Add subwoofers in the trunk?

[JShayParlay]

I have a 2013 MKZ w/ the THX sound system.  I have a pair of 12 inch Kickers in a box sitting in my closet.  Should I run power to an amp and install the extra subwoofers?  Will I have to remove the factory subwoofers?  Will it throw the whole system into chaos?  Will the world end? Or will I just merely relieve my 1999 days of bumping around town? 

[17MKZ3.0TT]

On 6/3/2023 at 10:38 AM, JShayParlay said:

I have a 2013 MKZ w/ the THX sound system.  I have a pair of 12 inch Kickers in a box sitting in my closet.  Should I run power to an amp and install the extra subwoofers?  Will I have to remove the factory subwoofers?  Will it throw the whole system into chaos?  Will the world end? Or will I just merely relieve my 1999 days of bumping around town? 

Or, sell them to someone with a $500 Ford Escort/Chevy Escort? You've got a very nice car that according to stats is going to need costly repairs to stay on the road with all it's factory options working. Any pre-repair fund raising would be wiser than optional parts & labor. ? 

[Izzy3906]

On 6/3/2023 at 10:38 AM, JShayParlay said:

I have a 2013 MKZ w/ the THX sound system.  I have a pair of 12 inch Kickers in a box sitting in my closet.  Should I run power to an amp and install the extra subwoofers?  Will I have to remove the factory subwoofers?  Will it throw the whole system into chaos?  Will the world end? Or will I just merely relieve my 1999 days of bumping around town? 

You do not need to remove your factory 6X9 subwoofer just tap in to them to feed the aftermarket amp with a high to low adapter.

[justdgoodz]

@Izzy3906 hey man! How is it going? I remember you from the initial days I was doing Forscan in 2017. Hope all is well.

 

I kind of ignored modding my car (2015 Lincoln MKZ) since 2019, but now I am back on it. 

I am also looking to add my sub, but I read somewhere that the Ford system (Sony) will reduce bass at higher volumes to "save" their speakers.

 

There is a write up on 2gfusion where if you had the Ford Fusion with Sony AMP, there is a AS-Built you can modify in Forscan to get it to output line level on a particular port in the harness. Not sure if this would translate to the THX system.

 

@JShayParlay I think start with what Izzy said. They do say "Ignorance is bliss"

 

@Izzy3906 where did you run the ground wire to in the trunk for your amp?

Edited June 9, 2023 by justdgoodz

[Izzy3906]

12 hours ago, justdgoodz said:

@Izzy3906 hey man! How is it going? I remember you from the initial days I was doing Forscan in 2017. Hope all is well.

 

I kind of ignored modding my car (2015 Lincoln MKZ) since 2019, but now I am back on it. 

I am also looking to add my sub, but I read somewhere that the Ford system (Sony) will reduce bass at higher volumes to "save" their speakers.

 

There is a write up on 2gfusion where if you had the Ford Fusion with Sony AMP, there is a AS-Built you can modify in Forscan to get it to output line level on a particular port in the harness. Not sure if this would translate to the THX system.

 

@JShayParlay I think start with what Izzy said. They do say "Ignorance is bliss"

 

@Izzy3906 where did you run the ground wire to in the trunk for your amp?

I'm doing great hope you are too.

 

For the ground I used the screws from the rear seat seatbelt was the only place I could find.

Not sure for the THX but the basic system it has one amp for the door speakers which does not produce no bass so the speakers will never suffer.

There is a second amp for the 6X9 which has the bass and yes the higher the volume the less bass but if you tap into the ^6X9 for the aftermarket

amp it should produce the bass you looking for.

Edited June 9, 2023 by Izzy3906

[TomV]

You may need to disconnect your factory 6X9 subwoofer, because the subs in the trunk will distort it.

 

I have a sealed subwoofer firing up from under the rear package shelf, between the 6x9 factory subs, so I was able to keep them hooked up.