Convertible - 200a rear speaker replacement

The rear speakers in my 2016 Ecoboost convertible are not very good sound quality, so I thought I would replace. I was surprised at how low-end they appear to be. Thinking they were 2 ohms, I purchased JBL GTO638s to replace, however it turns out that they are 4 ohms. While I have the rear speakers exposed, I'll add some speaker wire to them, to eventually feed signal to a subwoofer in the trunk.

So how does it sound now? Thinking of doing the same. What radio do you have?

MX5Racer said:

So how does it sound now? Thinking of doing the same. What radio do you have?

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Replacing the rear speakers, the overall improvement was minimal. I was a little disappointed but it was ok because I needed to get into there anyway to run some feed wires to the trunk for when I eventually put in a subwoofer. However, last night I replaced the tweeters in the a-pillars with Kicker KST25 tweeters. The difference of that change-out is huge! Sounds so much better upfront - nice crisp highs but not tinny sounding. The rear speakers are just "fill" anyway. My head unit is the stock one with the 200a package. So I would say start with those tweeters. Once I get some decent bass with a subwoofer in the trunk (not thumping bass but just to round out a nice full sound), I think I will be very happy with the sound.

Any idea what you are going to do for a sub? I just picked up my GT vert and I can't believe how bad the base Shaker is! I can't find a pre-fab enclosure for the convertibles. Thinking of either building one or doing a tube. Just not sure which yet. I think I'm going to do cabin speakers first and then the sub.

I will be building my own sub, located where the stock one would sit.

I stumbled onto this the other day. Not sure if it impedes access to the inflator or not. I was considering building one just like it.

http://www.ebay.com/itm/262644726487?_trksid=p2055119.m1438.l2649&ssPageName=STRK:MEBIDX:IT

That's an interesting option too. I have been wondering how much sound you will get up front with the roof down, this might be better as its closer to the passengers?

bboshart said:

That's an interesting option too. I have been wondering how much sound you will get up front with the roof down, this might be better as its closer to the passengers?

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Not sure, just fired an email off to the guy trying to get a messurement from the box to the edge of the trunk. I don't think the sound to the passengers would be much different since both are just firing into the void of the truck. They have a ported version too.

Wasn't sure where to post this question. Searched the forums for info and hobbled this together.
I would like to add a sub to my system. Have the Shaker, but no the Pro. So no sub - system has NO bass.
I was hoping that someone who has expertise can tell me if I am on the right track - and where I am off track.
I have an older amp that I would like to use. It worked well in the past and using it will save some cash (Sony XPlode).
I would like to put a box in the space where the OEM box would be. I do not have a box yet, but will find one that fits nicely or build it if necessary.

1. I should disable the mics for noise cancellation. Convertible, so one in each rear quarter and one in the map light area.
2. I can put the ground for the amp in the trunk area. Attach to body.
3. I should run a power line directly to the battery. (Or, is there an existing power source in the trunk that I can use? Is power already there for an OEM box? This would be convenient.)
4. There is a wire in the harness in the trunk that I can tap for the remote turn on. Found this in another post.
5. My amp has high level inputs. I should tap into the rear speakers - both L and R to get the high level inputs.
6. My amp does not have a single out for a sub, but the directions state that I can wire both the L and R outputs together and hook them to the sub that way. Is this okay?

Trying to keep this as simple and cost efficient as possible.

All help is appreciated!