
Looks really good...an upgrade I will look into more a little way down the road. I am curious as to what the radio looks like in the back, does it have a spot for a remote wire on the stock harness? The reason I haven't done it is because I am worried the stock harness wont have everything I need to power the speakers, and I dont want to do aftermarket because of the loss of I-mid integration
 
Yeah, a box (or an enclosure underneath) would be far more ideal for the sub. Obviously you know that though.

Dynamat (plenty of materials like it as well that are cheaper) is definitely a must for that deck. Frankly try and cover as much of the trunk as you can afford. It'll help tons with that "boomy" bass.

It wouldn't surprise me if that midwoofer mount was rattling considering it wasn't designed for sub with that kind of power.

Dennis Rockholt said:
Looks really good...an upgrade I will look into more a little way down the road. I am curious as to what the radio looks like in the back, does it have a spot for a remote wire on the stock harness? The reason I haven't done it is because I am worried the stock harness wont have everything I need to power the speakers, and I dont want to do aftermarket because of the loss of I-mid integration
Click to expand...

The 13's actually have their amp separate from the radio under the steering wheel. This means there is a remote turn-on wire for that amp (and everything you need to redo the system). It also means it's kind of a ***** to mess with the harness, but that's another matter...
 
BWill9886 said:
Yeah, a box (or an enclosure underneath) would be far more ideal for the sub. Obviously you know that though.

Dynamat (plenty of materials like it as well that are cheaper) is definitely a must for that deck. Frankly try and cover as much of the trunk as you can afford. It'll help tons with that "boomy" bass.

It wouldn't surprise me if that midwoofer mount was rattling considering it wasn't designed for sub with that kind of power.



The 13's actually have their amp separate from the radio under the steering wheel. This means there is a remote turn-on wire for that amp (and everything you need to redo the system). It also means it's kind of a ***** to mess with the harness, but that's another matter...
Click to expand...

Got it...for some reason no harness has been created, but I really want better speakers and a better sub in the rear (which is where the sound lacks most imo) I will have to look into it, thanks for the info man
 
Dennis Rockholt said:
Got it...for some reason no harness has been created, but I really want better speakers and a better sub in the rear (which is where the sound lacks most imo) I will have to look into it, thanks for the info man
Click to expand...

Basically everyone I know of has just kept the stock radio and hacked into the harness for the speaker inputs (if you are referring to a harness for an aftermarket headunit).

Easy, but awkward due to being under the dash.
 
So after much poking around I finally figured out the source of all the rattling.

The rear deck plastic cover. The whole time I thought it was the sheet metal around the sub causing the issue, but no.
So a strip of foam tape across the back to keep it from rattling on the rear window, and some time on the lathe at work.
I ended up with this as solution to hold the deck more firmly in place.

IMG_6562.jpg

I replaced 4 of the 6 clips on the cover with those, the two front ones by the sub are obstructed from the underside.
These secure it so much better than the plastic clips ever could. The sub now sounds awesome, well at least to this non-audio head.

If there wasn't so much custom work involved (dremel work on the rear deck, custom clips and adapter for the speaker mounting hole patterns),
I would recommend this to anyone looking for more bass. HA

I will admit it helps to have cool "toys" at work to do all of this with. Lathe, water jet, cnc mill, press brake, and a boss who lets me use all of it for personal stuff during slow times.:)
 
How hard was it to access the speakers in the rear deck? More specifically, what did you do to properly remove the plastic cover in the rear?

Side note, do you have any pictures of the underside of the rear deck from the trunk? Curious to see how deep the new sub protrudes into the cargo area in the trunk.
 
Removing the rear cover is fairly easy. I think I found the guide on how to do it on here somewhere.

Basically you have to remove the C pillar trim, 2 clips and one other type of catch. That one is a real pain to get removed.
Just be careful as there are airbags back there. It's not a bad idea to disconnect the battery.
Once that's done, then you can just start to push up on the rear deck over, with the seats folded down.
The cover itself is held on by 6 clips, and the "hooks" on the lower part of the panel that is behind the seats.
Start pushing up on the panel from the part that is beneath the seats, and it should start to lift up.
Once they are popped the panel simply lifts off.

I do not have any picture of the underside, but will take one today since it will be nice out. I'll update later today.
 
Underside photos as requested.
Not the best but I think it shows that it really doesn't take up that much more room than the stock one.
And yes I know I need to secure the wires better, had them loosened up to work on it a week or so ago.
Just haven't gotten around to cleaning it up again.

IMG_6577.jpg



IMG_6581.jpg
 
iShift_6 said:
Removing the rear cover is fairly easy. I think I found the guide on how to do it on here somewhere.

Basically you have to remove the C pillar trim, 2 clips and one other type of catch. That one is a real pain to get removed.
Just be careful as there are airbags back there. It's not a bad idea to disconnect the battery.
Once that's done, then you can just start to push up on the rear deck over, with the seats folded down.
The cover itself is held on by 6 clips, and the "hooks" on the lower part of the panel that is behind the seats.
Start pushing up on the panel from the part that is beneath the seats, and it should start to lift up.
Once they are popped the panel simply lifts off.

I do not have any picture of the underside, but will take one today since it will be nice out. I'll update later today.
Click to expand...

Did the rear deck cover fit back over the new speakers or did it have to be modified?
 
@philipj1965 - yup the cover fit just fine. As I noted above the additional sub made the deck rattle, so the custom clips helped, but not required.
In the end it took some additional foam along the rear of the deck to silence it properly.
 
You must log in or register to reply here.
Back
Top