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i actually dont mind the stock system on the k5 gt line!. i know its not upgraded bose but bose is just a consumer brand anyway and not an upscale audio company any way. Very highly over rated audio name.
 

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I went to a car audio place and asked about getting the speakers changed out to get a bit better bass out of the stereo and the dealer told me he didn't think that it would help at all and of course then tried to sell me a $459 sub that sits in the trunk in the spare tire well. Uh..no. Has anyone changed out just the stock speakers and seen a difference?
 

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2021 Kia K5 EX
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I went to a car audio place and asked about getting the speakers changed out to get a bit better bass out of the stereo and the dealer told me he didn't think that it would help at all and of course then tried to sell me a $459 sub that sits in the trunk in the spare tire well. Uh..no. Has anyone changed out just the stock speakers and seen a difference?
Very curious about this. I have plans to upgrade the stock system (EX) because to me it's pretty garbage. I mean, my Honda Civic sounded better...
 

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2021 Kia K5 GT-Line
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Very curious about this. I have plans to upgrade the stock system (EX) because to me it's pretty garbage. I mean, my Honda Civic sounded better...
I too have been looking to upgrade my 2021 Kia K5 GT-Line sound system. The stock (non-Bose) system has clear highs, but at any volume level the mids lack depth and there is no bass fill or punchy bass. On this forum as well as searching Crutchfield and reading 15-20 reviews of various 6.5 and 6 3/4 inch component speaker reviews, nothing is wowing me to do an install. I haven't found a speaker review that is consistently good for a factory replacement (without an external amp), the only thing I could find was HOW to install the door speakers
but even then, this guy doesn't comment on how they sound (ugh!). If I find anything that sticks out to me or something I am considering going with, I will be sure to check back in here and share some knowledge. Lastly, I cannot find any info anywhere that has the factory speaker and head unit specs, nor any other recommendations from experience and there is a thread in this forum of some pretty experienced folks trying hard to dig up info for us. Hang in there, something is bound to give!
 

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I too have been looking to upgrade my 2021 Kia K5 GT-Line sound system. The stock (non-Bose) system has clear highs, but at any volume level the mids lack depth and there is no bass fill or punchy bass. On this forum as well as searching Crutchfield and reading 15-20 reviews of various 6.5 and 6 3/4 inch component speaker reviews, nothing is wowing me to do an install. I haven't found a speaker review that is consistently good for a factory replacement (without an external amp), the only thing I could find was HOW to install the door speakers
but even then, this guy doesn't comment on how they sound (ugh!). If I find anything that sticks out to me or something I am considering going with, I will be sure to check back in here and share some knowledge. Lastly, I cannot find any info anywhere that has the factory speaker and head unit specs, nor any other recommendations from experience and there is a thread in this forum of some pretty experienced folks trying hard to dig up info for us. Hang in there, something is bound to give!
Thanks for video link. I will be replacing my stock speakers probably some time in the next week or two. I've seen very good reviews for the Infinity Reference 6532ex and 6532ix for 4 ohm systems without an amp which is what I will likely get. They're about $60 per pair on Amazon. Crutchfield has them at $99 though you do get the mounting brackets ($20/pair) and wire harness ($10/pair) for free which for all 4 speakers is worth $60 according to their site. So basically I could pay $200 through Crutchfield alone or $180 with Amazon for just the speakers and Crutchfield for the hardware.

Edit: these went on sale on Crutchfield so I paid $150 for everything Infinity Reference REF-6532IX Reference Series 6-1/2" 2-way car speakers at Crutchfield

I went for the ix as their frequency response is slightly better, also they have angled tweeters and a button to toggle up to +3dB of treble. Will post with an update.
 

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2021 Kia K5 GT-Line AWD
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702 Posts
If you could, maybe have a video of what it sounds like before then after install? Sometimes it's hard to judge them with only an after install vid, especially depending on what you use to record with. lol Would be good to have a base line of what it sounds like with your recording set up, then the Infinity speakers with the same recording set up.
 

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2021 K5 GT-Line Wolf Grey
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If you could, maybe have a video of what it sounds like before then after install? Sometimes it's hard to judge them with only an after install vid, especially depending on what you use to record with. lol Would be good to have a base line of what it sounds like with your recording set up, then the Infinity speakers with the same recording set up.
That’s not really going to be much help since the quality of the sound in the video will be almost entirely dependent on the speakers on your computer or phone that you watch the video on.
 

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2021 Kia K5 GT-Line AWD
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That’s not really going to be much help since the quality of the sound in the video will be almost entirely dependent on the speakers on your computer or phone that you watch the video on.
True, but at least you have a base line comparison between the two. Obviously, it's not the same as comparing it in person but it's good to know what it is comparing against using the same equipment, especially with so many other variables in between, like sound quality of hosting sites and how the compression algorithm make something sound worse than they are.
 

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2021 Kia K5 GT line Wolf Gray/Red
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I went to a car audio place and asked about getting the speakers changed out to get a bit better bass out of the stereo and the dealer told me he didn't think that it would help at all and of course then tried to sell me a $459 sub that sits in the trunk in the spare tire well. Uh..no. Has anyone changed out just the stock speakers and seen a difference?
Yes I have changed out stock speakers with infinity 6.5 speakers from crutchfield they supplied everything I needed did install in 2.5 hrs for all 4 speakers much better sound than factory and well worth $200
 

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2021 Kia K5 EX
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Yes I have changed out stock speakers with infinity 6.5 speakers from crutchfield they supplied everything I needed did install in 2.5 hrs for all 4 speakers much better sound than factory and well worth $200
Hey thanks for the update on this! Can you give a little feedback on what the process was like? I've never done anything like this to a car so I'm trying to figure out if this is something I can do on my own. What was the labor like and what types of tools did you need? Are you relatively comfortable with these kinds of upgrades or was it a newer experience for you?
 

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2021 Kia K5 GT line Wolf Gray/Red
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Hey thanks for the update on this! Can you give a little feedback on what the process was like? I've never done anything like this to a car so I'm trying to figure out if this is something I can do on my own. What was the labor like and what types of tools did you need? Are you relatively comfortable with these kinds of upgrades or was it a newer experience for you?
So I never did speakers before but watched video on YouTube looked like I could do it purchased plastic trim removal tools on eBay about $7 they are blue in color panels are kind of hard to get off but if you work from bottom vent hole in panel work your way to clip then put other tool on the other side of clip and pry on both sides it will pop then move on till the next be patient they will come out when you loosen about half of them you can use your hands to pop the rest of them every thing else was really easy
 

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2022 K5 GTLine AWD
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Yes I have changed out stock speakers with infinity 6.5 speakers from crutchfield they supplied everything I needed did install in 2.5 hrs for all 4 speakers much better sound than factory and well worth $200
How are the lows...the highs and mids on our non bose system aren't terrible for factory..but there is almost no bass response. I'm not looking to shake my mirrors I just want full sound.
 

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2021 Kia K5 GT line Wolf Gray/Red
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How are the lows...the highs and mids on our non bose system aren't terrible for factory..but there is almost no bass response. I'm not looking to shake my mirrors I just want full sound.
Much better sound in all aspects but remember you are only installing four 6 1/2 speakers so if you really need a kick in base you need an amp and 8 to 10 inch woofer you will still be running stock head with out high output but well worth the improvement.
 

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2021 Kia K5 GT line Wolf Gray/Red
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Much better sound in all aspects but remember you are only installing four 6 1/2 speakers so if you really need a kick in base you need an amp and 8 to 10 inch woofer you will still be running stock head with out high output but well worth the improvement.
Also I used Infinity Primus speakers which react well to not a lot of amperage
 

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2022 K5 GTLine AWD
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Also I used Infinity Primus speakers which react well to not a lot of amperage
This is helpful :) - I'm not looking to bump.. just have a more even sound. I've found rock or lots of pre-200's stuff sounds pretty flat.. pop and rap sound 'passable' for factory...
 
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