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Old 01-27-2020, 05:54 PM   #1
IWrxAlot
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Default Need help installing kicker key amp 2019 wrx base

I recently bought a kicker key 180.4. I read that these are supposed to work great with the stock hu. The only problem is that I have no idea how to install one of these. The instructions are confusing and not very descriptive. Iíve installed plenty of ďnormalĒ amps. By normal I mean a sub in the trunk with a power, ground, remote turn on, and using a line output converter. Iím pretty good with wiring I just need some direction because I canít find any videos of someone installing one of these in a wrx.

A few of my main questions:
-Do I need to run a dedicated power and ground for an amp this small, or can I use the power from the factory harness?

-Do I need to run a remote turn on for this amp? It mentions that is uses the sound signal to sense when to turn on and off, does this work okay?

-How would I go about getting the stock tweeters to be amplified? Are they just spliced off of the door speakers?

-If I wanted to add a sub, could I use a line output converter and run a separate amp for that sub? I have 2 punch 12Ēs and a 1200 watt amp.

Obviously this isnít going to give me professional grade audio. Iím just looking for something thatís louder with more bass than stock. Because the base sound system is absolutely terrible. I can turn it all the way up and have a normal conversation with the person next to me.

2019 Subaru Wrx Base
Stock door speaker and tweeters
Stock Hu
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Old 01-29-2020, 11:21 PM   #2
AZ-GT
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2000 Impreza 2.5RS

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Check out Five Star Car Audio on You Tube. They have several install videos on the Kicker Key.
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Old 01-30-2020, 11:04 AM   #3
Subydude81
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2007 Lexus IS250 RWD
6MT

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I’ve ran multiple set ups in my 18” STI I can tell you get a active line out converter first. Your gonna want more bass because the rear speakers do not play a full range signal. Audiocontrol LC7i is a good choice. You can find them used for like $100 and will give you 3 sets of RCA outputs.

The remote sense on your amp will work.
The front tweeter/mids run off the same wire so you would have to run the amp wiring to them behind the deck.
Are you changing the factory speakers?
You have a lot of options.
I’m jealous you 19’s got CarPlay.
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Old 02-16-2020, 10:18 PM   #4
IWrxAlot
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Quote:
Originally Posted by Subydude81 View Post
Iíve ran multiple set ups in my 18Ē STI I can tell you get a active line out converter first. Your gonna want more bass because the rear speakers do not play a full range signal. Audiocontrol LC7i is a good choice. You can find them used for like $100 and will give you 3 sets of RCA outputs.

The remote sense on your amp will work.
The front tweeter/mids run off the same wire so you would have to run the amp wiring to them behind the deck.
Are you changing the factory speakers?
You have a lot of options.
Iím jealous you 19ís got CarPlay.



Just thought Iíd give a little update, I installed the kicker key and ran the auto eq that it has built in.... it sounds freaking amazing compared to stock. And Iím not exaggerating. Iím really impressed with what this little amp did to my stock system. Iím still not sure what all the features do exactly, but I read that it has dsp built in which apparently is very good. It also amplifies the front and rears on 2 separate channels, meaning I can adjust the gain to the rear speakers so that you can actually hear them. It has 60, 80, and 120hz High pass filters which basically limit the amount of bass going to the speakers. I have that turned off and it sounds really good. It has auto compression so you donít blow your stock speakers. Though I have that turned off as well. It has Kicker eq which you can toggle on or off. It has auto time correction which you can toggle on or off. Itís definitely not Hk quality audio yet but I feel that once I upgrade all the door speakers it will be. I have the gain turned all the way down and they can barely handle it lol. All in all Iím extremely pleased with my purchase.

I did have one question for you though, even with the gain turned up a little for the rear speakers they still sound really muffled compared to the front. The bass is there now but the vocals sound very bad. Is this what you were referring to when you said they donít play full range audio ? My amp doesnít correct that ? I was thinking maybe itís just the crappy stock rear speakers causing this, but I donít wanna replace them if that lc7i will make them sound like the front.
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Old 02-17-2020, 08:09 AM   #5
Subydude81
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Could be the actual speakers just aren’t good. I never amped the stock speakers. The kicker key does not correct the signal coming from the headunit. I wish I had the tools to see what the actual speaker signals from the headunit look like.
I think once you replace the speakers you will be a lot happier.
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Old 02-20-2020, 08:26 AM   #6
Fishreeler
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To configure the system with a processor, you need to remove the crossover just. Connect the front, tweeters and mid-channels to the amplifier with a processor channel-by-channel and separately set the delays to mid and tweeters + adjust the cutoff frequencies.
In the option to buy crosses and tweeters, this will definitely not work. Mids with tweeters will not be tuned.
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