Ford Focus Subwoofer Specs and Replacement Options 

Very good videos on upgrading the entire soundsystem. Thank you for going through all the bullshit so the rest of us don't have to. Thanks for all the information and research you did.

Thanks for the vid. The "upgraded" stereo was fine for a few months, but now I need to upgrade. Found your video on my search. Saves me a lot of searching. I'll watch your other videos before asking questions (you might have answered them already).

Second vid of yours I've checked out. Well Done. Finally found someone who speaks,my language. This August I'm ordering my 2017 st. Yeah,I'll be sure to bring the sound issue to front. Thx for your helpful vids. Semper Fi

That sub was one of the first things to go in my 15 focus titanium. It’s better than nothing, but it can’t touch my sundowns. 🤣 Side note, dude. You’ve gotta be from Michigan. I’m guessing southern (Detroit area.) your accent makes me miss home!!

2018 titanium Ford Focus sounds amazing btw

I saw your video at the right time. I want to upgrade that sub so bad. I have a Cerwin vega stroker 12 with a 2500W Rokford amp. I know it might be over kill but I like to turn it up when I want to. Anyways you should make a video on the installation. I know a little bit about wiring but I have never messed with a car with a factory sub. Awesome video by the way.

I have it bolted to the steel on the wheel well. so no you cant really get to the tire without unscrewing the sub, and then the box. You can mount it to what ever makes it easy for you.

So i have my 2012 titanium hatchback and my option was a skar (cant remember the exact one but it was a 500 watt speaker and not only did the stocks push it perfectly but it made it sound nice and crisp and i doubt the have this deal anymore (or maybe they do) i was able to get it all the door speakers and tweeters replaced except for the ones in the dash

Love the sony "upgrade" upgraded videos man. One day I'll get the funds and the stones to do something similar. The day after I bought the focus was the day I realized the speakers were shit. Keep it up dude

good video man, just looking at that thing i thought that cannot sound the way i want.

thanks alot, i have worked with relays before it will work , im not using a lc2i but i have something similar , im now contemplating throwing out the gear i was gonna use and getting new stuff i like what you did run to the amp and boost entire car , i just wanted to add an amp , but now i think major surgery is gonna happen

Lol...love this fucking video......I don't even own a Ford Focus st....

If you think this radio sucks try the se stock radio with sync. The sound midranges out at 3/4 volume. I am trying to get a stock sony audio head unit to plug into my se. ( in other countries there is a sony radio with a small screen like mine) Why in America do we get this lousy single tiny volume knob radio? The plugs on the sony audio mod. are the same!

Know the ohm rating on the speaker? And perhaps how much output the factory amplifier could provide? I'm willing to take the risk of getting just a replacement shallow mount sub and put it in the tiny stock box (probably fill the enclosure with poly-fil as well).

You've probably already had someone say something by now, but you could use poly-fill in that box to compensate or its lack of cu in's. From there you could easily do the other subwoofer you were talking a bout provided mounting depth was correct, and you could plug that back hole from the other sub.

Meanwhile i got 2 12" L7 solo baric in a pro box. freakin awesome

I have a 2013 Ford Focus SE. What do you think the best option is for a subwoofer and box? I want bang for my buck.

It isnt as major of a surgury as you think it is. I will be making an installation guide starting this weekend.

your welcome... I just want to save people from having a headache and wasting money on shit that is useless! :)

I don't, you would have to think of a different mounting method if you want to be able to access your spare tire. No big deal for me though, I just carry a drill with a fresh battery when i go on long trips.

Thanks for the videos, Jason. My question is how much mounting depth is available in the stock sub box? Thanks.

How do you get your spare tire out?

they make is to you can't take out the SE radio to upgrade... I got the Titanium just to get the LCD screen and tweeter locations cut out.

If you want to get more airflow in the trunk cut a 10 inch hole in the box and put the other sub in the box but dont hook it up both will sink and pound

The box and sub are POS. How does the Sony amp do with a good fosgate dvc 8” 2ohm per coil, in a bit larger enclosure? The 8 I’m think of using just needs .75cuft. I’m building the box if you think the amp is decent enough to push it.

which wires did you tap for the line out converter ? do u think I could just plug the wires coming into the stock sub into a hi level input on an amp ?

Thanks for the info, ill just get the ST1 screw spending more on the st2-3 ? i can upgrade the radio/ speakers later.

Hey, I just installed the Sony sub in a non Sony Focus and was wondering how much power you got out of it? I haven't set levels yet, so it's well within the safe zone. Was just looking to maximize what I had and if there's a lot of headroom I might throw in some polyfill. Not looking for SPL, more so doing a SQ build on a budget.

hey what year is your focus , i have a 2012 with sync and im trying to figure out how to add a sub and amp to my sync setup without having to replace the front parts. ive looked at the harness behind the radio and i know where the speaker wires are at but other than that i cant find anything useful to use for remote + to turn the amp on or off , shoot me a pm please

Thanks for the video Jason. I already upgraded the 4 doors speakers to Infinitys, but still would like a clearer bass.What do you think of adding the Kicker 40CWRT82 CompRT sub to the stock enclosure, but using a 1" MDF spacer, and filling it with Polyfill, that should make it sound quite more decent yes? As for the subwoofer wiring, since there are connectors on both sides, will it make a difference which pair of wires goes on which side?Thanks

You wouldnt happen to have a wiring diagram of the wires going to the factory amp would you? Would like to use those but nobody can give me a diagram

Looks like the minimum for the Kicker Comp RT is 5.66L/0.2 cu/ft. Would the sound be worth the cost of just swapping one in? Can I do it without much other modification?

Hey Jason, would the stock amp be suitable for the Infinity Reference 860W?

Thanks for the informative video

What about porting the stock box to allow for a upgraded 8 inch sub to be used in it? Could that not be a simple solution if your not wanting to lose any trunk space? I personally don't want to lose the space and I imagine needing to get to the spare tire is a bit more of a pain in the ass now if you get a flat.

I used to think stereos were awesome when I was a kid. FYI to anyone...you wanna lose car weight NOT ADD. So yeah u may thump..but this is a sports sedan the more weight u add the slower ur times will be off the line. Depending on area you live in cops are an issue as well. Its a reason to stop u nice setup tho!

Good video and helpful. What is the stock size woofer that comes in the car. I bought my son 2004 Focus zx3 Roush. Great car for his first car. Had a new radio installed last week and now noticed we are getting a feed back noise from the stock woofer. Any ideas? I thought the woofer sounded bad before we put the radio in. Might replace it with something that just fits the stock box for now.

I am upgrading everything in my 2012 Focus Titanium. I am going to try to look for a 5 channel amp, like you did, that works with my sub (Skar Audio VVX-8v3) and component speakers (Infinity Reference 6500CX). I am trying to learn as much about what to do as possible before I start taking apart my car. I'm not entirely sure what to do about the MyTouch radio. I'm assuming that I am disconnecting everything that goes to the Sony amp and speakers and getting the audio line from the MyTouch to my amp. Also I'm guessing that I will be running my own power wires to the tweeters and woofers from my amp. Sorry for the uncertainty by the way i'm trying to do this without a family member that has helped me with car audio in the past because they are not too good with car audio in newer cars because it is a lot less straight forward. Please, if you could I would appreciate any info on what I will need to do to the MyTouch to get audio the signal to my amp or any more info that I don't know about that you think I should know. Thank you!

The casual roasting is just 🤌 Was on the fence about a box but this swayed me, thx.

I'm wanting to replace my factory sub in my 2014 focus. I got a 10" 1100watt pioneer. I'm not sure how to install it . I'm not experienced in that field but would like any advice that somebody can give me.

there is no remote wire anymore. all new cars come with a data line that turns everything on when it sees data flowing. thats a 5V line and it is useless. you will have to run a relay off the ignition and use the battery as your source. sourry for the bad news. other than that, you will need to tap into the front speakers and then send that signal to the LC2i for conversion into RCA's.

driverside, underhood, behind the airbox.

honestly brother good choice my neighbor gave me one of these single dual voice coil Sony Subs each coil is rated for 45 Watts RMS what is a joke the reason why he gave it to me is the sub box got broke so I'm sitting here with this sub not knowing what to do with it I might just give it to a neighbor kid or something it is a piece of shit killer choice you killed it with the slot ported box design I bet you it sounds phenomenal

The comp.rt requires .2 in a sealed.

Hey bro what color wires you used from the factory amp to the LOC??? keep up the good work.

trust me, you wont need more than a single 10" in a ported box. I would not waste my storage space like that. where do you live? just check the wires from the ignition. find the wire that goes hot when you turn the key to ACC. then use that to activate your relay. then use the other side of the relay with a source from the fusebox or battery to go to your amp.

Is it possible to connect a different subwoofer with the stock amp the car has. I have a Sony xplod 1200w? Thanks

Can we drill the box and "port" it and add some poly fill?

I have a Sony audio in my focus and want to change the amo but do not have the wiring diagram. Do you happen to have the wiring diagram for the amo by any chance?

Do you happen to know the specs of the subwoofer and the amp. RMS, ohms.....

I traded in a car that had a Pioneer head unit (50w x4) and 4 Pioneer speakers, I loved the sound and never wanted a sub woofer (I've had thumps in the past). However, my new 2015 Focus car audio is mostly flat (no matter the adjustments). I do not want to change the head unit if I do not have to. I just want the same that I had with the Pioneer bouncy-spongy PERCUSSION! Would buying all new speakers do the trick and/or do I need a fucking amp to be wired up?

Hey Jason thanks for the informative videos! I just got a 2015 ford focus st, pretty awesome car but disappointed in their attempt at an "upgraded" stereo system so I am thinking of doing my own upgrades but I don't know shit about installing audio equipment. Which do you think is most critical for getting an appreciable audio improvement door speakers, tweeters, sub or amp? My initial thoughts were the subwoofer. If you upgrade the sub to say that expensive JL audio stealthbox would I need to get a second amp? upgrade the current amp to something delivering more power? I am super nervous about messing with the amp cause it seems like a lot of the car's other high tech electronics could be rigged through it. I have other questions but this is already a lot. Appreciate the assistance bud!!

Are you still running the factory head unit? I got the ST3 package and need to upgrade all my audio but I like the touch screen in it.

Do you think cutting a small port in the shitty stock box would help at all? I dont want to take up any space in my trunk and am looking for solutions to maybe replace the woofer and modify the stock box?

do you know if they have upgraded the premium sound system on the mk3 focus st3 2015

yo brother with my 16 st I'm going to do a free air kicker 12'' and a alpine v500 5 channel amp polk audio 6.5 in doors my plan is to mount a piece of plywood sprayed black in truck from end to end.. about 15'' wide .. mount the amp and kicker cone facing down directly on it with no box ... what you think ?

If you haven't seen anything like that since the early 90s, you obviously don't install for a living...

I've got the Ford Focus electric, which has the sony system without a subwoofer, because the battery goes where the subwoofer would go. When I play rock is sounds like garbage. What do you recommend?

Does this Sub actually works when using the audio in sync..? or there is a route in the screen to activate it..?I bought a Focus recently and it does not soundThanks

How difficult is it getting to the spare tire with the new box clamped down?

I'll never get this 6:36 of my life back. Couldn't even finish it.

Hello I have a focus st as well but I was wondering about how much on parts did you spend on the stereo upgrade that you did. Pm about it please

I'm trying to buy a second 8 inch sub for my focus but I don't want it to sound uneven so what kind should I get that is equal sound to the stock sub?

Hey man, been watching your videos lately as I'm wanting to put a subwoofer in my car. 2012 titanium with 'premium' 10 speaker. Would it work to leave the stock amp in the car to power the cabin speakers and then wire in another amp using an lc2 to power an aftermarket sub? If something like this would be possible to your knowledge, would you be able to point me in the right direction to start? Thanks!

Thank you for this video dude, now I know not to fuck with it cuz it will use up much space

Thanks a lot man...

i would gladly like to buy the woover off of you if you still have it. and im curious what kind of amp would i need to get to get this working. i saw this woover and the stock amp at the dealer ship but i know nothing about all this

is the sony sub still for sale?

Does anyone know how to turn on the built in subwoofer on the ford st

Please do id like to see what you did for the relay , I decided to start from scratch instead of using my old woofer I'm going to buy all new parts there is a video of a dual box in a 2012 sedan that I really like I'm going to try to get someone to make me a duplicate woofer box

Hey man I was wondering what the wire & color was that you found that could be used for a possible remote wire for an Amp? Thanks :)

No sé si ya lo venderías pero a mí me interesa mucho el subwoofer no tengo mucho dinero pero si me gustaría tenerlo soy de Honduras

kinda late here - do you can you just replace the sub with another one without other mods? i have a decent 8 inch sub that will fit in the box - im worried b/c of the 4 wires on the sony vs the 2 rca wires on the 'new' sub... i dont need much bump - i just want a little better and i already have the sub sitting in the garage - a friend gave it to me b/c he didnt want to deal with selling it

Did you sell the original subwoofer? If you haven't I will buy it.

Hi jason iv got an st2 in the uk Do you know if there are any subs built to go where the spare wheel goes for the mk3 please?

i like the box by soundoffaudio cant post link YT being gay but will customize it that ones a lil too small, im going to make a new parts list and buy the stuff end of next month

Where did you get your remote signal for the amp?

Bro, I work at The Ford plant in Ontario (OAC) I just picked up the ST and I agree, ah lot of people thinks the upgraded system is a kick ass system.....man, I fucking hate this system more than my X-fucking-wife!!!! what a piece of shit. Again bro, many thanks. I will be doing my system pretty soon, thanks for your help.

where did u find that woofer?under the seat?

The stereo in my fiesta st is horrible I hate it and my sun roof has leaked since day one and getting ford to fix anything has been a nightmare

good info thanks

putting an amp on my se radio would suck. When you amplify garbage you get bigger garbage.

No different with the sel Sony system it sucks too Ford should of got Alpine

I guess I can calm down a bit. But it is disgusting that companies spend money on R&D and then they botch up the results so badly. I work in R&D and it makes me sick that they don't use any kind of brains when deciding to go with a design.

where can i buy the factory sub box for an 05 focus st

Thanks!

i have a 2006 ford focus. looking to upgrade the stock sub, and im imagining its not much different than yours...? or don't you know...

where is that bolted? can u get it out easy and get into the spare?

Where did you run your power cable?

Personally don’t think it sounds that bad !! To be honest I turn the system down and just listen to the engine.. sounds way better then any music

I hope what ever you are using is powered. Please do not use one of the cheap models that just has inputs and rca outputs. if you dont put power and ground to the unit, just dont use it. YOU WONT BE HAPPY. at least i wouldnt be...

Just got my 2013 PB ST3. I'm tempted to do a new Ipad mini with retina upgrade. I also made a one off all fiberglass custom box for my old hatchback. I may be doing the same here. Are you a member of any of the ST forums?

One more thing can you show us the wiring when you install the sub?? Video or diagram Please!!! thank you !!!

TS-SW2002 would be a perfect fit maybe?

How many Watts is the stock amp?

This driver bothers me a lot less than door speakers in the SE. Never seen plastic frames before -- I have now!

Pretty sure the stock sub sounds good enough . It’s just as much base as the explorer platinum system . Now if your ghetto and want a shit ton of bass to annoy the fuck out of most people then yea I guess u have to upgrade . But my focus is my work car and audio sounds good . I’m also worth north of a few million and again the focus has good enough audio for mature people .

Reminds me of bully on back 2 the future lol

Holy shit you look like farva from supertroopers without the Stache

I want HD radio. So that would not work. The head unit adapters out there are junk. (tried them both)