2015 STI Audio Upgrade how to.
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This is a discussion on 2015 STI Audio Upgrade how to. within the Electronics/Car Audio forums, part of the Interior Mods category; I'd like to upgrade the audio for my STI. I know nothing about upgrading audio whatsoever. Do I need to ...

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    Cee
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    2015 STI Audio Upgrade how to.

    I'd like to upgrade the audio for my STI. I know nothing about upgrading audio whatsoever. Do I need to upgrade the head unit, speakers, or just buy an amp and sub? I'm not sure what the limitation is, I just know its not very loud, and it sounds terrible. Any advice would be awesome! Thanks guys!

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    Pro Manscaper Mikie13's Avatar
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    Listen to your favorite music in your car...the music you know better than anything else. Then figure out what about it doesn't sound right, or sounds like it is lacking in sound. Then figure out how you want to make it sound better...does it need more bass? Does it need improved midrange, etc?

    Usually any weak point in a car is going to be the headunit...incredibly underpowered. If the signal from the brain is bad, then it will just get replicated by speakers, amps, etc. So you have to have a better signal before anything which is why upgrading a head unit is usually one of the best first steps. A lot of the time this can be enough of an upgrade for people since the "ok" speakers are now receiving adequate power. From this point now figure out if you want to start upgrading door speakers and adding amps and a sub.
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    Registered User cflip2x's Avatar
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    If the bbase 2015 stereo is like the previous years I would upgrade the HU first and see if the speakers improve. If they begin to sound better then you may just need to get an sub to fill in the rest.
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    Registered User bullyhatch's Avatar
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    You change your speakers but you won't get the best out of them without an amp or aftermarket head unit.
    If you want to keep your stock head unit and not lose any steering wheel controls, I would recommend buying a CL441dsp by JL audio. It hooks up to your stock radio and cleans up the sound really good. You can also hook up amps to it if you want.
    From the amps you can hook up component speakers in the front and coaxial speakers in the back doors. You can also hook up another amp for a sub.

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    Cee
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    Is it typically a few month wait before a head unit + harness comes out which supports full steering wheel functions? I've never even looked to replace one in my car before.

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    Registered User gizmo0034's Avatar
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    Quote Originally Posted by Cee View Post
    Is it typically a few month wait before a head unit + harness comes out which supports full steering wheel functions? I've never even looked to replace one in my car before.
    There's already a harness and steering wheel adaptor that you can use with an aftermarket HU. It retains all steering wheel functions.

    Parts Needed To Install Aftermarket Head Unit In Subaru Impreza/WRX/STI/Forester/Crosstrek

    I just purchased my 20-pin harness from SVXdc, I know a few other people have already done this install on the 2015 wrx/sti.

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    I have a 2015 STI with the Harmon Kardon audio system. I just upgraded the head unit to the current pioneer AVIC 6000NEX. With an idata maestro to retain the steering wheel controls. There are a couple of videos showing how to remove the dash panel. After that it's mostly just a few bolts and everything else is plug and play. I did take mine to an instal shop.... Reasonable price and it took less than an hour. Even with the stock speakers and amps it sounds great.

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    Do you have siri xm radio with this unit? the Avic 6000NEX? Also can you post a picture of how it looks in the dash?

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    Cee, dumb question if you already know but do you know there are secret menus on the head unit to make it a little bit louder. It isn't great but helps. https://youtu.be/X3wD-jHTN0E

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    Don't change the head unit, it's fine. Set it in "Through Mode" and the signal is fine. The problem is that it's INCREDIBLY underpowered. Adding an amp is better for a few reasons. 1. you're going to do it anyway, 2. you get to keep all of your OEM functionality and it's integration, and 3. no one will want to steal it.

    Now, if you want to add functions like navi or a DVD player, then by all means, replace the radio. But don't do it because you think it'll sound any better. Until you run out of power the OEM radio actually sounds pretty good. Also, the enhancements and adjustments built into the OEM radio work very well. If I didn't want the ability to watch a movie in the car, I'd leave it in. There's no other reason to change it, IMO.

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    Quote Originally Posted by withoutt View Post
    Do you have siri xm radio with this unit? the Avic 6000NEX? Also can you post a picture of how it looks in the dash?
    Sorry for the delayed response. I do not have xm radio, but only because I don't use it.... The head unit does support it. I do use Apple car play and it works quite well. These are the images of the unit installed. I downloaded the splash screen and background and installed via the USB port.
    Attached Thumbnails Attached Thumbnails image_1434160174968.jpg   image_1434160203565.jpg   image_1434160224025.jpg   image_1435514081454.jpg   image_1435514102598.jpg  

    Last edited by Cage1975; 06-28-2015 at 10:55 AM.

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